diff --git a/examples/osd/arduino-htu21/Adafruit_HTU21DF.cpp b/examples/osd/arduino-htu21/Adafruit_HTU21DF.cpp new file mode 100644 index 000000000..84bbeb066 --- /dev/null +++ b/examples/osd/arduino-htu21/Adafruit_HTU21DF.cpp @@ -0,0 +1,100 @@ +/*************************************************** + This is a library for the HTU21DF Humidity & Temp Sensor + + Designed specifically to work with the HTU21DF sensor from Adafruit + ----> https://www.adafruit.com/products/1899 + + These displays use I2C to communicate, 2 pins are required to + interface + Adafruit invests time and resources providing this open source code, + please support Adafruit and open-source hardware by purchasing + products from Adafruit! + + Written by Limor Fried/Ladyada for Adafruit Industries. + BSD license, all text above must be included in any redistribution + ****************************************************/ + +#include "Adafruit_HTU21DF.h" +#if defined(__AVR__) +#include +#endif + +Adafruit_HTU21DF::Adafruit_HTU21DF() { +} + + +boolean Adafruit_HTU21DF::begin(void) { + Wire.begin(); + + reset(); + + Wire.beginTransmission(HTU21DF_I2CADDR); + Wire.write(HTU21DF_READREG); + Wire.endTransmission(); + Wire.requestFrom(HTU21DF_I2CADDR, 1); + return (Wire.read() == 0x2); // after reset should be 0x2 +} + +void Adafruit_HTU21DF::reset(void) { + Wire.beginTransmission(HTU21DF_I2CADDR); + Wire.write(HTU21DF_RESET); + Wire.endTransmission(); + delay(15); +} + + +float Adafruit_HTU21DF::readTemperature(void) { + + // OK lets ready! + Wire.beginTransmission(HTU21DF_I2CADDR); + Wire.write(HTU21DF_READTEMP); + Wire.endTransmission(); + + delay(50); // add delay between request and actual read! + + Wire.requestFrom(HTU21DF_I2CADDR, 3); + while (!Wire.available()) {} + + uint16_t t = Wire.read(); + t <<= 8; + t |= Wire.read(); + + uint8_t crc = Wire.read(); + + float temp = t; + temp *= 175.72; + temp /= 65536; + temp -= 46.85; + + return temp; +} + + +float Adafruit_HTU21DF::readHumidity(void) { + // OK lets ready! + Wire.beginTransmission(HTU21DF_I2CADDR); + Wire.write(HTU21DF_READHUM); + Wire.endTransmission(); + + delay(50); // add delay between request and actual read! + + Wire.requestFrom(HTU21DF_I2CADDR, 3); + while (!Wire.available()) {} + + uint16_t h = Wire.read(); + h <<= 8; + h |= Wire.read(); + + uint8_t crc = Wire.read(); + + float hum = h; + hum *= 125; + hum /= 65536; + hum -= 6; + + return hum; +} + + + +/*********************************************************************/ diff --git a/examples/osd/arduino-htu21/Adafruit_HTU21DF.h b/examples/osd/arduino-htu21/Adafruit_HTU21DF.h new file mode 100644 index 000000000..fe8870e39 --- /dev/null +++ b/examples/osd/arduino-htu21/Adafruit_HTU21DF.h @@ -0,0 +1,44 @@ +/*************************************************** + This is a library for the HTU21D-F Humidity & Temp Sensor + + Designed specifically to work with the HTU21D-F sensor from Adafruit + ----> https://www.adafruit.com/products/1899 + + These displays use I2C to communicate, 2 pins are required to + interface + Adafruit invests time and resources providing this open source code, + please support Adafruit and open-source hardware by purchasing + products from Adafruit! + + Written by Limor Fried/Ladyada for Adafruit Industries. + BSD license, all text above must be included in any redistribution + ****************************************************/ + +//#if (ARDUINO >= 100) + #include "Arduino.h" +//#else +// #include "WProgram.h" +//#endif +#include "Wire.h" + +#define HTU21DF_I2CADDR 0x40 +#define HTU21DF_READTEMP 0xE3 +#define HTU21DF_READHUM 0xE5 +#define HTU21DF_WRITEREG 0xE6 +#define HTU21DF_READREG 0xE7 +#define HTU21DF_RESET 0xFE + + + +class Adafruit_HTU21DF { + public: + Adafruit_HTU21DF(); + boolean begin(void); + float readTemperature(void); + float readHumidity(void); + void reset(void); + private: + boolean readData(void); + float humidity, temp; +}; + diff --git a/examples/osd/arduino-htu21/Adafruit_HTU21DF_Library-master/Adafruit_HTU21DF.cpp b/examples/osd/arduino-htu21/Adafruit_HTU21DF_Library-master/Adafruit_HTU21DF.cpp new file mode 100644 index 000000000..84bbeb066 --- /dev/null +++ b/examples/osd/arduino-htu21/Adafruit_HTU21DF_Library-master/Adafruit_HTU21DF.cpp @@ -0,0 +1,100 @@ +/*************************************************** + This is a library for the HTU21DF Humidity & Temp Sensor + + Designed specifically to work with the HTU21DF sensor from Adafruit + ----> https://www.adafruit.com/products/1899 + + These displays use I2C to communicate, 2 pins are required to + interface + Adafruit invests time and resources providing this open source code, + please support Adafruit and open-source hardware by purchasing + products from Adafruit! + + Written by Limor Fried/Ladyada for Adafruit Industries. + BSD license, all text above must be included in any redistribution + ****************************************************/ + +#include "Adafruit_HTU21DF.h" +#if defined(__AVR__) +#include +#endif + +Adafruit_HTU21DF::Adafruit_HTU21DF() { +} + + +boolean Adafruit_HTU21DF::begin(void) { + Wire.begin(); + + reset(); + + Wire.beginTransmission(HTU21DF_I2CADDR); + Wire.write(HTU21DF_READREG); + Wire.endTransmission(); + Wire.requestFrom(HTU21DF_I2CADDR, 1); + return (Wire.read() == 0x2); // after reset should be 0x2 +} + +void Adafruit_HTU21DF::reset(void) { + Wire.beginTransmission(HTU21DF_I2CADDR); + Wire.write(HTU21DF_RESET); + Wire.endTransmission(); + delay(15); +} + + +float Adafruit_HTU21DF::readTemperature(void) { + + // OK lets ready! + Wire.beginTransmission(HTU21DF_I2CADDR); + Wire.write(HTU21DF_READTEMP); + Wire.endTransmission(); + + delay(50); // add delay between request and actual read! + + Wire.requestFrom(HTU21DF_I2CADDR, 3); + while (!Wire.available()) {} + + uint16_t t = Wire.read(); + t <<= 8; + t |= Wire.read(); + + uint8_t crc = Wire.read(); + + float temp = t; + temp *= 175.72; + temp /= 65536; + temp -= 46.85; + + return temp; +} + + +float Adafruit_HTU21DF::readHumidity(void) { + // OK lets ready! + Wire.beginTransmission(HTU21DF_I2CADDR); + Wire.write(HTU21DF_READHUM); + Wire.endTransmission(); + + delay(50); // add delay between request and actual read! + + Wire.requestFrom(HTU21DF_I2CADDR, 3); + while (!Wire.available()) {} + + uint16_t h = Wire.read(); + h <<= 8; + h |= Wire.read(); + + uint8_t crc = Wire.read(); + + float hum = h; + hum *= 125; + hum /= 65536; + hum -= 6; + + return hum; +} + + + +/*********************************************************************/ diff --git a/examples/osd/arduino-htu21/Adafruit_HTU21DF_Library-master/Adafruit_HTU21DF.h b/examples/osd/arduino-htu21/Adafruit_HTU21DF_Library-master/Adafruit_HTU21DF.h new file mode 100644 index 000000000..b80698cb8 --- /dev/null +++ b/examples/osd/arduino-htu21/Adafruit_HTU21DF_Library-master/Adafruit_HTU21DF.h @@ -0,0 +1,44 @@ +/*************************************************** + This is a library for the HTU21D-F Humidity & Temp Sensor + + Designed specifically to work with the HTU21D-F sensor from Adafruit + ----> https://www.adafruit.com/products/1899 + + These displays use I2C to communicate, 2 pins are required to + interface + Adafruit invests time and resources providing this open source code, + please support Adafruit and open-source hardware by purchasing + products from Adafruit! + + Written by Limor Fried/Ladyada for Adafruit Industries. + BSD license, all text above must be included in any redistribution + ****************************************************/ + +#if (ARDUINO >= 100) + #include "Arduino.h" +#else + #include "WProgram.h" +#endif +#include "Wire.h" + +#define HTU21DF_I2CADDR 0x40 +#define HTU21DF_READTEMP 0xE3 +#define HTU21DF_READHUM 0xE5 +#define HTU21DF_WRITEREG 0xE6 +#define HTU21DF_READREG 0xE7 +#define HTU21DF_RESET 0xFE + + + +class Adafruit_HTU21DF { + public: + Adafruit_HTU21DF(); + boolean begin(void); + float readTemperature(void); + float readHumidity(void); + void reset(void); + private: + boolean readData(void); + float humidity, temp; +}; + diff --git a/examples/osd/arduino-htu21/Adafruit_HTU21DF_Library-master/README.txt b/examples/osd/arduino-htu21/Adafruit_HTU21DF_Library-master/README.txt new file mode 100644 index 000000000..5d41f6d26 --- /dev/null +++ b/examples/osd/arduino-htu21/Adafruit_HTU21DF_Library-master/README.txt @@ -0,0 +1,24 @@ +This is a library for the HTU21D-F Humidity + Temp sensor + +Designed specifically to work with the HTU21D-F in the Adafruit shop + ----> https://www.adafruit.com/products/1899 + +These displays use I2C to communicate, 2 pins are required to interface +Adafruit invests time and resources providing this open source code, +please support Adafruit and open-source hardware by purchasing +products from Adafruit! + +Written by Limor Fried/Ladyada for Adafruit Industries. +BSD license, all text above must be included in any redistribution + +Check out the links above for our tutorials and wiring diagrams + +To download. click the ZIP button in the top-middle navbar, +rename the uncompressed folder Adafruit_HTU21DF. +Check that the Adafruit_HTU21DF folder contains Adafruit_HTU21DF.cpp and Adafruit_HTU21DF.h + +Place the Adafruit_HTU21DF library folder your arduinosketchfolder/libraries/ folder. +You may need to create the libraries subfolder if its your first library. Restart the IDE. + +We also have a great tutorial on Arduino library installation at: +http://learn.adafruit.com/adafruit-all-about-arduino-libraries-install-use \ No newline at end of file diff --git a/examples/osd/arduino-htu21/Adafruit_HTU21DF_Library-master/examples/HTU21DFtest/HTU21DFtest.ino b/examples/osd/arduino-htu21/Adafruit_HTU21DF_Library-master/examples/HTU21DFtest/HTU21DFtest.ino new file mode 100644 index 000000000..543a1fe5e --- /dev/null +++ b/examples/osd/arduino-htu21/Adafruit_HTU21DF_Library-master/examples/HTU21DFtest/HTU21DFtest.ino @@ -0,0 +1,36 @@ +/*************************************************** + This is an example for the HTU21D-F Humidity & Temp Sensor + + Designed specifically to work with the HTU21D-F sensor from Adafruit + ----> https://www.adafruit.com/products/1899 + + These displays use I2C to communicate, 2 pins are required to + interface + ****************************************************/ + +#include +#include "Adafruit_HTU21DF.h" + +// Connect Vin to 3-5VDC +// Connect GND to ground +// Connect SCL to I2C clock pin (A5 on UNO) +// Connect SDA to I2C data pin (A4 on UNO) + +Adafruit_HTU21DF htu = Adafruit_HTU21DF(); + +void setup() { + Serial.begin(9600); + Serial.println("HTU21D-F test"); + + if (!htu.begin()) { + Serial.println("Couldn't find sensor!"); + while (1); + } +} + + +void loop() { + Serial.print("Temp: "); Serial.print(htu.readTemperature()); + Serial.print("\t\tHum: "); Serial.println(htu.readHumidity()); + delay(500); +} \ No newline at end of file diff --git a/examples/osd/arduino-htu21/Adafruit_HTU21DF_Library-master/library.properties b/examples/osd/arduino-htu21/Adafruit_HTU21DF_Library-master/library.properties new file mode 100644 index 000000000..a8c8478ae --- /dev/null +++ b/examples/osd/arduino-htu21/Adafruit_HTU21DF_Library-master/library.properties @@ -0,0 +1,9 @@ +name=Adafruit HTU21DF Library +version=1.0.0 +author=Adafruit +maintainer=Adafruit +sentence=Arduino library for the HTU21D-F sensors in the Adafruit shop +paragraph=Arduino library for the HTU21D-F sensors in the Adafruit shop +category=Sensors +url=https://github.com/adafruit/Adafruit_HTU21DF_Library +architectures=* diff --git a/examples/osd/arduino-htu21/Makefile b/examples/osd/arduino-htu21/Makefile new file mode 100644 index 000000000..f9e458898 --- /dev/null +++ b/examples/osd/arduino-htu21/Makefile @@ -0,0 +1,87 @@ +# Set this to the name of your sketch (without extension .pde) +SKETCH=sketch + +ifeq ($(TARGET), osd-merkur) +PLATFORM_FILES= avr-size arduino-example.osd-merkur.hex \ + arduino-example.osd-merkur.eep +endif + +all: arduino-example $(PLATFORM_FILES) + +CONTIKI=../../.. + +# Contiki IPv6 configuration +CONTIKI_WITH_IPV6 = 1 + +CFLAGS += -DPROJECT_CONF_H=\"project-conf.h\" +LFLAGS += -lm + +PROJECT_SOURCEFILES += ${SKETCH}.cpp Adafruit_HTU21DF.cpp Wire.cpp twi.c new.cpp WString.cpp Stream.cpp + +# automatically build RESTful resources +REST_RESOURCES_DIR = ./resources +REST_RESOURCES_DIR_COMMON = ../resources-common +REST_RESOURCES_FILES= $(notdir \ + $(shell find $(REST_RESOURCES_DIR) -name '*.c') \ + $(shell find $(REST_RESOURCES_DIR_COMMON) -name '*.c') \ + ) + +PROJECTDIRS += $(REST_RESOURCES_DIR) $(REST_RESOURCES_DIR_COMMON) +PROJECT_SOURCEFILES += $(REST_RESOURCES_FILES) + +# variable for Makefile.include +ifneq ($(TARGET), minimal-net) +CFLAGS += -DUIP_CONF_IPV6_RPL=1 +else +# minimal-net does not support RPL under Linux and is mostly used to test CoAP only +${info INFO: compiling without RPL} +CFLAGS += -DUIP_CONF_IPV6_RPL=0 +CFLAGS += -DHARD_CODED_ADDRESS=\"fdfd::10\" +${info INFO: compiling with large buffers} +CFLAGS += -DUIP_CONF_BUFFER_SIZE=2048 +CFLAGS += -DREST_MAX_CHUNK_SIZE=1024 +CFLAGS += -DCOAP_MAX_HEADER_SIZE=640 +endif + +# linker optimizations +SMALL=1 + + +# REST Engine shall use Erbium CoAP implementation +APPS += er-coap +APPS += rest-engine +APPS += arduino + +include $(CONTIKI)/Makefile.include +include $(CONTIKI)/apps/arduino/Makefile.include + +avr-size: arduino-example.osd-merkur + avr-size -C --mcu=MCU=atmega128rfa1 arduino-example.osd-merkur + +arduino-example.osd-merkur.hex: arduino-example.osd-merkur + avr-objcopy -j .text -j .data -O ihex arduino-example.osd-merkur \ + arduino-example.osd-merkur.hex + +arduino-example.osd-merkur.eep: arduino-example.osd-merkur + avr-objcopy -j .eeprom --set-section-flags=.eeprom="alloc,load" \ + --change-section-lma .eeprom=0 -O ihex \ + arduino-example.osd-merkur arduino-example.osd-merkur.eep + +flash: arduino-example.osd-merkur.hex arduino-example.osd-merkur.eep + avrdude -pm128rfa1 -c arduino -P/dev/ttyUSB0 -b57600 -e -U \ + flash:w:arduino-example.osd-merkur.hex:a -U \ + eeprom:w:arduino-example.osd-merkur.eep:a + +.PHONY: flash avr-size + +$(CONTIKI)/tools/tunslip6: $(CONTIKI)/tools/tunslip6.c + (cd $(CONTIKI)/tools && $(MAKE) tunslip6) + +connect-router: $(CONTIKI)/tools/tunslip6 + sudo $(CONTIKI)/tools/tunslip6 aaaa::1/64 + +connect-router-cooja: $(CONTIKI)/tools/tunslip6 + sudo $(CONTIKI)/tools/tunslip6 -a 127.0.0.1 aaaa::1/64 + +connect-minimal: + sudo ip address add fdfd::1/64 dev tap0 diff --git a/examples/osd/arduino-htu21/Print.h b/examples/osd/arduino-htu21/Print.h new file mode 100644 index 000000000..dc7615087 --- /dev/null +++ b/examples/osd/arduino-htu21/Print.h @@ -0,0 +1,81 @@ +/* + Print.h - Base class that provides print() and println() + Copyright (c) 2008 David A. Mellis. All right reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +*/ + +#ifndef Print_h +#define Print_h + +#include +#include // for size_t + +#include "WString.h" +#include "Printable.h" + +#define DEC 10 +#define HEX 16 +#define OCT 8 +#define BIN 2 + +class Print +{ + private: + int write_error; + size_t printNumber(unsigned long, uint8_t); + size_t printFloat(double, uint8_t); + protected: + void setWriteError(int err = 1) { write_error = err; } + public: + Print() : write_error(0) {} + + int getWriteError() { return write_error; } + void clearWriteError() { setWriteError(0); } + + virtual size_t write(uint8_t) = 0; + size_t write(const char *str) { + if (str == NULL) return 0; + return write((const uint8_t *)str, strlen(str)); + } + virtual size_t write(const uint8_t *buffer, size_t size); + + size_t print(const __FlashStringHelper *); + size_t print(const String &); + size_t print(const char[]); + size_t print(char); + size_t print(unsigned char, int = DEC); + size_t print(int, int = DEC); + size_t print(unsigned int, int = DEC); + size_t print(long, int = DEC); + size_t print(unsigned long, int = DEC); + size_t print(double, int = 2); + size_t print(const Printable&); + + size_t println(const __FlashStringHelper *); + size_t println(const String &s); + size_t println(const char[]); + size_t println(char); + size_t println(unsigned char, int = DEC); + size_t println(int, int = DEC); + size_t println(unsigned int, int = DEC); + size_t println(long, int = DEC); + size_t println(unsigned long, int = DEC); + size_t println(double, int = 2); + size_t println(const Printable&); + size_t println(void); +}; + +#endif diff --git a/examples/osd/arduino-htu21/Printable.h b/examples/osd/arduino-htu21/Printable.h new file mode 100644 index 000000000..d03c9af62 --- /dev/null +++ b/examples/osd/arduino-htu21/Printable.h @@ -0,0 +1,40 @@ +/* + Printable.h - Interface class that allows printing of complex types + Copyright (c) 2011 Adrian McEwen. All right reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +*/ + +#ifndef Printable_h +#define Printable_h + +#include + +class Print; + +/** The Printable class provides a way for new classes to allow themselves to be printed. + By deriving from Printable and implementing the printTo method, it will then be possible + for users to print out instances of this class by passing them into the usual + Print::print and Print::println methods. +*/ + +class Printable +{ + public: + virtual size_t printTo(Print& p) const = 0; +}; + +#endif + diff --git a/examples/osd/arduino-htu21/README.md b/examples/osd/arduino-htu21/README.md new file mode 100644 index 000000000..e1490ed05 --- /dev/null +++ b/examples/osd/arduino-htu21/README.md @@ -0,0 +1,11 @@ +Arduino compatibility example +============================= + +This example shows that it is now possible to re-use arduino sketches in +Contiki. This example documents the necessary magic. Arduino specifies +two routines, `setup` and `loop`. Before `setup` is called, the +framework initializes hardware. In original Arduino, all this is done in +a `main` function (in C). For contiki we define a process that does the +same. + +See the documentation file in apps/contiki-compat/README.md diff --git a/examples/osd/arduino-htu21/Stream.cpp b/examples/osd/arduino-htu21/Stream.cpp new file mode 100644 index 000000000..aafb7fcf9 --- /dev/null +++ b/examples/osd/arduino-htu21/Stream.cpp @@ -0,0 +1,270 @@ +/* + Stream.cpp - adds parsing methods to Stream class + Copyright (c) 2008 David A. Mellis. All right reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Created July 2011 + parsing functions based on TextFinder library by Michael Margolis + */ + +#include "Arduino.h" +#include "Stream.h" + +#define PARSE_TIMEOUT 1000 // default number of milli-seconds to wait +#define NO_SKIP_CHAR 1 // a magic char not found in a valid ASCII numeric field + +// private method to read stream with timeout +int Stream::timedRead() +{ + int c; + _startMillis = millis(); + do { + c = read(); + if (c >= 0) return c; + } while(millis() - _startMillis < _timeout); + return -1; // -1 indicates timeout +} + +// private method to peek stream with timeout +int Stream::timedPeek() +{ + int c; + _startMillis = millis(); + do { + c = peek(); + if (c >= 0) return c; + } while(millis() - _startMillis < _timeout); + return -1; // -1 indicates timeout +} + +// returns peek of the next digit in the stream or -1 if timeout +// discards non-numeric characters +int Stream::peekNextDigit() +{ + int c; + while (1) { + c = timedPeek(); + if (c < 0) return c; // timeout + if (c == '-') return c; + if (c >= '0' && c <= '9') return c; + read(); // discard non-numeric + } +} + +// Public Methods +////////////////////////////////////////////////////////////// + +void Stream::setTimeout(unsigned long timeout) // sets the maximum number of milliseconds to wait +{ + _timeout = timeout; +} + + // find returns true if the target string is found +bool Stream::find(char *target) +{ + return findUntil(target, NULL); +} + +// reads data from the stream until the target string of given length is found +// returns true if target string is found, false if timed out +bool Stream::find(char *target, size_t length) +{ + return findUntil(target, length, NULL, 0); +} + +// as find but search ends if the terminator string is found +bool Stream::findUntil(char *target, char *terminator) +{ + return findUntil(target, strlen(target), terminator, strlen(terminator)); +} + +// reads data from the stream until the target string of the given length is found +// search terminated if the terminator string is found +// returns true if target string is found, false if terminated or timed out +bool Stream::findUntil(char *target, size_t targetLen, char *terminator, size_t termLen) +{ + size_t index = 0; // maximum target string length is 64k bytes! + size_t termIndex = 0; + int c; + + if( *target == 0) + return true; // return true if target is a null string + while( (c = timedRead()) > 0){ + + if(c != target[index]) + index = 0; // reset index if any char does not match + + if( c == target[index]){ + //////Serial.print("found "); Serial.write(c); Serial.print("index now"); Serial.println(index+1); + if(++index >= targetLen){ // return true if all chars in the target match + return true; + } + } + + if(termLen > 0 && c == terminator[termIndex]){ + if(++termIndex >= termLen) + return false; // return false if terminate string found before target string + } + else + termIndex = 0; + } + return false; +} + + +// returns the first valid (long) integer value from the current position. +// initial characters that are not digits (or the minus sign) are skipped +// function is terminated by the first character that is not a digit. +long Stream::parseInt() +{ + return parseInt(NO_SKIP_CHAR); // terminate on first