Bluetooth Low Energy / Mbed 2 deprecated BLE_Thermometer Featured

BLE demo for the Health-Thermometer service.

Dependencies:   BLE_API mbed nRF51822 X_NUCLEO_IDB0XA1

This example demonstrates how to use the Health Thermometer Service. The Health Thermometer service reports two pieces of information, Temperature and Sensor Location.

API

Import library
BLE_API - HealthThermometerService Class Reference

Public Types

enum SensorLocation_t {
LOCATION_ARMPIT = 1, LOCATION_BODY , LOCATION_EAR , LOCATION_FINGER ,
LOCATION_GI_TRACT , LOCATION_MOUTH , LOCATION_RECTUM , LOCATION_TOE ,
LOCATION_EAR_DRUM
}

Public Member Functions

HealthThermometerService ( BLE &_ble, float initialTemp, uint8_t _location)
Add the Health Thermometer Service to an existing BLE object, initialize with temperature and location.
void updateTemperature (float temperature)
Update the temperature being broadcast.
void updateLocation ( SensorLocation_t loc)
Update the location.

Technical Details

Further Technical Details can be found at the following links

Diff: main.cpp

Revision:
1:2deb859ed1a3
Parent:
0:d01bde90471b
Child:
2:a34d554282b0
--- a/main.cpp	Tue Sep 02 10:34:01 2014 +0000
+++ b/main.cpp	Tue Sep 02 16:24:12 2014 +0000
@@ -20,7 +20,6 @@
 #include "DHT.h"
 
 BLEDevice  ble;
-DigitalOut led1(LED1);
 DHT        sensor(D10, DHT11);
 
 #define NEED_CONSOLE_OUTPUT 0 /* Set this if you need debug messages on the console;
@@ -37,7 +36,7 @@
 static const uint16_t uuid16_list[]        = {GattService::UUID_HEALTH_THERMOMETER_SERVICE};
 static volatile bool  triggerSensorPolling = false;
 
-void disconnectionCallback(Gap::Handle_t handle)
+void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason)
 {
     DEBUG("Disconnected handle %u!\n\r", handle);
     DEBUG("Restarting the advertising process\n\r");
@@ -46,8 +45,6 @@
 
 void periodicCallback(void)
 {
-    led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */
-
     /* Note that the periodicCallback() executes in interrupt context, so it is safer to do
      * heavy-weight sensor polling from the main thread. */
     triggerSensorPolling = true;
@@ -55,7 +52,6 @@
 
 int main(void)
 {
-    led1 = 1;
     Ticker ticker;
     ticker.attach(periodicCallback, 1);
 
@@ -75,19 +71,15 @@
     float initialTemperature = 39.6;
     HealthThermometerService thermometerService(ble, initialTemperature, HealthThermometerService::LOCATION_EAR);
 
-    int error = 0;
-    float c = 0.0f;
-
     while (true) {
         if (triggerSensorPolling) {
             triggerSensorPolling = false;
 
             /* Do blocking calls or whatever is necessary for sensor polling. */
             /* In our case, we simply update the dummy HRM measurement. */
-            error = sensor.readData();
+            int error = sensor.readData();
             if (!error) {
-                c = sensor.ReadTemperature(CELCIUS);
-                thermometerService.updateTemperature(c);
+                thermometerService.updateTemperature(sensor.ReadTemperature(CELCIUS));
             }
         } else {
             ble.waitForEvent();