160 lines
4.5 KiB
Text
160 lines
4.5 KiB
Text
/*
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* Sample arduino sketch using contiki features.
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* We turn the LED off
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* We allow read the moisture sensor
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* Unfortunately sleeping for long times in loop() isn't currently
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* possible, something turns off the CPU (including PWM outputs) if a
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* Proto-Thread is taking too long. We need to find out how to sleep in
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* a Contiki-compatible way.
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* Note that for a normal arduino sketch you won't have to include any
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* of the contiki-specific files here, the sketch should just work.
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*/
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#include <Wire.h>
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#include "Adafruit_HTU21DF.h"
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#include <OneWire.h>
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#include "DallasTemperature.h"
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extern "C" {
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#include "rest-engine.h"
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#include "sketch.h"
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extern volatile uint8_t mcusleepcycle; // default 16
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// Data wire is plugged into port 2 on the Arduino
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#define ONE_WIRE_BUS 3
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#define TEMPERATURE_PRECISION 9
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// Setup a oneWire instance to communicate with any OneWire devices (not just Maxim/Dallas temperature ICs)
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OneWire oneWire(ONE_WIRE_BUS);
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// Pass our oneWire reference to Dallas Temperature.
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DallasTemperature dsensors(&oneWire);
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// arrays to hold device addresses
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DeviceAddress outsideThermometer;
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Adafruit_HTU21DF htu = Adafruit_HTU21DF();
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extern resource_t res_htu21dtemp, res_htu21dhum, res_dtemp1, res_battery;
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float htu21d_hum;
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float htu21d_temp;
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char htu21d_hum_s[8];
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char htu21d_temp_s[8];
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float d_temp;
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char d_temp_s[8];
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// sketch.h
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struct dstemp ds1820[7];
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#define LED_PIN 4
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}
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// main functions to print information about a device
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void printAddress(uint8_t* adress)
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{
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printf("%02X",adress[0]);
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printf("%02X",adress[1]);
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printf("%02X",adress[2]);
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printf("%02X",adress[3]);
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printf("%02X",adress[4]);
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printf("%02X",adress[5]);
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printf("%02X",adress[6]);
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printf("%02X",adress[7]);
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}
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// function to print the temperature for a device
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void printTemperature(DeviceAddress deviceAddress,int index)
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{
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d_temp = dsensors.getTempC(deviceAddress);
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dtostrf(d_temp , 6, 2, d_temp_s );
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printf("Temp C: ");
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printf("%s",d_temp_s);
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// copy to structure
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ds1820[index].ftemp=d_temp;
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strcpy(ds1820[index].stemp, d_temp_s);
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}
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void printData(DeviceAddress deviceAddress, int index)
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{
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printf("Device Address: ");
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printAddress(deviceAddress);
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printf(" ");
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printTemperature(deviceAddress,index);
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printf("\n");
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}
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void setup (void)
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{
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// switch off the led
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pinMode(LED_PIN, OUTPUT);
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digitalWrite(LED_PIN, HIGH);
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// ds1820 sensor
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printf("Dallas Temperature IC Control Library Demo");
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// Start up the library
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dsensors.begin();
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// locate devices on the bus
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printf("Locating devices...\n");
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printf("Found ");
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printf("%d",dsensors.getDeviceCount());
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printf(" devices.\n");
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// report parasite power requirements
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printf("Parasite power is: ");
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if (dsensors.isParasitePowerMode()) printf("ON\n");
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else printf("OFF\n");
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if (!dsensors.getAddress(outsideThermometer, 0)) printf("Unable to find address for Device 0\n");
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// show the addresses we found on the bus
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printf("Device 0 Address: ");
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printAddress(outsideThermometer);
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printf("\n");
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// set the resolution to 9 bit
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dsensors.setResolution(outsideThermometer, 9);
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printf("Device 0 Resolution: ");
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printf("%d",dsensors.getResolution(outsideThermometer));
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printf("\n");
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// htu21d sensor
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if (!htu.begin()) {
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printf("Couldn't find sensor!");
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}
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// init coap resourcen
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rest_init_engine ();
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rest_activate_resource (&res_htu21dtemp, "s/temp");
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rest_activate_resource (&res_htu21dhum, "s/hum");
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rest_activate_resource (&res_dtemp1, "s/t1/temp");
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rest_activate_resource (&res_battery, "s/battery");
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}
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// at project-conf.h
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// LOOP_INTERVAL (20 * CLOCK_SECOND)
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void loop (void)
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{
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mcusleepcycle=0; // dont sleep
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// call sensors.requestTemperatures() to issue a global temperature
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// request to all devices on the bus
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// printf("Requesting temperatures...");
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dsensors.requestTemperatures();
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// printf("DONE\n");
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// print the device information
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printData(outsideThermometer,0);
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htu21d_temp = htu.readTemperature();
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htu21d_hum = htu.readHumidity();
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dtostrf(htu21d_temp , 6, 2, htu21d_temp_s );
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dtostrf(htu21d_hum , 6, 2, htu21d_hum_s );
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// remove space
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if(htu21d_temp_s[0]==' '){
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memcpy (htu21d_temp_s,htu21d_temp_s+1,strlen(htu21d_temp_s)+1);
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}
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if(htu21d_hum_s[0]==' '){
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memcpy (htu21d_hum_s,htu21d_hum_s+1,strlen(htu21d_hum_s)+1);
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}
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// debug only
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printf("Temp: %s",htu21d_temp_s);
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printf("\t\tHum: %s\n",htu21d_hum_s);
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mcusleepcycle=32; // sleep, wakeup every 32 cycles
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}
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