non-digit character (or timeout) +} + +// as above but a given skipChar is ignored +// this allows format characters (typically commas) in values to be ignored +long Stream::parseInt(char skipChar) +{ + boolean isNegative = false; + long value = 0; + int c; + + c = peekNextDigit(); + // ignore non numeric leading characters + if(c < 0) + return 0; // zero returned if timeout + + do{ + if(c == skipChar) + ; // ignore this charactor + else if(c == '-') + isNegative = true; + else if(c >= '0' && c <= '9') // is c a digit? + value = value * 10 + c - '0'; + read(); // consume the character we got with peek + c = timedPeek(); + } + while( (c >= '0' && c <= '9') || c == skipChar ); + + if(isNegative) + value = -value; + return value; +} + + +// as parseInt but returns a floating point value +float Stream::parseFloat() +{ + return parseFloat(NO_SKIP_CHAR); +} + +// as above but the given skipChar is ignored +// this allows format characters (typically commas) in values to be ignored +float Stream::parseFloat(char skipChar){ + boolean isNegative = false; + boolean isFraction = false; + long value = 0; + char c; + float fraction = 1.0; + + c = peekNextDigit(); + // ignore non numeric leading characters + if(c < 0) + return 0; // zero returned if timeout + + do{ + if(c == skipChar) + ; // ignore + else if(c == '-') + isNegative = true; + else if (c == '.') + isFraction = true; + else if(c >= '0' && c <= '9') { // is c a digit? + value = value * 10 + c - '0'; + if(isFraction) + fraction *= 0.1; + } + read(); // consume the character we got with peek + c = timedPeek(); + } + while( (c >= '0' && c <= '9') || c == '.' || c == skipChar ); + + if(isNegative) + value = -value; + if(isFraction) + return value * fraction; + else + return value; +} + +// read characters from stream into buffer +// terminates if length characters have been read, or timeout (see setTimeout) +// returns the number of characters placed in the buffer +// the buffer is NOT null terminated. +// +size_t Stream::readBytes(char *buffer, size_t length) +{ + size_t count = 0; + while (count < length) { + int c = timedRead(); + if (c < 0) break; + *buffer++ = (char)c; + count++; + } + return count; +} + + +// as readBytes with terminator character +// terminates if length characters have been read, timeout, or if the terminator character detected +// returns the number of characters placed in the buffer (0 means no valid data found) + +size_t Stream::readBytesUntil(char terminator, char *buffer, size_t length) +{ + if (length < 1) return 0; + size_t index = 0; + while (index < length) { + int c = timedRead(); + if (c < 0 || c == terminator) break; + *buffer++ = (char)c; + index++; + } + return index; // return number of characters, not including null terminator +} + +String Stream::readString() +{ + String ret; + int c = timedRead(); + while (c >= 0) + { + ret += (char)c; + c = timedRead(); + } + return ret; +} + +String Stream::readStringUntil(char terminator) +{ + String ret; + int c = timedRead(); + while (c >= 0 && c != terminator) + { + ret += (char)c; + c = timedRead(); + } + return ret; +} + diff --git a/examples/osd/arduino-htu21/Stream.h b/examples/osd/arduino-htu21/Stream.h new file mode 100644 index 000000000..58bbf752f --- /dev/null +++ b/examples/osd/arduino-htu21/Stream.h @@ -0,0 +1,96 @@ +/* + Stream.h - base class for character-based streams. + Copyright (c) 2010 David A. Mellis. All right reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + parsing functions based on TextFinder library by Michael Margolis +*/ + +#ifndef Stream_h +#define Stream_h + +#include +#include "Print.h" + +// compatability macros for testing +/* +#define getInt() parseInt() +#define getInt(skipChar) parseInt(skipchar) +#define getFloat() parseFloat() +#define getFloat(skipChar) parseFloat(skipChar) +#define getString( pre_string, post_string, buffer, length) +readBytesBetween( pre_string, terminator, buffer, length) +*/ + +class Stream : public Print +{ + private: + unsigned long _timeout; // number of milliseconds to wait for the next char before aborting timed read + unsigned long _startMillis; // used for timeout measurement + int timedRead(); // private method to read stream with timeout + int timedPeek(); // private method to peek stream with timeout + int peekNextDigit(); // returns the next numeric digit in the stream or -1 if timeout + + public: + virtual int available() = 0; + virtual int read() = 0; + virtual int peek() = 0; + virtual void flush() = 0; + + Stream() {_timeout=1000;} + +// parsing methods + + void setTimeout(unsigned long timeout); // sets maximum milliseconds to wait for stream data, default is 1 second + + bool find(char *target); // reads data from the stream until the target string is found + // returns true if target string is found, false if timed out (see setTimeout) + + bool find(char *target, size_t length); // reads data from the stream until the target string of given length is found + // returns true if target string is found, false if timed out + + bool findUntil(char *target, char *terminator); // as find but search ends if the terminator string is found + + bool findUntil(char *target, size_t targetLen, char *terminate, size_t termLen); // as above but search ends if the terminate string is found + + + long parseInt(); // returns the first valid (long) integer value from the current position. + // initial characters that are not digits (or the minus sign) are skipped + // integer is terminated by the first character that is not a digit. + + float parseFloat(); // float version of parseInt + + size_t readBytes( char *buffer, size_t length); // read chars from stream into buffer + // terminates if length characters have been read or timeout (see setTimeout) + // returns the number of characters placed in the buffer (0 means no valid data found) + + size_t readBytesUntil( char terminator, char *buffer, size_t length); // as readBytes with terminator character + // terminates if length characters have been read, timeout, or if the terminator character detected + // returns the number of characters placed in the buffer (0 means no valid data found) + + // Arduino String functions to be added here + String readString(); + String readStringUntil(char terminator); + + protected: + long parseInt(char skipChar); // as above but the given skipChar is ignored + // as above but the given skipChar is ignored + // this allows format characters (typically commas) in values to be ignored + + float parseFloat(char skipChar); // as above but the given skipChar is ignored +}; + +#endif diff --git a/examples/osd/arduino-htu21/WString.cpp b/examples/osd/arduino-htu21/WString.cpp new file mode 100644 index 000000000..c6839fc0d --- /dev/null +++ b/examples/osd/arduino-htu21/WString.cpp @@ -0,0 +1,645 @@ +/* + WString.cpp - String library for Wiring & Arduino + ...mostly rewritten by Paul Stoffregen... + Copyright (c) 2009-10 Hernando Barragan. All rights reserved. + Copyright 2011, Paul Stoffregen, paul@pjrc.com + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +*/ + +#include "WString.h" + + +/*********************************************/ +/* Constructors */ +/*********************************************/ + +String::String(const char *cstr) +{ + init(); + if (cstr) copy(cstr, strlen(cstr)); +} + +String::String(const String &value) +{ + init(); + *this = value; +} + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ +String::String(String &&rval) +{ + init(); + move(rval); +} +String::String(StringSumHelper &&rval) +{ + init(); + move(rval); +} +#endif + +String::String(char c) +{ + init(); + char buf[2]; + buf[0] = c; + buf[1] = 0; + *this = buf; +} + +String::String(unsigned char value, unsigned char base) +{ + init(); + char buf[9]; + utoa(value, buf, base); + *this = buf; +} + +String::String(int value, unsigned char base) +{ + init(); + char buf[18]; + itoa(value, buf, base); + *this = buf; +} + +String::String(unsigned int value, unsigned char base) +{ + init(); + char buf[17]; + utoa(value, buf, base); + *this = buf; +} + +String::String(long value, unsigned char base) +{ + init(); + char buf[34]; + ltoa(value, buf, base); + *this = buf; +} + +String::String(unsigned long value, unsigned char base) +{ + init(); + char buf[33]; + ultoa(value, buf, base); + *this = buf; +} + +String::~String() +{ + free(buffer); +} + +/*********************************************/ +/* Memory Management */ +/*********************************************/ + +inline void String::init(void) +{ + buffer = NULL; + capacity = 0; + len = 0; + flags = 0; +} + +void String::invalidate(void) +{ + if (buffer) free(buffer); + buffer = NULL; + capacity = len = 0; +} + +unsigned char String::reserve(unsigned int size) +{ + if (buffer && capacity >= size) return 1; + if (changeBuffer(size)) { + if (len == 0) buffer[0] = 0; + return 1; + } + return 0; +} + +unsigned char String::changeBuffer(unsigned int maxStrLen) +{ + char *newbuffer = (char *)realloc(buffer, maxStrLen + 1); + if (newbuffer) { + buffer = newbuffer; + capacity = maxStrLen; + return 1; + } + return 0; +} + +/*********************************************/ +/* Copy and Move */ +/*********************************************/ + +String & String::copy(const char *cstr, unsigned int length) +{ + if (!reserve(length)) { + invalidate(); + return *this; + } + len = length; + strcpy(buffer, cstr); + return *this; +} + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ +void String::move(String &rhs) +{ + if (buffer) { + if (capacity >= rhs.len) { + strcpy(buffer, rhs.buffer); + len = rhs.len; + rhs.len = 0; + return; + } else { + free(buffer); + } + } + buffer = rhs.buffer; + capacity = rhs.capacity; + len = rhs.len; + rhs.buffer = NULL; + rhs.capacity = 0; + rhs.len = 0; +} +#endif + +String & String::operator = (const String &rhs) +{ + if (this == &rhs) return *this; + + if (rhs.buffer) copy(rhs.buffer, rhs.len); + else invalidate(); + + return *this; +} + +#ifdef __GXX_EXPERIMENTAL_CXX0X__ +String & String::operator = (String &&rval) +{ + if (this != &rval) move(rval); + return *this; +} + +String & String::operator = (StringSumHelper &&rval) +{ + if (this != &rval) move(rval); + return *this; +} +#endif + +String & String::operator = (const char *cstr) +{ + if (cstr) copy(cstr, strlen(cstr)); + else invalidate(); + + return *this; +} + +/*********************************************/ +/* concat */ +/*********************************************/ + +unsigned char String::concat(const String &s) +{ + return concat(s.buffer, s.len); +} + +unsigned char String::concat(const char *cstr, unsigned int length) +{ + unsigned int newlen = len + length; + if (!cstr) return 0; + if (length == 0) return 1; + if (!reserve(newlen)) return 0; + strcpy(buffer + len, cstr); + len = newlen; + return 