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
Public Types |
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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 |
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HealthThermometerService ( BLE &_ble, float initialTemp, uint8_t _location) | |
Add the Health Thermometer Service to an existing
BLE
object, initialize with temperature and location.
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void | updateTemperature (float temperature) |
Update the temperature being broadcast.
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void | updateLocation ( SensorLocation_t loc) |
Update the location.
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Technical Details
Further Technical Details can be found at the following links
- Temperature Service : Gatt profile details from bluetooth.org
- Temperature Measurement : Gatt Characteristic details
- Temperature Type : Gatt Characteristic details
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();