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osd-contiki/apps/arduino/arduino-process.c

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Add Arduino compatibility layer We can now directly compile arduino sketches (.pde) files. Arduino compatible analogWrite works now. But there is still a long way to go, serial I/O and timer stuff (delay, millis etc) currently don't work (not tested but I don't expect this to work). It can be used in an arduino sketch or in a normal contiki program. We get a PWM frequency of 490.2 Hz (a period of 2.040 ms), that's Arduino compatible. If you need different frequencies see native timer usage in examples/osd/pwm-example In a contiki program you have to call arduino_pwm_timer_init to initialize the timer before pwm works. The arduino sketch wrapper already does this. For running a sketch, see examples/osd/arduino-sketch
2014-06-26 11:00:01 +02:00
/*
* Copyright (c) 2014, Ralf Schlatterbeck Open Source Consulting
* 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.
*/
/**
* \addgroup Arduino Process
*
* This wraps the Arduino-API entry points `loop` and `setup` in a
* contiki process.
*
* If the normal contiki includes are used and resources initialized in
* `setup`, Contiki resources can be used in an arduino sketch.
*
* @{
*/
/**
* \file
* Wrapper for Arduino sketches
* \author
* Ralf Schlatterbeck <rsc@runtux.com>
*
*/
#include "arduino-process.h"
Make Arduino timer stuff work on Contiki New discovery: Contiki also uses timer 0. With almost the same interface as Arduino. So we now completely get rid of wiring.c (only the main file, the other wiring_xxx stay) and implement Arduino timer, delay, etc in terms of the corresponding Contiki routines. Verified that now delay works as expected. The LED in examples/osd/arduino-sketch blinks! Before this, the arduino_init routine in wiring.c destroyed the timer-0 initialization of contiki, making both, contiki timer implementation *and* contiki timer implementation fail if the arduino_init routine was called. Now both work.
2014-06-26 18:37:13 +02:00
#include "hw_timer.h"
Refactor A/D conversion in adc.c Now the necessary settings are in adc.h. Refactored to allow repeated ADC reads without reinitialization. Arduino allows setting analogReference, this is now also implemented. ADC is now initialized to sane values in apps/arduino/arduino-process.c dev/arduino/arduino-compat.h now has all hardware independent settings for arduino (some moved from platform/osd-merkur/dev/hw-arduino.h). turnOffPWM re-implemented with hw_timer, removed from wiring_digital.c ADC-specific arduino stuff moved to arduino-compat.h Arduinos wiring_analog no longer necessary. arduino-sketch example now reads analog inputs 1 and 5 using analogRead.
2014-06-29 17:26:15 +02:00
#include "adc.h"
Make Arduino timer stuff work on Contiki New discovery: Contiki also uses timer 0. With almost the same interface as Arduino. So we now completely get rid of wiring.c (only the main file, the other wiring_xxx stay) and implement Arduino timer, delay, etc in terms of the corresponding Contiki routines. Verified that now delay works as expected. The LED in examples/osd/arduino-sketch blinks! Before this, the arduino_init routine in wiring.c destroyed the timer-0 initialization of contiki, making both, contiki timer implementation *and* contiki timer implementation fail if the arduino_init routine was called. Now both work.
2014-06-26 18:37:13 +02:00
#include "hw-arduino.h"
Add Arduino compatibility layer We can now directly compile arduino sketches (.pde) files. Arduino compatible analogWrite works now. But there is still a long way to go, serial I/O and timer stuff (delay, millis etc) currently don't work (not tested but I don't expect this to work). It can be used in an arduino sketch or in a normal contiki program. We get a PWM frequency of 490.2 Hz (a period of 2.040 ms), that's Arduino compatible. If you need different frequencies see native timer usage in examples/osd/pwm-example In a contiki program you have to call arduino_pwm_timer_init to initialize the timer before pwm works. The arduino sketch wrapper already does this. For running a sketch, see examples/osd/arduino-sketch
2014-06-26 11:00:01 +02:00
PROCESS(arduino_sketch, "Arduino Sketch Wrapper");
PROCESS_THREAD(arduino_sketch, ev, data)
{
PROCESS_BEGIN();
Make Arduino timer stuff work on Contiki New discovery: Contiki also uses timer 0. With almost the same interface as Arduino. So we now completely get rid of wiring.c (only the main file, the other wiring_xxx stay) and implement Arduino timer, delay, etc in terms of the corresponding Contiki routines. Verified that now delay works as expected. The LED in examples/osd/arduino-sketch blinks! Before this, the arduino_init routine in wiring.c destroyed the timer-0 initialization of contiki, making both, contiki timer implementation *and* contiki timer implementation fail if the arduino_init routine was called. Now both work.
2014-06-26 18:37:13 +02:00
arduino_pwm_timer_init ();
Refactor A/D conversion in adc.c Now the necessary settings are in adc.h. Refactored to allow repeated ADC reads without reinitialization. Arduino allows setting analogReference, this is now also implemented. ADC is now initialized to sane values in apps/arduino/arduino-process.c dev/arduino/arduino-compat.h now has all hardware independent settings for arduino (some moved from platform/osd-merkur/dev/hw-arduino.h). turnOffPWM re-implemented with hw_timer, removed from wiring_digital.c ADC-specific arduino stuff moved to arduino-compat.h Arduinos wiring_analog no longer necessary. arduino-sketch example now reads analog inputs 1 and 5 using analogRead.
2014-06-29 17:26:15 +02:00
adc_init ();
Add Arduino compatibility layer We can now directly compile arduino sketches (.pde) files. Arduino compatible analogWrite works now. But there is still a long way to go, serial I/O and timer stuff (delay, millis etc) currently don't work (not tested but I don't expect this to work). It can be used in an arduino sketch or in a normal contiki program. We get a PWM frequency of 490.2 Hz (a period of 2.040 ms), that's Arduino compatible. If you need different frequencies see native timer usage in examples/osd/pwm-example In a contiki program you have to call arduino_pwm_timer_init to initialize the timer before pwm works. The arduino sketch wrapper already does this. For running a sketch, see examples/osd/arduino-sketch
2014-06-26 11:00:01 +02:00
setup ();
while (1) {
loop ();
/* Give other processes a chance to run */
process_post (&arduino_sketch, PROCESS_EVENT_CONTINUE, NULL);
PROCESS_WAIT_EVENT();
}
PROCESS_END();
}
/*
* VI settings, see coding style
* ex:ts=8:et:sw=2
*/
/** @} */
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