1; +} + +unsigned char String::concat(const char *cstr) +{ + if (!cstr) return 0; + return concat(cstr, strlen(cstr)); +} + +unsigned char String::concat(char c) +{ + char buf[2]; + buf[0] = c; + buf[1] = 0; + return concat(buf, 1); +} + +unsigned char String::concat(unsigned char num) +{ + char buf[4]; + itoa(num, buf, 10); + return concat(buf, strlen(buf)); +} + +unsigned char String::concat(int num) +{ + char buf[7]; + itoa(num, buf, 10); + return concat(buf, strlen(buf)); +} + +unsigned char String::concat(unsigned int num) +{ + char buf[6]; + utoa(num, buf, 10); + return concat(buf, strlen(buf)); +} + +unsigned char String::concat(long num) +{ + char buf[12]; + ltoa(num, buf, 10); + return concat(buf, strlen(buf)); +} + +unsigned char String::concat(unsigned long num) +{ + char buf[11]; + ultoa(num, buf, 10); + return concat(buf, strlen(buf)); +} + +/*********************************************/ +/* Concatenate */ +/*********************************************/ + +StringSumHelper & operator + (const StringSumHelper &lhs, const String &rhs) +{ + StringSumHelper &a = const_cast(lhs); + if (!a.concat(rhs.buffer, rhs.len)) a.invalidate(); + return a; +} + +StringSumHelper & operator + (const StringSumHelper &lhs, const char *cstr) +{ + StringSumHelper &a = const_cast(lhs); + if (!cstr || !a.concat(cstr, strlen(cstr))) a.invalidate(); + return a; +} + +StringSumHelper & operator + (const StringSumHelper &lhs, char c) +{ + StringSumHelper &a = const_cast(lhs); + if (!a.concat(c)) a.invalidate(); + return a; +} + +StringSumHelper & operator + (const StringSumHelper &lhs, unsigned char num) +{ + StringSumHelper &a = const_cast(lhs); + if (!a.concat(num)) a.invalidate(); + return a; +} + +StringSumHelper & operator + (const StringSumHelper &lhs, int num) +{ + StringSumHelper &a = const_cast(lhs); + if (!a.concat(num)) a.invalidate(); + return a; +} + +StringSumHelper & operator + (const StringSumHelper &lhs, unsigned int num) +{ + StringSumHelper &a = const_cast(lhs); + if (!a.concat(num)) a.invalidate(); + return a; +} + +StringSumHelper & operator + (const StringSumHelper &lhs, long num) +{ + StringSumHelper &a = const_cast(lhs); + if (!a.concat(num)) a.invalidate(); + return a; +} + +StringSumHelper & operator + (const StringSumHelper &lhs, unsigned long num) +{ + StringSumHelper &a = const_cast(lhs); + if (!a.concat(num)) a.invalidate(); + return a; +} + +/*********************************************/ +/* Comparison */ +/*********************************************/ + +int String::compareTo(const String &s) const +{ + if (!buffer || !s.buffer) { + if (s.buffer && s.len > 0) return 0 - *(unsigned char *)s.buffer; + if (buffer && len > 0) return *(unsigned char *)buffer; + return 0; + } + return strcmp(buffer, s.buffer); +} + +unsigned char String::equals(const String &s2) const +{ + return (len == s2.len && compareTo(s2) == 0); +} + +unsigned char String::equals(const char *cstr) const +{ + if (len == 0) return (cstr == NULL || *cstr == 0); + if (cstr == NULL) return buffer[0] == 0; + return strcmp(buffer, cstr) == 0; +} + +unsigned char String::operator<(const String &rhs) const +{ + return compareTo(rhs) < 0; +} + +unsigned char String::operator>(const String &rhs) const +{ + return compareTo(rhs) > 0; +} + +unsigned char String::operator<=(const String &rhs) const +{ + return compareTo(rhs) <= 0; +} + +unsigned char String::operator>=(const String &rhs) const +{ + return compareTo(rhs) >= 0; +} + +unsigned char String::equalsIgnoreCase( const String &s2 ) const +{ + if (this == &s2) return 1; + if (len != s2.len) return 0; + if (len == 0) return 1; + const char *p1 = buffer; + const char *p2 = s2.buffer; + while (*p1) { + if (tolower(*p1++) != tolower(*p2++)) return 0; + } + return 1; +} + +unsigned char String::startsWith( const String &s2 ) const +{ + if (len < s2.len) return 0; + return startsWith(s2, 0); +} + +unsigned char String::startsWith( const String &s2, unsigned int offset ) const +{ + if (offset > len - s2.len || !buffer || !s2.buffer) return 0; + return strncmp( &buffer[offset], s2.buffer, s2.len ) == 0; +} + +unsigned char String::endsWith( const String &s2 ) const +{ + if ( len < s2.len || !buffer || !s2.buffer) return 0; + return strcmp(&buffer[len - s2.len], s2.buffer) == 0; +} + +/*********************************************/ +/* Character Access */ +/*********************************************/ + +char String::charAt(unsigned int loc) const +{ + return operator[](loc); +} + +void String::setCharAt(unsigned int loc, char c) +{ + if (loc < len) buffer[loc] = c; +} + +char & String::operator[](unsigned int index) +{ + static char dummy_writable_char; + if (index >= len || !buffer) { + dummy_writable_char = 0; + return dummy_writable_char; + } + return buffer[index]; +} + +char String::operator[]( unsigned int index ) const +{ + if (index >= len || !buffer) return 0; + return buffer[index]; +} + +void String::getBytes(unsigned char *buf, unsigned int bufsize, unsigned int index) const +{ + if (!bufsize || !buf) return; + if (index >= len) { + buf[0] = 0; + return; + } + unsigned int n = bufsize - 1; + if (n > len - index) n = len - index; + strncpy((char *)buf, buffer + index, n); + buf[n] = 0; +} + +/*********************************************/ +/* Search */ +/*********************************************/ + +int String::indexOf(char c) const +{ + return indexOf(c, 0); +} + +int String::indexOf( char ch, unsigned int fromIndex ) const +{ + if (fromIndex >= len) return -1; + const char* temp = strchr(buffer + fromIndex, ch); + if (temp == NULL) return -1; + return temp - buffer; +} + +int String::indexOf(const String &s2) const +{ + return indexOf(s2, 0); +} + +int String::indexOf(const String &s2, unsigned int fromIndex) const +{ + if (fromIndex >= len) return -1; + const char *found = strstr(buffer + fromIndex, s2.buffer); + if (found == NULL) return -1; + return found - buffer; +} + +int String::lastIndexOf( char theChar ) const +{ + return lastIndexOf(theChar, len - 1); +} + +int String::lastIndexOf(char ch, unsigned int fromIndex) const +{ + if (fromIndex >= len) return -1; + char tempchar = buffer[fromIndex + 1]; + buffer[fromIndex + 1] = '\0'; + char* temp = strrchr( buffer, ch ); + buffer[fromIndex + 1] = tempchar; + if (temp == NULL) return -1; + return temp - buffer; +} + +int String::lastIndexOf(const String &s2) const +{ + return lastIndexOf(s2, len - s2.len); +} + +int String::lastIndexOf(const String &s2, unsigned int fromIndex) const +{ + if (s2.len == 0 || len == 0 || s2.len > len) return -1; + if (fromIndex >= len) fromIndex = len - 1; + int found = -1; + for (char *p = buffer; p <= buffer + fromIndex; p++) { + p = strstr(p, s2.buffer); + if (!p) break; + if ((unsigned int)(p - buffer) <= fromIndex) found = p - buffer; + } + return found; +} + +String String::substring( unsigned int left ) const +{ + return substring(left, len); +} + +String String::substring(unsigned int left, unsigned int right) const +{ + if (left > right) { + unsigned int temp = right; + right = left; + left = temp; + } + String out; + if (left > len) return out; + if (right > len) right = len; + char temp = buffer[right]; // save the replaced character + buffer[right] = '\0'; + out = buffer + left; // pointer arithmetic + buffer[right] = temp; //restore character + return out; +} + +/*********************************************/ +/* Modification */ +/*********************************************/ + +void String::replace(char find, char replace) +{ + if (!buffer) return; + for (char *p = buffer; *p; p++) { + if (*p == find) *p = replace; + } +} + +void String::replace(const String& find, const String& replace) +{ + if (len == 0 || find.len == 0) return; + int diff = replace.len - find.len; + char *readFrom = buffer; + char *foundAt; + if (diff == 0) { + while ((foundAt = strstr(readFrom, find.buffer)) != NULL) { + memcpy(foundAt, replace.buffer, replace.len); + readFrom = foundAt + replace.len; + } + } else if (diff < 0) { + char *writeTo = buffer; + while ((foundAt = strstr(readFrom, find.buffer)) != NULL) { + unsigned int n = foundAt - readFrom; + memcpy(writeTo, readFrom, n); + writeTo += n; + memcpy(writeTo, replace.buffer, replace.len); + writeTo += replace.len; + readFrom = foundAt + find.len; + len += diff; + } + strcpy(writeTo, readFrom); + } else { + unsigned int size = len; // compute size needed for result + while ((foundAt = strstr(readFrom, find.buffer)) != NULL) { + readFrom = foundAt + find.len; + size += diff; + } + if (size == len) return; + if (size > capacity && !changeBuffer(size)) return; // XXX: tell user! + int index = len - 1; + while (index >= 0 && (index = lastIndexOf(find, index)) >= 0) { + readFrom = buffer + index + find.len; + memmove(readFrom + diff, readFrom, len - (readFrom - buffer)); + len += diff; + buffer[len] = 0; + memcpy(buffer + index, replace.buffer, replace.len); + index--; + } + } +} + +void String::toLowerCase(void) +{ + if (!buffer) return; + for (char *p = buffer; *p; p++) { + *p = tolower(*p); + } +} + +void String::toUpperCase(void) +{ + if (!buffer) return; + for (char *p = buffer; *p; p++) { + *p = toupper(*p); + } +} + +void String::trim(void) +{ + if (!buffer || len == 0) return; + char *begin = buffer; + while (isspace(*begin)) begin++; + char *end = buffer + len - 1; + while (isspace(*end) && end >= begin) end--; + len = end + 1 - begin; + if (begin > buffer) memcpy(buffer, begin, len); + buffer[len] = 0; +} + +/*********************************************/ +/* Parsing / Conversion */ +/*********************************************/ + +long String::toInt(void) const +{ + if (buffer) return atol(buffer); + return 0; +} + + diff --git a/examples/osd/arduino-htu21/WString.h b/examples/osd/arduino-htu21/WString.h new file mode 100644 index 000000000..947325e5f --- /dev/null +++ b/examples/osd/arduino-htu21/WString.h @@ -0,0 +1,205 @@ +/* + WString.h - String library for Wiring & Arduino + ...mostly rewritten by Paul Stoffregen... + Copyright (c) 2009-10 Hernando Barragan. All right reserved. + Copyright 2011, Paul Stoffregen, paul@pjrc.com + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +*/ + +#ifndef String_class_h +#define String_class_h +#ifdef __cplusplus + +#include +#include +#include +#include + +// When compiling programs with this class, the following gcc parameters +// dramatically increase performance and memory (RAM) efficiency, typically +// with little or no increase in code size. +// -felide-constructors +// -std=c++0x + +class __FlashStringHelper; +#define F(string_literal) (reinterpret_cast(PSTR(string_literal))) + +// An inherited class for holding the result of a concatenation. These +// result objects are assumed to be writable by subsequent concatenations. +class StringSumHelper; + +// The