Bluetooth Low Energy
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 |
|
| 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
- Temperature Service : Gatt profile details from bluetooth.org
- Temperature Measurement : Gatt Characteristic details
- Temperature Type : Gatt Characteristic details
Revision 1:2deb859ed1a3, committed 2014-09-02
- Comitter:
- rgrover1
- Date:
- Tue Sep 02 16:24:12 2014 +0000
- Parent:
- 0:d01bde90471b
- Child:
- 2:a34d554282b0
- Commit message:
- Updating underlying libraries.
Changed in this revision
--- a/BLE_API.lib Tue Sep 02 10:34:01 2014 +0000 +++ b/BLE_API.lib Tue Sep 02 16:24:12 2014 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/teams/Bluetooth-Low-Energy/code/BLE_API/#189ff241dae1 +http://mbed.org/teams/Bluetooth-Low-Energy/code/BLE_API/#ca826083980e
--- a/HealthThermometerService.h Tue Sep 02 10:34:01 2014 +0000
+++ b/HealthThermometerService.h Tue Sep 02 16:24:12 2014 +0000
@@ -62,7 +62,7 @@
void updateTemperature(float temperature) {
if (ble.getGapState().connected) {
valueBytes.updateTemperature(temperature);
- ble.updateCharacteristicValue(tempMeasurement.getHandle(), valueBytes.getPointer(), sizeof(TemperatureValueBytes));
+ ble.updateCharacteristicValue(tempMeasurement.getValueAttribute().getHandle(), valueBytes.getPointer(), sizeof(TemperatureValueBytes));
}
}
--- 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();
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/mbed-src.lib Tue Sep 02 16:24:12 2014 +0000 @@ -0,0 +1,1 @@ +http://mbed.org/users/mbed_official/code/mbed-src/#1f0269907d8b
--- a/mbed.bld Tue Sep 02 10:34:01 2014 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,1 +0,0 @@ -http://mbed.org/users/mbed_official/code/mbed/builds/9327015d4013 \ No newline at end of file
--- a/nRF51822.lib Tue Sep 02 10:34:01 2014 +0000 +++ b/nRF51822.lib Tue Sep 02 16:24:12 2014 +0000 @@ -1,1 +1,1 @@ -http://mbed.org/teams/Nordic-Semiconductor/code/nRF51822/#1e5c300cec7f +http://mbed.org/teams/Nordic-Semiconductor/code/nRF51822/#e861f2041469