main.cpp

00001 /*
00002 Tested with a STM32 L476 and the IDB05A1 BLE shield
00003 */
00004 
00005 #include "mbed.h"
00006 #include "ble/BLE.h"
00007 #include "DHT11_BLEService.h"
00008 #include "DHT11.h"
00009 
00010 DigitalOut LED(LED1, 0);
00011 
00012 const static char     DEVICE_NAME[] = "DHT11";
00013 static const uint16_t uuid16_list[] = {DHT11Service::DHT11_UUID};
00014 
00015 DHT11Service *dht11ServicePtr;//Bluetooth service that manage information and ble updates
00016 uint8_t tempValue;
00017 uint8_t humiValue;
00018 
00019 DHT11 dht11(PC_10);//Data pin of the DTH11 sensor
00020 Ticker updateTick;
00021 
00022 void updateData(){
00023         //LED = 1;
00024         if(!dht11.readData()){
00025            for(int i = 0; i < 10; i++){LED = !LED; wait_ms(50);}
00026         }
00027         dht11ServicePtr->updateTemperatureValue(dht11.getTemperature());
00028         dht11ServicePtr->updateHumidityValue(dht11.getHumidity());
00029         //LED = 0;
00030 }
00031 
00032 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
00033 {
00034     (void)params;
00035     BLE::Instance().gap().startAdvertising(); // restart advertising
00036 }
00037 
00038 /**
00039  * This callback allows the LEDService to receive updates to the ledState Characteristic.
00040  *
00041  * @param[in] params
00042  *     Information about the characterisitc being updated.
00043  */
00044 /*void onDataWrittenCallback(const GattWriteCallbackParams *params) {
00045     if ((params->handle == ledServicePtr->getValueHandle()) && (params->len == 1)) {
00046         actuatedLED = *(params->data);
00047     }
00048 }*/
00049 
00050 /** 
00051  * This function is called when the ble initialization process has failled 
00052  */ 
00053 void onBleInitError(BLE &ble, ble_error_t error) 
00054 { 
00055     /* Initialization error handling should go here */ 
00056 } 
00057 
00058 /** 
00059  * Callback triggered when the ble initialization process has finished 
00060  */ 
00061 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params) 
00062 {
00063     BLE&        ble   = params->ble;
00064     ble_error_t error = params->error;
00065 
00066     if (error != BLE_ERROR_NONE) {
00067         /* In case of error, forward the error handling to onBleInitError */
00068         onBleInitError(ble, error);
00069         return;
00070     }
00071 
00072     /* Ensure that it is the default instance of BLE */
00073     if(ble.getInstanceID() != BLE::DEFAULT_INSTANCE) {
00074         return;
00075     }
00076 
00077     ble.gap().onDisconnection(disconnectionCallback);
00078     //ble.gattServer().onDataWritten(onDataWrittenCallback);
00079 
00080     tempValue = 20;
00081     humiValue = 10;
00082     dht11ServicePtr = new DHT11Service(ble, tempValue,humiValue);
00083     
00084     updateTick.attach(&updateData,5.0);
00085     
00086     /* setup advertising */
00087     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
00088     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
00089     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
00090     ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
00091     ble.gap().setAdvertisingInterval(1000); /* 1000ms. */
00092     ble.gap().startAdvertising();
00093 
00094     while (true) {
00095         ble.waitForEvent();
00096     }
00097 }
00098 
00099 
00100 int main(void)
00101 {
00102     BLE &ble = BLE::Instance();
00103     
00104     ble.init(bleInitComplete);
00105 }
00106