string class +class String +{ + // use a function pointer to allow for "if (s)" without the + // complications of an operator bool(). for more information, see: + // http://www.artima.com/cppsource/safebool.html + typedef void (String::*StringIfHelperType)() const; + void StringIfHelper() const {} + +public: + // constructors + // creates a copy of the initial value. + // if the initial value is null or invalid, or if memory allocation + // fails, the string will be marked as invalid (i.e. "if (s)" will + // be false). + String(const char *cstr = ""); + String(const String &str); + #ifdef __GXX_EXPERIMENTAL_CXX0X__ + String(String &&rval); + String(StringSumHelper &&rval); + #endif + explicit String(char c); + explicit String(unsigned char, unsigned char base=10); + explicit String(int, unsigned char base=10); + explicit String(unsigned int, unsigned char base=10); + explicit String(long, unsigned char base=10); + explicit String(unsigned long, unsigned char base=10); + ~String(void); + + // memory management + // return true on success, false on failure (in which case, the string + // is left unchanged). reserve(0), if successful, will validate an + // invalid string (i.e., "if (s)" will be true afterwards) + unsigned char reserve(unsigned int size); + inline unsigned int length(void) const {return len;} + + // creates a copy of the assigned value. if the value is null or + // invalid, or if the memory allocation fails, the string will be + // marked as invalid ("if (s)" will be false). + String & operator = (const String &rhs); + String & operator = (const char *cstr); + #ifdef __GXX_EXPERIMENTAL_CXX0X__ + String & operator = (String &&rval); + String & operator = (StringSumHelper &&rval); + #endif + + // concatenate (works w/ built-in types) + + // returns true on success, false on failure (in which case, the string + // is left unchanged). if the argument is null or invalid, the + // concatenation is considered unsucessful. + unsigned char concat(const String &str); + unsigned char concat(const char *cstr); + unsigned char concat(char c); + unsigned char concat(unsigned char c); + unsigned char concat(int num); + unsigned char concat(unsigned int num); + unsigned char concat(long num); + unsigned char concat(unsigned long num); + + // if there's not enough memory for the concatenated value, the string + // will be left unchanged (but this isn't signalled in any way) + String & operator += (const String &rhs) {concat(rhs); return (*this);} + String & operator += (const char *cstr) {concat(cstr); return (*this);} + String & operator += (char c) {concat(c); return (*this);} + String & operator += (unsigned char num) {concat(num); return (*this);} + String & operator += (int num) {concat(num); return (*this);} + String & operator += (unsigned int num) {concat(num); return (*this);} + String & operator += (long num) {concat(num); return (*this);} + String & operator += (unsigned long num) {concat(num); return (*this);} + + friend StringSumHelper & operator + (const StringSumHelper &lhs, const String &rhs); + friend StringSumHelper & operator + (const StringSumHelper &lhs, const char *cstr); + friend StringSumHelper & operator + (const StringSumHelper &lhs, char c); + friend StringSumHelper & operator + (const StringSumHelper &lhs, unsigned char num); + friend StringSumHelper & operator + (const StringSumHelper &lhs, int num); + friend StringSumHelper & operator + (const StringSumHelper &lhs, unsigned int num); + friend StringSumHelper & operator + (const StringSumHelper &lhs, long num); + friend StringSumHelper & operator + (const StringSumHelper &lhs, unsigned long num); + + // comparison (only works w/ Strings and "strings") + operator StringIfHelperType() const { return buffer ? &String::StringIfHelper : 0; } + int compareTo(const String &s) const; + unsigned char equals(const String &s) const; + unsigned char equals(const char *cstr) const; + unsigned char operator == (const String &rhs) const {return equals(rhs);} + unsigned char operator == (const char *cstr) const {return equals(cstr);} + unsigned char operator != (const String &rhs) const {return !equals(rhs);} + unsigned char operator != (const char *cstr) const {return !equals(cstr);} + unsigned char operator < (const String &rhs) const; + unsigned char operator > (const String &rhs) const; + unsigned char operator <= (const String &rhs) const; + unsigned char operator >= (const String &rhs) const; + unsigned char equalsIgnoreCase(const String &s) const; + unsigned char startsWith( const String &prefix) const; + unsigned char startsWith(const String &prefix, unsigned int offset) const; + unsigned char endsWith(const String &suffix) const; + + // character acccess + char charAt(unsigned int index) const; + void setCharAt(unsigned int index, char c); + char operator [] (unsigned int index) const; + char& operator [] (unsigned int index); + void getBytes(unsigned char *buf, unsigned int bufsize, unsigned int index=0) const; + void toCharArray(char *buf, unsigned int bufsize, unsigned int index=0) const + {getBytes((unsigned char *)buf, bufsize, index);} + + // search + int indexOf( char ch ) const; + int indexOf( char ch, unsigned int fromIndex ) const; + int indexOf( const String &str ) const; + int indexOf( const String &str, unsigned int fromIndex ) const; + int lastIndexOf( char ch ) const; + int lastIndexOf( char ch, unsigned int fromIndex ) const; + int lastIndexOf( const String &str ) const; + int lastIndexOf( const String &str, unsigned int fromIndex ) const; + String substring( unsigned int beginIndex ) const; + String substring( unsigned int beginIndex, unsigned int endIndex ) const; + + // modification + void replace(char find, char replace); + void replace(const String& find, const String& replace); + void toLowerCase(void); + void toUpperCase(void); + void trim(void); + + // parsing/conversion + long toInt(void) const; + +protected: + char *buffer; // the actual char array + unsigned int capacity; // the array length minus one (for the '\0') + unsigned int len; // the String length (not counting the '\0') + unsigned char flags; // unused, for future features +protected: + void init(void); + void invalidate(void); + unsigned char changeBuffer(unsigned int maxStrLen); + unsigned char concat(const char *cstr, unsigned int length); + + // copy and move + String & copy(const char *cstr, unsigned int length); + #ifdef __GXX_EXPERIMENTAL_CXX0X__ + void move(String &rhs); + #endif +}; + +class StringSumHelper : public String +{ +public: + StringSumHelper(const String &s) : String(s) {} + StringSumHelper(const char *p) : String(p) {} + StringSumHelper(char c) : String(c) {} + StringSumHelper(unsigned char num) : String(num) {} + StringSumHelper(int num) : String(num) {} + StringSumHelper(unsigned int num) : String(num) {} + StringSumHelper(long num) : String(num) {} + StringSumHelper(unsigned long num) : String(num) {} +}; + +#endif // __cplusplus +#endif // String_class_h diff --git a/examples/osd/arduino-htu21/Wire.cpp b/examples/osd/arduino-htu21/Wire.cpp new file mode 100644 index 000000000..4e7a17c47 --- /dev/null +++ b/examples/osd/arduino-htu21/Wire.cpp @@ -0,0 +1,298 @@ +/* + TwoWire.cpp - TWI/I2C library for Wiring & Arduino + Copyright (c) 2006 Nicholas Zambetti. All right reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Modified 2012 by Todd Krein (todd@krein.org) to implement repeated starts +*/ + +extern "C" { + #include + #include + #include + #include "twi.h" +} + +#include "Wire.h" + +// Initialize Class Variables ////////////////////////////////////////////////// + +uint8_t TwoWire::rxBuffer[BUFFER_LENGTH]; +uint8_t TwoWire::rxBufferIndex = 0; +uint8_t TwoWire::rxBufferLength = 0; + +uint8_t TwoWire::txAddress = 0; +uint8_t TwoWire::txBuffer[BUFFER_LENGTH]; +uint8_t TwoWire::txBufferIndex = 0; +uint8_t TwoWire::txBufferLength = 0; + +uint8_t TwoWire::transmitting = 0; +void (*TwoWire::user_onRequest)(void); +void (*TwoWire::user_onReceive)(int); + +// Constructors //////////////////////////////////////////////////////////////// + +TwoWire::TwoWire() +{ +} + +// Public Methods ////////////////////////////////////////////////////////////// + +void TwoWire::begin(void) +{ + rxBufferIndex = 0; + rxBufferLength = 0; + + txBufferIndex = 0; + txBufferLength = 0; + + twi_init(); +} + +void TwoWire::begin(uint8_t address) +{ + twi_setAddress(address); + twi_attachSlaveTxEvent(onRequestService); + twi_attachSlaveRxEvent(onReceiveService); + begin(); +} + +void TwoWire::begin(int address) +{ + begin((uint8_t)address); +} + +uint8_t TwoWire::requestFrom(uint8_t address, uint8_t quantity, uint8_t sendStop) +{ + // clamp to buffer length + if(quantity > BUFFER_LENGTH){ + quantity = BUFFER_LENGTH; + } + // perform blocking read into buffer + uint8_t read = twi_readFrom(address, rxBuffer, quantity, sendStop); + // set rx buffer iterator vars + rxBufferIndex = 0; + rxBufferLength = read; + + return read; +} + +uint8_t TwoWire::requestFrom(uint8_t address, uint8_t quantity) +{ + return requestFrom((uint8_t)address, (uint8_t)quantity, (uint8_t)true); +} + +uint8_t TwoWire::requestFrom(int address, int quantity) +{ + return requestFrom((uint8_t)address, (uint8_t)quantity, (uint8_t)true); +} + +uint8_t TwoWire::requestFrom(int address, int quantity, int sendStop) +{ + return requestFrom((uint8_t)address, (uint8_t)quantity, (uint8_t)sendStop); +} + +void TwoWire::beginTransmission(uint8_t address) +{ + // indicate that we are transmitting + transmitting = 1; + // set address of targeted slave + txAddress = address; + // reset tx buffer iterator vars + txBufferIndex = 0; + txBufferLength = 0; +} + +void TwoWire::beginTransmission(int address) +{ + beginTransmission((uint8_t)address); +} + +// +// Originally, 'endTransmission' was an f(void) function. +// It has been modified to take one parameter indicating +// whether or not a STOP should be performed on the bus. +// Calling endTransmission(false) allows a sketch to +// perform a repeated start. +// +// WARNING: Nothing in the library keeps track of whether +// the bus tenure has been properly ended with a STOP. It +// is very possible to leave the bus in a hung state if +// no call to endTransmission(true) is made. Some I2C +// devices will behave oddly if they do not see a STOP. +// +uint8_t TwoWire::endTransmission(uint8_t sendStop) +{ + // transmit buffer (blocking) + int8_t ret = twi_writeTo(txAddress, txBuffer, txBufferLength, 1, sendStop); + // reset tx buffer iterator vars + txBufferIndex = 0; + txBufferLength = 0; + // indicate that we are done transmitting + transmitting = 0; + return ret; +} + +// This provides backwards compatibility with the original +// definition, and expected behaviour, of endTransmission +// +uint8_t TwoWire::endTransmission(void) +{ + return endTransmission(true); +} + +// must be called in: +// slave tx event callback +// or after beginTransmission(address) +size_t TwoWire::write(uint8_t data) +{ + if(transmitting){ + // in master transmitter mode + // don't bother if buffer is full + if(txBufferLength >= BUFFER_LENGTH){ + setWriteError(); + return 0; + } + // put byte in tx buffer + txBuffer[txBufferIndex] = data; + ++txBufferIndex; + // update amount in buffer + txBufferLength = txBufferIndex; + }else{ + // in slave send mode + // reply to master + twi_transmit(&data, 1); + } + return 1; +} + +// must be called in: +// slave tx event callback +// or after beginTransmission(address) +size_t TwoWire::write(const uint8_t *data, size_t quantity) +{ + if(transmitting){ + // in master transmitter mode + for(size_t i = 0; i < quantity; ++i){ + write(data[i]); + } + }else{ + // in slave send mode + // reply to master + twi_transmit(data, quantity); + } + return quantity; +} + +// must be called in: +// slave rx event callback +// or after requestFrom(address, numBytes) +int TwoWire::available(void) +{ + return rxBufferLength - rxBufferIndex; +} + +// must be called in: +// slave rx event callback +// or after requestFrom(address, numBytes) +int TwoWire::read(void) +{ + int value = -1; + + // get each successive byte on each call + if(rxBufferIndex < rxBufferLength){ + value = rxBuffer[rxBufferIndex]; + ++rxBufferIndex; + } + + return value; +} + +// must be called in: +// slave rx event callback +// or after requestFrom(address, numBytes) +int TwoWire::peek(void) +{ + int value = -1; + + if(rxBufferIndex < rxBufferLength){ + value = rxBuffer[rxBufferIndex]; + } + + return value; +} + +void TwoWire::flush(void) +{ + // XXX: to be implemented. +} + +// behind the scenes function that is called when data is received +void TwoWire::onReceiveService(uint8_t* inBytes, int numBytes) +{ + // don't bother if user hasn't registered a callback + if(!user_onReceive){ + return; + } + // don't bother if rx buffer is in use by a master requestFrom() op + // i know this drops data, but it allows for slight stupidity + // meaning, they may not have read all the master requestFrom() data yet + if(rxBufferIndex < rxBufferLength){ + return; + } + // copy twi rx buffer into local read buffer + // this enables new reads to happen in parallel + for(uint8_t i = 0; i < numBytes; ++i){ + rxBuffer[i] = inBytes[i]; + } + // set rx iterator vars + rxBufferIndex = 0; + rxBufferLength = numBytes; + // alert user program + user_onReceive(numBytes); +} + +// behind the scenes function that is called when data is requested +void TwoWire::onRequestService(void) +{ + // don't bother if user hasn't registered a callback + if(!user_onRequest){ + return; + } + // reset tx buffer iterator vars + // !!! this will kill any pending pre-master sendTo() activity + txBufferIndex = 0; + txBufferLength = 0; + // alert user program + user_onRequest(); +} + +// sets function called on slave write +void TwoWire::onReceive( void (*function)(int) ) +{ + user_onReceive = function; +} + +// sets function called on slave read +void TwoWire::onRequest( void (*function)(void) ) +{ + user_onRequest = function; +} + +// Preinstantiate Objects ////////////////////////////////////////////////////// + +TwoWire Wire = TwoWire(); + diff --git a/examples/osd/arduino-htu21/Wire.h b/examples/osd/arduino-htu21/Wire.h new file mode 100644 index 000000000..a93d0f5bb --- /dev/null +++ b/examples/osd/arduino-htu21/Wire.h @@ -0,0 +1,79 @@ +/* + TwoWire.h - TWI/I2C library for Arduino & Wiring + Copyright (c) 2006 Nicholas Zambetti. All right reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Modified 2012 by Todd Krein (todd@krein.org) to implement repeated starts +*/ + +#ifndef TwoWire_h +#define TwoWire_h + +#include +#include "Stream.h" + +#define BUFFER_LENGTH 32 + +class TwoWire : public Stream +{ + private: + static uint8_t rxBuffer[]; + static uint8_t rxBufferIndex; + static uint8_t rxBufferLength; + + static uint8_t txAddress; + static uint8_t txBuffer[]; + static uint8_t txBufferIndex; + static uint8_t txBufferLength; + + static uint8_t transmitting; + static void (*user_onRequest)(void); + static void (*user_onReceive)(int); + static void onRequestService(void); + static void onReceiveService(uint8_t*, int); + public: + TwoWire(); + void begin(); + void begin(uint8_t); + void begin(int); + void beginTransmission(uint8_t); + void beginTransmission(int); + uint8_t endTransmission(void); + uint8_t endTransmission(uint8_t); + uint8_t requestFrom(uint8_t, uint8_t); + uint8_t requestFrom(uint8_t, uint8_t, uint8_t); + uint8_t requestFrom(int, int); + uint8_t requestFrom(int, int, int); + virtual size_t write(uint8_t); + virtual size_t write(const uint8_t *, size_t); + virtual int available(void); + virtual int read(void); + virtual int peek(void); + virtual void flush(void); + void onReceive( void (*)(int) ); + void onRequest( void (*)(void) ); + + inline size_t write(unsigned long n) { return write((uint8_t)n); } + inline size_t write(long n) { return write((uint8_t)n); } + inline size_t write(unsigned int n) { return write((uint8_t)n); } + inline size_t write(int n) { return write((uint8_t)n); } + using Print::write; +}; + +extern TwoWire Wire; + +#endif + diff --git a/examples/osd/arduino-htu21/arduino-example.c b/examples/osd/arduino-htu21/arduino-example.c new file mode 100644 index 000000000..ea74dd8b8 --- /dev/null +++ b/examples/osd/arduino-htu21/arduino-example.c @@ -0,0 +1,2 @@ +#include +AUTOSTART_PROCESSES(&arduino_sketch); diff --git a/examples/osd/arduino-htu21/flash.sh b/examples/osd/arduino-htu21/flash.sh new file mode 100755 index 000000000..e9cb40bfc --- /dev/null +++ b/examples/osd/arduino-htu21/flash.sh @@ -0,0 +1,2 @@ +#!/bin/bash +make TARGET=osd-merkur flash diff --git a/examples/osd/arduino-htu21/new.cpp b/examples/osd/arduino-htu21/new.cpp new file mode 100644 index 000000000..b81031e90 --- /dev/null +++ b/examples/osd/arduino-htu21/new.cpp @@ -0,0 +1,28 @@ +#include + +void * operator new(size_t size) +{ + return malloc(size); +} + +void * operator new[](size_t size) +{ + return malloc(size); +} + +void operator delete(void * ptr) +{ + free(ptr); +} + +void operator delete[](void * ptr) +{ + free(ptr); +} + +int __cxa_guard_acquire(__guard *g) {return !*(char *)(g);}; +void __cxa_guard_release (__guard *g) {*(char *)g = 1;}; +void __cxa_guard_abort (__guard *) {}; + +void __cxa_pure_virtual(void) {}; + diff --git a/examples/osd/arduino-htu21/new.h b/examples/osd/arduino-htu21/new.h new file mode 100644 index 000000000..991c86c75 --- /dev/null +++ b/examples/osd/arduino-htu21/new.h @@ -0,0 +1,24 @@ +/* Header to define new/delete operators as they aren't provided by avr-gcc by default + Taken from http://www.avrfreaks.net/index.php?name=PNphpBB2&file=viewtopic&t=59453 + */ + +#ifndef NEW_H +#define NEW_H + +#include + +void * operator new(size_t size); +void * operator new[](size_t size); +void operator delete(void * ptr); +void operator delete[](void * ptr); + +__extension__ typedef int __guard __attribute__((mode (__DI__))); + +extern "C" int __cxa_guard_acquire(__guard *); +extern "C" void __cxa_guard_release (__guard *); +extern "C" void __cxa_guard_abort (__guard *); + +extern "C" void __cxa_pure_virtual(void); + +#endif + diff --git a/examples/osd/arduino-htu21/project-conf.h b/examples/osd/arduino-htu21/project-conf.h new file mode 100644 index 000000000..e25aed53c --- /dev/null +++ b/examples/osd/arduino-htu21/project-conf.h @@ -0,0 +1,106 @@ +/* + * Copyright (c) 2010, Swedish Institute of Computer Science. + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * + */ + +#ifndef PROJECT_RPL_WEB_CONF_H_ +#define PROJECT_RPL_WEB_CONF_H_ + +#define PLATFORM_HAS_LEDS 1 +//#define PLATFORM_HAS_BUTTON 1 +#define PLATFORM_HAS_BATTERY 1 + +#define SICSLOWPAN_CONF_FRAG 1 + +#define LOOP_INTERVAL (10 * CLOCK_SECOND) + +/* Save energy */ +//#define RDC_CONF_PT_YIELD_OFF + +/* For Debug: Dont allow MCU sleeping between channel checks */ +//#undef RDC_CONF_MCU_SLEEP +//#define RDC_CONF_MCU_SLEEP 0 + +/* Disabling RDC for demo purposes. Core updates often require more memory. */ +/* For projects, optimize memory and enable RDC again. */ +// #undef NETSTACK_CONF_RDC +//#define NETSTACK_CONF_RDC nullrdc_driver + +/* Increase rpl-border-router IP-buffer when using more than 64. */ +#undef REST_MAX_CHUNK_SIZE +#define REST_MAX_CHUNK_SIZE 64 + +/* Estimate your header size, especially when using Proxy-Uri. */ +/* +#undef COAP_MAX_HEADER_SIZE +#define COAP_MAX_HEADER_SIZE 70 +*/ + +/* The IP buffer size must fit all other hops, in particular the border router. */ + +#undef UIP_CONF_BUFFER_SIZE +#define UIP_CONF_BUFFER_SIZE 256 + + +/* Multiplies with chunk size, be aware of memory constraints. */ +#undef COAP_MAX_OPEN_TRANSACTIONS +#define COAP_MAX_OPEN_TRANSACTIONS 4 + +/* Must be <= open transaction number, default is COAP_MAX_OPEN_TRANSACTIONS-1. */ +/* +#undef COAP_MAX_OBSERVERS +#define COAP_MAX_OBSERVERS 2 +*/ + +/* Filtering .well-known/core per query can be disabled to save space. */ +/* +#undef COAP_LINK_FORMAT_FILTERING +#define COAP_LINK_FORMAT_FILTERING 0 +*/ + +/* Save some memory for the sky platform. */ +/* +#undef NBR_TABLE_CONF_MAX_NEIGHBORS +#define NBR_TABLE_CONF_MAX_NEIGHBORS 10 +#undef UIP_CONF_MAX_ROUTES +#define UIP_CONF_MAX_ROUTES 10 +*/ + +/* Reduce 802.15.4 frame queue to save RAM. */ +/* +#undef QUEUEBUF_CONF_NUM +#define QUEUEBUF_CONF_NUM 4 +*/ + +/* +#undef SICSLOWPAN_CONF_FRAG +#define SICSLOWPAN_CONF_FRAG 1 +*/ + +#endif /* PROJECT_RPL_WEB_CONF_H_ */ diff --git a/examples/osd/arduino-htu21/resources/res-htu21dhum.c b/examples/osd/arduino-htu21/resources/res-htu21dhum.c new file mode 100644 index 000000000..f66c71c74 --- /dev/null +++ b/examples/osd/arduino-htu21/resources/res-htu21dhum.c @@ -0,0 +1,80 @@ +/* + * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the Contiki operating system. + */ + +/** + * \file + * Moisture resource + * \author + * Harald Pichler + */ + +#include "contiki.h" + +#include +#include "rest-engine.h" +#include "Arduino.h" + +static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset); + +/* A simple getter example. Returns the reading from the sensor with a simple etag */ +RESOURCE(res_htu21dhum, + "title=\"Moisture status\";rt=\"Moisture\"", + res_get_handler, + NULL, + NULL, + NULL); + +extern char htu21d_hum_s[8]; + + +static void +res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset) +{ + + unsigned int accept = -1; + REST.get_header_accept(request, &accept); + + if(accept == -1 || accept == REST.type.TEXT_PLAIN) { + REST.set_header_content_type(response, REST.type.TEXT_PLAIN); + snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%s", htu21d_hum_s); + + REST.set_response_payload(response, buffer, strlen((char *)buffer)); + } else if(accept == REST.type.APPLICATION_JSON) { + REST.set_header_content_type(response, REST.type.APPLICATION_JSON); + snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'moisture':%s}", htu21d_hum_s); + + REST.set_response_payload(response, buffer, strlen((char *)buffer)); + } else { + REST.set_response_status(response, REST.status.NOT_ACCEPTABLE); + const char *msg = "Supporting content-types text/plain and application/json"; + REST.set_response_payload(response, msg, strlen(msg)); + } +} diff --git a/examples/osd/arduino-htu21/resources/res-htu21dtemp.c b/examples/osd/arduino-htu21/resources/res-htu21dtemp.c new file mode 100644 index 000000000..cdc9a9a7d --- /dev/null +++ b/examples/osd/arduino-htu21/resources/res-htu21dtemp.c @@ -0,0 +1,79 @@ +/* + * Copyright (c) 2013, Institute for Pervasive Computing, ETH Zurich + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. Neither the name of the Institute nor the names of its contributors + * may be used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * This file is part of the Contiki operating system. + */ + +/** + * \file + * Moisture resource + * \author + * Harald Pichler + */ + +#include "contiki.h" + +#include +#include "rest-engine.h" +#include "Arduino.h" + +static void res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset); + +/* A simple getter example. Returns the reading from the sensor with a simple etag */ +RESOURCE(res_htu21dtemp, + "title=\"Temperature status\";rt=\"Temperatur\"", + res_get_handler, + NULL, + NULL, + NULL); + +extern char htu21d_temp_s[8]; + +static void +res_get_handler(void *request, void *response, uint8_t *buffer, uint16_t preferred_size, int32_t *offset) +{ + + unsigned int accept = -1; + REST.get_header_accept(request, &accept); + + if(accept == -1 || accept == REST.type.TEXT_PLAIN) { + REST.set_header_content_type(response, REST.type.TEXT_PLAIN); + snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "%s", htu21d_temp_s); + + REST.set_response_payload(response, buffer, strlen((char *)buffer)); + } else if(accept == REST.type.APPLICATION_JSON) { + REST.set_header_content_type(response, REST.type.APPLICATION_JSON); + snprintf((char *)buffer, REST_MAX_CHUNK_SIZE, "{'temperature':%s}", htu21d_temp_s); + + REST.set_response_payload(response, buffer, strlen((char *)buffer)); + } else { + REST.set_response_status(response, REST.status.NOT_ACCEPTABLE); + const char *msg = "Supporting content-types text/plain and application/json"; + REST.set_response_payload(response, msg, strlen(msg)); + } +} diff --git a/examples/osd/arduino-htu21/run.sh b/examples/osd/arduino-htu21/run.sh new file mode 100755 index 000000000..295a9ab1d --- /dev/null +++ b/examples/osd/arduino-htu21/run.sh @@ -0,0 +1,5 @@ +#!/bin/bash +# For the new bootloader (using a jump-table) you want to use +# BOOTLOADER_GET_MAC=0x0001ff80 (which is the current default) +make clean TARGET=osd-merkur +make TARGET=osd-merkur BOOTLOADER_GET_MAC=0x0001f3a0 diff --git a/examples/osd/arduino-htu21/sketch.pde b/examples/osd/arduino-htu21/sketch.pde new file mode 100644 index 000000000..93dc1d1c3 --- /dev/null +++ b/examples/osd/arduino-htu21/sketch.pde @@ -0,0 +1,71 @@ +/* + * Sample arduino sketch using contiki features. + * We turn the LED off + * We allow read the moisture sensor + * Unfortunately sleeping for long times in loop() isn't currently + * possible, something turns off the CPU (including PWM outputs) if a + * Proto-Thread is taking too long. We need to find out how to sleep in + * a Contiki-compatible way. + * Note that for a normal arduino sketch you won't have to include any + * of the contiki-specific files here, the sketch should just work. + */ + +#include +#include "Adafruit_HTU21DF.h" + +extern "C" { + + +#include "rest-engine.h" + +extern volatile uint8_t mcusleepcycle; // default 16 + +Adafruit_HTU21DF htu = Adafruit_HTU21DF(); + +extern resource_t res_htu21dtemp, res_htu21dhum, res_battery; +float htu21d_hum; +float htu21d_temp; +char htu21d_hum_s[8]; +char htu21d_temp_s[8]; + +#define LED_PIN 4 +} + +void setup (void) +{ + // switch off the led + pinMode(LED_PIN, OUTPUT); + digitalWrite(LED_PIN, HIGH); + // htu21d sensor + if (!htu.begin()) { + printf("Couldn't find sensor!"); + } + // init coap resourcen + rest_init_engine (); + rest_activate_resource (&res_htu21dtemp, "s/temp"); + rest_activate_resource (&res_htu21dhum, "s/hum"); + rest_activate_resource (&res_battery, "s/battery"); +} + +// at project-conf.h +// LOOP_INTERVAL (10 * CLOCK_SECOND) +void loop (void) +{ + mcusleepcycle=0; // dont sleep + htu21d_temp = htu.readTemperature(); + htu21d_hum = htu.readHumidity(); + mcusleepcycle=32; // sleep, wakeup every 32 cycles + dtostrf(htu21d_temp , 6, 2, htu21d_temp_s ); + dtostrf(htu21d_hum , 6, 2, htu21d_hum_s ); + // remove space + if(htu21d_temp_s[0]==' '){ + memcpy (htu21d_temp_s,htu21d_temp_s+1,strlen(htu21d_temp_s)+1); + } + if(htu21d_hum_s[0]==' '){ + memcpy (htu21d_hum_s,htu21d_hum_s+1,strlen(htu21d_hum_s)+1); + } + +// debug only +// printf("Temp: %s",htu21d_temp_s); +// printf("\t\tHum: %s\n",htu21d_hum_s); +} diff --git a/examples/osd/arduino-htu21/twi.c b/examples/osd/arduino-htu21/twi.c new file mode 100644 index 000000000..6b2db3cdc --- /dev/null +++ b/examples/osd/arduino-htu21/twi.c @@ -0,0 +1,527 @@ +/* + twi.c - TWI/I2C library for Wiring & Arduino + Copyright (c) 2006 Nicholas Zambetti. All right reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA + + Modified 2012 by Todd Krein (todd@krein.org) to implement repeated starts +*/ + +#include +#include +#include +#include +#include +#include +#include "Arduino.h" // for digitalWrite + +#ifndef cbi +#define cbi(sfr, bit) (_SFR_BYTE(sfr) &= ~_BV(bit)) +#endif + +#ifndef sbi +#define sbi(sfr, bit) (_SFR_BYTE(sfr) |= _BV(bit)) +#endif + +#include "pins_arduino.h" +#include "twi.h" + +static volatile uint8_t twi_state; +static volatile uint8_t twi_slarw; +static volatile uint8_t twi_sendStop; // should the transaction end with a stop +static volatile uint8_t twi_inRepStart; // in the middle of a repeated start + +static void (*twi_onSlaveTransmit)(void); +static void (*twi_onSlaveReceive)(uint8_t*, int); + +static uint8_t twi_masterBuffer[TWI_BUFFER_LENGTH]; +static volatile uint8_t twi_masterBufferIndex; +static volatile uint8_t twi_masterBufferLength; + +static uint8_t twi_txBuffer[TWI_BUFFER_LENGTH]; +static volatile uint8_t twi_txBufferIndex; +static volatile uint8_t twi_txBufferLength; + +static uint8_t twi_rxBuffer[TWI_BUFFER_LENGTH]; +static volatile uint8_t twi_rxBufferIndex; + +static volatile uint8_t twi_error; + +/* + * Function twi_init + * Desc readys twi pins and sets twi bitrate + * Input none + * Output none + */ +void twi_init(void) +{ + // initialize state + twi_state = TWI_READY; + twi_sendStop = true; // default value + twi_inRepStart = false; + + // activate internal pullups for twi. + digitalWrite(SDA, 1); + digitalWrite(SCL, 1); + + // initialize twi prescaler and bit rate + cbi(TWSR, TWPS0); + cbi(TWSR, TWPS1); + TWBR = ((F_CPU / TWI_FREQ) - 16) / 2; + + /* twi bit rate formula from atmega128 manual pg 204 + SCL Frequency = CPU Clock Frequency / (16 + (2 * TWBR)) + note: TWBR should be 10 or higher for master mode + It is 72 for a 16mhz Wiring board with 100kHz TWI */ + + // enable twi module, acks, and twi interrupt + TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA); +} + +/* + * Function twi_slaveInit + * Desc sets slave address and enables interrupt + * Input none + * Output none + */ +void twi_setAddress(uint8_t address) +{ + // set twi slave address (skip over TWGCE bit) + TWAR = address << 1; +} + +/* + * Function twi_readFrom + * Desc attempts to become twi bus master and read a + * series of bytes from a device on the bus + * Input address: 7bit i2c device address + * data: pointer to byte array + * length: number of bytes to read into array + * sendStop: Boolean indicating whether to send a stop at the end + * Output number of bytes read + */ +uint8_t twi_readFrom(uint8_t address, uint8_t* data, uint8_t length, uint8_t sendStop) +{ + uint8_t i; + + // ensure data will fit into buffer + if(TWI_BUFFER_LENGTH < length){ + return 0; + } + + // wait until twi is ready, become master receiver + while(TWI_READY != twi_state){ + continue; + } + twi_state = TWI_MRX; + twi_sendStop = sendStop; + // reset error state (0xFF.. no error occured) + twi_error = 0xFF; + + // initialize buffer iteration vars + twi_masterBufferIndex = 0; + twi_masterBufferLength = length-1; // This is not intuitive, read on... + // On receive, the previously configured ACK/NACK setting is transmitted in + // response to the received byte before the interrupt is signalled. + // Therefor we must actually set NACK when the _next_ to last byte is + // received, causing that NACK to be sent in response to receiving the last + // expected byte of data. + + // build sla+w, slave device address + w bit + twi_slarw = TW_READ; + twi_slarw |= address << 1; + + if (true == twi_inRepStart) { + // if we're in the repeated start state, then we've already sent the start, + // (@@@ we hope), and the TWI statemachine is just waiting for the address byte. + // We need to remove ourselves from the repeated start state before we enable interrupts, + // since the ISR is ASYNC, and we could get confused if we hit the ISR before cleaning + // up. Also, don't enable the START interrupt. There may be one pending from the + // repeated start that we sent outselves, and that would really confuse things. + twi_inRepStart = false; // remember, we're dealing with an ASYNC ISR + TWDR = twi_slarw; + TWCR = _BV(TWINT) | _BV(TWEA) | _BV(TWEN) | _BV(TWIE); // enable INTs, but not START + } + else + // send start condition + TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT) | _BV(TWSTA); + + // wait for read operation to complete + while(TWI_MRX == twi_state){ + continue; + } + + if (twi_masterBufferIndex < length) + length = twi_masterBufferIndex; + + // copy twi buffer to data + for(i = 0; i < length; ++i){ + data[i] = twi_masterBuffer[i]; + } + + return length; +} + +/* + * Function twi_writeTo + * Desc attempts to become twi bus master and write a + * series of bytes to a device on the bus + * Input address: 7bit i2c device address + * data: pointer to byte array + * length: number of bytes in array + * wait: boolean indicating to wait for write or not + * sendStop: boolean indicating whether or not to send a stop at the end + * Output 0 .. success + * 1 .. length to long for buffer + * 2 .. address send, NACK received + * 3 .. data send, NACK received + * 4 .. other twi error (lost bus arbitration, bus error, ..) + */ +uint8_t twi_writeTo(uint8_t address, uint8_t* data, uint8_t length, uint8_t wait, uint8_t