v1.5-dev4. Add support for MCP9808 temperature sensor #87

NodeManager.cpp

@@ -1691,6 +1691,47 @@ void SensorHCSR04::onReceive(const MyMessage & message) {
 }
 #endif
 
+/*
+   SensorMCP9808
+*/
+#if MODULE_MCP9808 == 1
+// contructor
+SensorMCP9808::SensorMCP9808(int child_id, Adafruit_MCP9808* mcp): Sensor(child_id,A2) {
+  _mcp = mcp;
+  setPresentation(S_TEMP);
+  setType(V_TEMP);
+  setValueType(TYPE_FLOAT);
+}
+
+// what do to during before
+void SensorMCP9808::onBefore() {
+}
+
+// what do to during setup
+void SensorMCP9808::onSetup() {
+}
+
+// what do to during loop
+void SensorMCP9808::onLoop() {
+  float temperature = _mcp->readTempC();
+  // convert it
+  if (! getControllerConfig().isMetric) temperature = temperature * 1.8 + 32;
+  #if DEBUG == 1
+    Serial.print(F("MCP I="));
+    Serial.print(_child_id);
+    Serial.print(F(" T="));
+    Serial.println(temperature);
+  #endif
+  // store the value
+  if (! isnan(temperature)) _value_float = temperature;
+}
+
+// what do to as the main task when receiving a message
+void SensorMCP9808::onReceive(const MyMessage & message) {
+  if (message.getCommand() == C_REQ) onLoop();
+}
+#endif
+
 /*******************************************
    NodeManager
 */
@@ -1929,6 +1970,19 @@ int NodeManager::registerSensor(int sensor_type, int pin, int child_id) {
       return registerSensor(new SensorHCSR04(child_id, pin));
     }
   #endif
+  #if MODULE_MCP9808 == 1
+    else if (sensor_type == SENSOR_MCP9808) {
+      Adafruit_MCP9808 * mcp = new Adafruit_MCP9808();
+      if (! mcp->begin()) {
+        #if DEBUG == 1
+          Serial.println(F("NO MCP"));
+        #endif
+        return -1;
+      }
+      // register temperature sensor
+      registerSensor(new SensorMCP9808(child_id,mcp));
+    }
+  #endif
   else {
     #if DEBUG == 1
       Serial.print(F("INVALID "));

NodeManager.h

@@ -8,7 +8,7 @@
 #include <Arduino.h>
 
 // define NodeManager version
-#define VERSION "1.5-dev3"
+#define VERSION "1.5-dev4"
 
 /***********************************
    Constants
@@ -145,6 +145,11 @@
 #ifndef MODULE_HCSR04
   #define MODULE_HCSR04 0
 #endif
+// Enable this module to use one of the following sensors: SENSOR_MCP9808
+#ifndef MODULE_MCP9808
+  #define MODULE_MCP9808 0
+#endif
+
 /***********************************
    Sensors types
 */
@@ -220,7 +225,11 @@
   // HC-SR04 sensor, return the distance between the sensor and an object
   #define SENSOR_HCSR04 23
 #endif
-// last Id: 24
+#if MODULE_MCP9808 == 1
+  // MCP9808 sensor, precision temperature sensor
+  #define SENSOR_MCP9808 25
+#endif
+// last Id: 25
 /***********************************
   Libraries
 */
@@ -276,6 +285,10 @@
 #if MODULE_HCSR04 == 1
   #include <NewPing.h>
 #endif
+#if MODULE_MCP9808 == 1
+  #include <Wire.h>
+  #include "Adafruit_MCP9808.h"
+#endif
 
 /**************************************
    Classes
@@ -898,6 +911,23 @@ class SensorSonoff: public Sensor {
 };
 #endif
 
+/*
+   SensorMCP9808
+*/
+#if MODULE_MCP9808 == 1
+class SensorMCP9808: public Sensor {
+  public:
+    SensorMCP9808(int child_id, Adafruit_MCP9808* mcp);
+    // define what to do at each stage of the sketch
+    void onBefore();
+    void onSetup();
+    void onLoop();
+    void onReceive(const MyMessage & message);
+  protected:
+    Adafruit_MCP9808* _mcp;
+};
+#endif
+
 
 /***************************************
    NodeManager: manages all the aspects of the node

NodeManager.ino

@@ -33,8 +33,8 @@ void before() {
   /*
    * Register below your sensors
   */
-
-
+  
+  
   
   /*
    * Register above your sensors

README.md

@@ -171,6 +171,8 @@ Those NodeManager's directives in the `config.h` file control which module/libra
 #define MODULE_BMP085 0
 // Enable this module to use one of the following sensors: SENSOR_HCSR04
 #define MODULE_HCSR04 0
+// Enable this module to use one of the following sensors: SENSOR_MCP9808
+#define MODULE_MCP9808 0
 ~~~
 
 ## Installing the dependencies
@@ -188,6 +190,7 @@ MODULE_BME280 | https://github.com/adafruit/Adafruit_BME280_Library
 MODULE_SONOFF | https://github.com/thomasfredericks/Bounce2
 MODULE_BMP085 | https://github.com/adafruit/Adafruit-BMP085-Library
 MODULE_HCSR04 | https://github.com/mysensors/MySensorsArduinoExamples/tree/master/libraries/NewPing
+MODULE_MCP9808 | https://github.com/adafruit/Adafruit_MCP9808_Library
 
 ## Configure NodeManager
 
@@ -294,6 +297,7 @@ SENSOR_SONOFF | Sonoff wireless smart switch
 SENSOR_BMP085 | BMP085/BMP180 sensor, return temperature and pressure
 SENSOR_HCSR04 | HC-SR04 sensor, return the distance between the sensor and an object
 SENSOR_ACS712 | ACS712 sensor, measure the current going through the attached module
+SENSOR_MCP9808 | MCP9808 sensor, measure the temperature through the attached module
 
 To register a sensor simply call the NodeManager instance with the sensory type and the pin the sensor is conncted to. For example:
 ~~~c

config.h

@@ -99,7 +99,7 @@
 #define PERSIST 0
 
 // if enabled, send a SLEEPING and AWAKE service messages just before entering and just after leaving a sleep cycle and STARTED when starting/rebooting
-#define SERVICE_MESSAGES 1
+#define SERVICE_MESSAGES 0
 // if enabled, a battery sensor will be created at BATTERY_CHILD_ID and will report vcc voltage together with the battery level percentage
 #define BATTERY_SENSOR 1
 
@@ -129,5 +129,7 @@
 #define MODULE_BMP085 0
 // Enable this module to use one of the following sensors: SENSOR_HCSR04
 #define MODULE_HCSR04 0
+// Enable this module to use one of the following sensors: SENSOR_MCP9808
+#define MODULE_MCP9808 0
 #endif