initial upload

examples/osd/arduino-soil-moisture/sketch.pde

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+/*
+ * 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 <Wire.h>
+#include "I2CSoilMoistureSensor.h"
+
+extern "C" {
+#include "arduino-process.h"
+#include "rest-engine.h"
+
+extern resource_t res_soiltemp,res_soilcap,res_soillight, res_battery;
+
+float  soilcap;
+float  soiltemp;
+float  soillight;
+
+uint8_t    soiladdr;
+uint8_t    soilversion;
+
+char   soilcap_s[8];
+char   soiltemp_s[8];
+char   soillight_s[8];
+
+I2CSoilMoistureSensor sensor;
+
+
+#define LED_PIN 4
+}
+
+void setup (void)
+{
+    // switch off the led
+    pinMode(LED_PIN, OUTPUT);
+    digitalWrite(LED_PIN, HIGH);
+    // Soil sensor
+    Wire.begin();
+    sensor.begin(); // reset sensor
+    delay(1000); // give some time to boot up
+    printf("I2C Soil Moisture Sensor Address: ");
+    soiladdr = sensor.getAddress();
+    printf("%X\n", soiladdr);
+    printf("Sensor Firmware version: ");
+    soilversion = sensor.getVersion();   
+    printf("%X\n", soilversion);
+    sensor.startMeasureLight();
+    // init coap resourcen
+    rest_init_engine ();
+    #pragma GCC diagnostic ignored "-Wwrite-strings"
+    rest_activate_resource (&res_soiltemp, "s/temp");
+    rest_activate_resource (&res_soilcap, "s/soil");
+    rest_activate_resource (&res_soillight, "s/light");
+    rest_activate_resource (&res_battery, "s/battery");
+    #pragma GCC diagnostic pop
+}
+
+// at project-conf.h
+// LOOP_INTERVAL		(10 * CLOCK_SECOND)
+void loop (void)
+{
+
+  if(!sensor.isBusy()){ // available since FW 2.3
+    soilcap   = sensor.getCapacitance(); //read capacitance register
+    soiltemp  = sensor.getTemperature()/(float)10; //temperature register
+    soillight = sensor.getLight(0); //request light measurement, read light register
+    sensor.startMeasureLight();
+
+    dtostrf(soilcap , 0, 2, soilcap_s );   
+    dtostrf(soiltemp , 0, 2, soiltemp_s );
+    dtostrf(soillight , 0, 2, soillight_s );
+  
+//    sensor.sleep(); // available since FW 2.3
+         
+// Debug Print
+    printf("Temp: %s",soiltemp_s);
+    printf("\t\tSoil: %s",soilcap_s);
+    printf("\t\tLight: %s\n",soillight_s);
+  }  
+}