main.cpp

00001 #include "mbed.h"
00002 #include "BME280.h"
00003 #include "ble/BLE.h"
00004 #include "ble/services/EnvironmentalService.h"
00005 
00006 #if defined(_DEBUG)
00007 Serial pc(USBTX, USBRX);
00008 #endif
00009 
00010 #if defined(TARGET_TY51822R3)
00011 BME280 sensor(I2C_SDA0, I2C_SCL0);
00012 #else
00013 BME280 sensor(I2C_SDA, I2C_SCL);
00014 #endif
00015 
00016 const static char DEVICE_NAME[] = "BME280";
00017 const static uint16_t uuid16_list[] = {GattService::UUID_ENVIRONMENTAL_SERVICE};
00018 static EnvironmentalService *service = NULL;
00019 static EventQueue eventQueue(/* event count */ 16 * EVENTS_EVENT_SIZE);
00020 
00021 void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params)
00022 {
00023     BLE::Instance(BLE::DEFAULT_INSTANCE).gap().startAdvertising(); // restart advertising
00024 }
00025 
00026 void bleInitComplete(BLE::InitializationCompleteCallbackContext *params)
00027 {
00028     BLE &ble = params->ble;
00029     ble_error_t error = params->error;
00030     service = new EnvironmentalService(ble);
00031 #if defined(_DEBUG)
00032     pc.printf("Inside BLE..starting payload creation..\r\n");
00033 #endif
00034     ble.gap().onDisconnection(disconnectionCallback);
00035 
00036     /* Setup advertising. */
00037     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE);
00038     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list));
00039     ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME));
00040     ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED);
00041     ble.gap().setAdvertisingInterval(1000);
00042     error = ble.gap().startAdvertising();
00043 #if defined(_DEBUG)
00044     pc.printf("ble.gap().startAdvertising() => %u\r\n", error);
00045 #endif
00046 }
00047 
00048 void readSensorCallback(void)
00049 {
00050     float tmp_t, tmp_p, tmp_h;
00051     
00052     if(service != NULL) {
00053         tmp_t = sensor.getTemperature();
00054         tmp_p = sensor.getPressure();
00055         tmp_h = sensor.getHumidity();
00056         service->updatePressure(tmp_p);
00057         service->updateTemperature(tmp_t);
00058         service->updateHumidity(tmp_h);
00059 #if defined(_DEBUG)
00060         pc.printf("%04.2f hPa,  %2.2f degC,  %2.2f %%\r\n", tmp_p, tmp_t, tmp_h );
00061 #endif
00062     }
00063 }
00064 
00065 void scheduleBleEventsProcessing(BLE::OnEventsToProcessCallbackContext* context)
00066 {
00067     BLE &ble = BLE::Instance();
00068     eventQueue.call(Callback<void()>(&ble, &BLE::processEvents));
00069 }
00070 
00071 int main()
00072 {
00073     eventQueue.call_every(1000, readSensorCallback);
00074 
00075     BLE &ble = BLE::Instance();
00076     ble.onEventsToProcess(scheduleBleEventsProcessing);
00077     ble.init(bleInitComplete);
00078 
00079     eventQueue.dispatch_forever();
00080 
00081     return 0;
00082 }