138 lines
4.0 KiB
Plaintext
138 lines
4.0 KiB
Plaintext
/*
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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 "DHT.h"
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extern "C" {
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#include "arduino-process.h"
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#include "rest-engine.h"
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#include "net/netstack.h"
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extern resource_t res_dhtatemp, res_dhtahum, res_battery;
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extern resource_t res_dhtbtemp, res_dhtbhum;
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extern resource_t res_dhtctemp, res_dhtchum;
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#define LED_PIN 4
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// Uncomment whatever type you're using!
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//#define DHTTYPE DHT11 // DHT 11
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#define DHTTYPE DHT22 // DHT 22 (AM2302), AM2321
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//#define DHTTYPE DHT21 // DHT 21 (AM2301)
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// Connect pin 1 (on the left) of the sensor to +3.3V
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// Connect pin 2 of the sensor to whatever your DHTPIN is
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// Connect pin 4 (on the right) of the sensor to GROUND
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// Connect a 10K resistor from pin 2 (data) to pin 1 (power) o
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#define DHTPINA 7 // what digital pin we're connected to
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DHT dhta(DHTPINA, DHTTYPE);
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#define DHTPINB 8 // what digital pin we're connected to
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DHT dhtb(DHTPINB, DHTTYPE);
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#define DHTPINC 9 // what digital pin we're connected to
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DHT dhtc(DHTPINC, DHTTYPE);
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float dhta_hum;
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float dhta_temp;
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char dhta_hum_s[8];
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char dhta_temp_s[8];
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float dhtb_hum;
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float dhtb_temp;
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char dhtb_hum_s[8];
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char dhtb_temp_s[8];
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float dhtc_hum;
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float dhtc_temp;
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char dhtc_hum_s[8];
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char dhtc_temp_s[8];
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}
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void setup (void)
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{
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// NETSTACK_MAC.off(1); // reciever always on
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printf("DHT Sensor\n");
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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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// DHT sensor
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dhta.begin();
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dhtb.begin();
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dhtc.begin();
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// init coap resourcen
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rest_init_engine ();
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#pragma GCC diagnostic ignored "-Wwrite-strings"
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rest_activate_resource (&res_dhtatemp, "s/tempa");
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rest_activate_resource (&res_dhtahum, "s/huma");
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rest_activate_resource (&res_dhtbtemp, "s/tempb");
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rest_activate_resource (&res_dhtbhum, "s/humb");
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rest_activate_resource (&res_dhtctemp, "s/tempc");
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rest_activate_resource (&res_dhtchum, "s/humc");
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rest_activate_resource (&res_battery, "s/battery");
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#pragma GCC diagnostic pop
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mcu_sleep_set(128); // Power consumtion 278uA; average over 20 minutes
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}
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// at project-conf.h
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// LOOP_INTERVAL (30 * CLOCK_SECOND)
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void loop (void)
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{
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int errdht=0;
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// Reading temperature or humidity takes about 250 milliseconds!
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// Sensor readings may also be up to 2 seconds 'old' (its a very slow sensor)
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dhta_hum = dhta.readHumidity();
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dhtb_hum = dhtb.readHumidity();
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dhtc_hum = dhtc.readHumidity();
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// Read temperature as Celsius (the default)
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dhta_temp = dhta.readTemperature();
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dhtb_temp = dhtb.readTemperature();
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dhtc_temp = dhtc.readTemperature();
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// Check if any reads failed and exit early (to try again).
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if (isnan(dhta_hum) || isnan(dhta_temp)) {
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printf("Failed to read from DHTa sensor!\n");
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errdht=1;
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}
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if (isnan(dhtb_hum) || isnan(dhtb_temp)) {
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printf("Failed to read from DHTb sensor!\n");
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errdht=1;
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}
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if (isnan(dhtc_hum) || isnan(dhtc_temp)) {
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printf("Failed to read from DHTc sensor!\n");
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errdht=1;
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}
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if (errdht){
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return;
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}
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dtostrf(dhta_temp , 0, 2, dhta_temp_s );
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dtostrf(dhta_hum , 0, 2, dhta_hum_s );
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dtostrf(dhtb_temp , 0, 2, dhtb_temp_s );
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dtostrf(dhtb_hum , 0, 2, dhtb_hum_s );
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dtostrf(dhtc_temp , 0, 2, dhtc_temp_s );
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dtostrf(dhtc_hum , 0, 2, dhtc_hum_s );
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// debug only
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printf("Tempa: '%s'",dhta_temp_s);
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printf("\t\tHuma: '%s'\n",dhta_hum_s);
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printf("Tempb: '%s'",dhtb_temp_s);
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printf("\t\tHumb: '%s'\n",dhtb_hum_s);
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printf("Tempc: '%s'",dhtc_temp_s);
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printf("\t\tHumc: '%s'\n",dhtc_hum_s);
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}
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