sendStop) +{ + uint8_t i; + + // ensure data will fit into buffer + if(TWI_BUFFER_LENGTH < length){ + return 1; + } + + // wait until twi is ready, become master transmitter + while(TWI_READY != twi_state){ + continue; + } + twi_state = TWI_MTX; + twi_sendStop = sendStop; + // reset error state (0xFF.. no error occured) + twi_error = 0xFF; + + // initialize buffer iteration vars + twi_masterBufferIndex = 0; + twi_masterBufferLength = length; + + // copy data to twi buffer + for(i = 0; i < length; ++i){ + twi_masterBuffer[i] = data[i]; + } + + // build sla+w, slave device address + w bit + twi_slarw = TW_WRITE; + twi_slarw |= address << 1; + + // if we're in a repeated start, then we've already sent the START + // in the ISR. Don't do it again. + // + if (true == twi_inRepStart) { + // if we're in the repeated start state, then we've already sent the start, + // (@@@ we hope), and the TWI statemachine is just waiting for the address byte. + // We need to remove ourselves from the repeated start state before we enable interrupts, + // since the ISR is ASYNC, and we could get confused if we hit the ISR before cleaning + // up. Also, don't enable the START interrupt. There may be one pending from the + // repeated start that we sent outselves, and that would really confuse things. + twi_inRepStart = false; // remember, we're dealing with an ASYNC ISR + TWDR = twi_slarw; + TWCR = _BV(TWINT) | _BV(TWEA) | _BV(TWEN) | _BV(TWIE); // enable INTs, but not START + } + else + // send start condition + TWCR = _BV(TWINT) | _BV(TWEA) | _BV(TWEN) | _BV(TWIE) | _BV(TWSTA); // enable INTs + + // wait for write operation to complete + while(wait && (TWI_MTX == twi_state)){ + continue; + } + + if (twi_error == 0xFF) + return 0; // success + else if (twi_error == TW_MT_SLA_NACK) + return 2; // error: address send, nack received + else if (twi_error == TW_MT_DATA_NACK) + return 3; // error: data send, nack received + else + return 4; // other twi error +} + +/* + * Function twi_transmit + * Desc fills slave tx buffer with data + * must be called in slave tx event callback + * Input data: pointer to byte array + * length: number of bytes in array + * Output 1 length too long for buffer + * 2 not slave transmitter + * 0 ok + */ +uint8_t twi_transmit(const uint8_t* data, uint8_t length) +{ + uint8_t i; + + // ensure data will fit into buffer + if(TWI_BUFFER_LENGTH < length){ + return 1; + } + + // ensure we are currently a slave transmitter + if(TWI_STX != twi_state){ + return 2; + } + + // set length and copy data into tx buffer + twi_txBufferLength = length; + for(i = 0; i < length; ++i){ + twi_txBuffer[i] = data[i]; + } + + return 0; +} + +/* + * Function twi_attachSlaveRxEvent + * Desc sets function called before a slave read operation + * Input function: callback function to use + * Output none + */ +void twi_attachSlaveRxEvent( void (*function)(uint8_t*, int) ) +{ + twi_onSlaveReceive = function; +} + +/* + * Function twi_attachSlaveTxEvent + * Desc sets function called before a slave write operation + * Input function: callback function to use + * Output none + */ +void twi_attachSlaveTxEvent( void (*function)(void) ) +{ + twi_onSlaveTransmit = function; +} + +/* + * Function twi_reply + * Desc sends byte or readys receive line + * Input ack: byte indicating to ack or to nack + * Output none + */ +void twi_reply(uint8_t ack) +{ + // transmit master read ready signal, with or without ack + if(ack){ + TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWINT) | _BV(TWEA); + }else{ + TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWINT); + } +} + +/* + * Function twi_stop + * Desc relinquishes bus master status + * Input none + * Output none + */ +void twi_stop(void) +{ + // send stop condition + TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT) | _BV(TWSTO); + + // wait for stop condition to be exectued on bus + // TWINT is not set after a stop condition! + while(TWCR & _BV(TWSTO)){ + continue; + } + + // update twi state + twi_state = TWI_READY; +} + +/* + * Function twi_releaseBus + * Desc releases bus control + * Input none + * Output none + */ +void twi_releaseBus(void) +{ + // release bus + TWCR = _BV(TWEN) | _BV(TWIE) | _BV(TWEA) | _BV(TWINT); + + // update twi state + twi_state = TWI_READY; +} + +SIGNAL(TWI_vect) +{ + switch(TW_STATUS){ + // All Master + case TW_START: // sent start condition + case TW_REP_START: // sent repeated start condition + // copy device address and r/w bit to output register and ack + TWDR = twi_slarw; + twi_reply(1); + break; + + // Master Transmitter + case TW_MT_SLA_ACK: // slave receiver acked address + case TW_MT_DATA_ACK: // slave receiver acked data + // if there is data to send, send it, otherwise stop + if(twi_masterBufferIndex < twi_masterBufferLength){ + // copy data to output register and ack + TWDR = twi_masterBuffer[twi_masterBufferIndex++]; + twi_reply(1); + }else{ + if (twi_sendStop) + twi_stop(); + else { + twi_inRepStart = true; // we're gonna send the START + // don't enable the interrupt. We'll generate the start, but we + // avoid handling the interrupt until we're in the next transaction, + // at the point where we would normally issue the start. + TWCR = _BV(TWINT) | _BV(TWSTA)| _BV(TWEN) ; + twi_state = TWI_READY; + } + } + break; + case TW_MT_SLA_NACK: // address sent, nack received + twi_error = TW_MT_SLA_NACK; + twi_stop(); + break; + case TW_MT_DATA_NACK: // data sent, nack received + twi_error = TW_MT_DATA_NACK; + twi_stop(); + break; + case TW_MT_ARB_LOST: // lost bus arbitration + twi_error = TW_MT_ARB_LOST; + twi_releaseBus(); + break; + + // Master Receiver + case TW_MR_DATA_ACK: // data received, ack sent + // put byte into buffer + twi_masterBuffer[twi_masterBufferIndex++] = TWDR; + case TW_MR_SLA_ACK: // address sent, ack received + // ack if more bytes are expected, otherwise nack + if(twi_masterBufferIndex < twi_masterBufferLength){ + twi_reply(1); + }else{ + twi_reply(0); + } + break; + case TW_MR_DATA_NACK: // data received, nack sent + // put final byte into buffer + twi_masterBuffer[twi_masterBufferIndex++] = TWDR; + if (twi_sendStop) + twi_stop(); + else { + twi_inRepStart = true; // we're gonna send the START + // don't enable the interrupt. We'll generate the start, but we + // avoid handling the interrupt until we're in the next transaction, + // at the point where we would normally issue the start. + TWCR = _BV(TWINT) | _BV(TWSTA)| _BV(TWEN) ; + twi_state = TWI_READY; + } + break; + case TW_MR_SLA_NACK: // address sent, nack received + twi_stop(); + break; + // TW_MR_ARB_LOST handled by TW_MT_ARB_LOST case + + // Slave Receiver + case TW_SR_SLA_ACK: // addressed, returned ack + case TW_SR_GCALL_ACK: // addressed generally, returned ack + case TW_SR_ARB_LOST_SLA_ACK: // lost arbitration, returned ack + case TW_SR_ARB_LOST_GCALL_ACK: // lost arbitration, returned ack + // enter slave receiver mode + twi_state = TWI_SRX; + // indicate that rx buffer can be overwritten and ack + twi_rxBufferIndex = 0; + twi_reply(1); + break; + case TW_SR_DATA_ACK: // data received, returned ack + case TW_SR_GCALL_DATA_ACK: // data received generally, returned ack + // if there is still room in the rx buffer + if(twi_rxBufferIndex < TWI_BUFFER_LENGTH){ + // put byte in buffer and ack + twi_rxBuffer[twi_rxBufferIndex++] = TWDR; + twi_reply(1); + }else{ + // otherwise nack + twi_reply(0); + } + break; + case TW_SR_STOP: // stop or repeated start condition received + // put a null char after data if there's room + if(twi_rxBufferIndex < TWI_BUFFER_LENGTH){ + twi_rxBuffer[twi_rxBufferIndex] = '\0'; + } + // sends ack and stops interface for clock stretching + twi_stop(); + // callback to user defined callback + twi_onSlaveReceive(twi_rxBuffer, twi_rxBufferIndex); + // since we submit rx buffer to "wire" library, we can reset it + twi_rxBufferIndex = 0; + // ack future responses and leave slave receiver state + twi_releaseBus(); + break; + case TW_SR_DATA_NACK: // data received, returned nack + case TW_SR_GCALL_DATA_NACK: // data received generally, returned nack + // nack back at master + twi_reply(0); + break; + + // Slave Transmitter + case TW_ST_SLA_ACK: // addressed, returned ack + case TW_ST_ARB_LOST_SLA_ACK: // arbitration lost, returned ack + // enter slave transmitter mode + twi_state = TWI_STX; + // ready the tx buffer index for iteration + twi_txBufferIndex = 0; + // set tx buffer length to be zero, to verify if user changes it + twi_txBufferLength = 0; + // request for txBuffer to be filled and length to be set + // note: user must call twi_transmit(bytes, length) to do this + twi_onSlaveTransmit(); + // if they didn't change buffer & length, initialize it + if(0 == twi_txBufferLength){ + twi_txBufferLength = 1; + twi_txBuffer[0] = 0x00; + } + // transmit first byte from buffer, fall + case TW_ST_DATA_ACK: // byte sent, ack returned + // copy data to output register + TWDR = twi_txBuffer[twi_txBufferIndex++]; + // if there is more to send, ack, otherwise nack + if(twi_txBufferIndex < twi_txBufferLength){ + twi_reply(1); + }else{ + twi_reply(0); + } + break; + case TW_ST_DATA_NACK: // received nack, we are done + case TW_ST_LAST_DATA: // received ack, but we are done already! + // ack future responses + twi_reply(1); + // leave slave receiver state + twi_state = TWI_READY; + break; + + // All + case TW_NO_INFO: // no state information + break; + case TW_BUS_ERROR: // bus error, illegal stop/start + twi_error = TW_BUS_ERROR; + twi_stop(); + break; + } +} + diff --git a/examples/osd/arduino-htu21/twi.h b/examples/osd/arduino-htu21/twi.h new file mode 100644 index 000000000..652659339 --- /dev/null +++ b/examples/osd/arduino-htu21/twi.h @@ -0,0 +1,53 @@ +/* + twi.h - TWI/I2C library for Wiring & Arduino + Copyright (c) 2006 Nicholas Zambetti. All right reserved. + + This library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + This library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with this library; if not, write to the Free Software + Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA +*/ + +#ifndef twi_h +#define twi_h + + #include + + //#define ATMEGA8 + + #ifndef TWI_FREQ + #define TWI_FREQ 100000L + #endif + + #ifndef TWI_BUFFER_LENGTH + #define TWI_BUFFER_LENGTH 32 + #endif + + #define TWI_READY 0 + #define TWI_MRX 1 + #define TWI_MTX 2 + #define TWI_SRX 3 + #define TWI_STX 4 + + void twi_init(void); + void twi_setAddress(uint8_t); + uint8_t twi_readFrom(uint8_t, uint8_t*, uint8_t, uint8_t); + uint8_t twi_writeTo(uint8_t, uint8_t*, uint8_t, uint8_t, uint8_t); + uint8_t twi_transmit(const uint8_t*, uint8_t); + void twi_attachSlaveRxEvent( void (*)(uint8_t*, int) ); + void twi_attachSlaveTxEvent( void (*)(void) ); + void twi_reply(uint8_t); + void twi_stop(void); + void twi_releaseBus(void); + +#endif +