Transmit temperature data via BLE
Dependencies: BLE_API mbed nRF51822
main.cpp
- Committer:
- wgd8700
- Date:
- 2015-08-14
- Revision:
- 1:d64b82b9d615
- Parent:
- 0:ac4c040491f9
- Child:
- 2:580d838ba0cb
File content as of revision 1:d64b82b9d615:
#include "mbed.h" #include "BLE.h" #include "BatteryService.h" #include "DeviceInformationService.h" #include "HealthThermometerService.h" #include "hts221.h" #define UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL 0 BLEDevice ble; DigitalOut led1(p1); DigitalOut led2(p2); const static char DEVICE_NAME[] = "BLEThermo"; static const uint16_t uuid16_list[] = {GattService::UUID_BATTERY_SERVICE, GattService::UUID_DEVICE_INFORMATION_SERVICE, GattService::UUID_HEALTH_THERMOMETER_SERVICE,}; static volatile bool triggerSensorPolling = false; void disconnectionCallback(Gap::Handle_t handle, Gap::DisconnectionReason_t reason) { ble.startAdvertising(); // restart advertising } void onConnectionCallback(Gap::Handle_t handle, Gap::addr_type_t peerAddrType, const Gap::address_t peerAddr, const Gap::ConnectionParams_t *params) { #if UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL #define MIN_CONN_INTERVAL 250 /**< Minimum connection interval (250 ms) */ #define MAX_CONN_INTERVAL 350 /**< Maximum connection interval (350 ms). */ #define CONN_SUP_TIMEOUT 6000 /**< Connection supervisory timeout (6 seconds). */ #define SLAVE_LATENCY 4 Gap::ConnectionParams_t gap_conn_params; gap_conn_params.minConnectionInterval = Gap::MSEC_TO_GAP_DURATION_UNITS(MIN_CONN_INTERVAL); gap_conn_params.maxConnectionInterval = Gap::MSEC_TO_GAP_DURATION_UNITS(MAX_CONN_INTERVAL); gap_conn_params.connectionSupervisionTimeout = Gap::MSEC_TO_GAP_DURATION_UNITS(CONN_SUP_TIMEOUT); gap_conn_params.slaveLatency = SLAVE_LATENCY; ble.updateConnectionParams(handle, &gap_conn_params); #endif /* #if UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL */ } void periodicCallback(void) { led1 = !led1; /* Do blinky on LED1 while we're waiting for BLE events */ triggerSensorPolling = true; } float tempCelsius = 25.50; float humi = 55; int humiMax = 100; int main(void) { led2 = 0; led1 = 0; if (hts221_init()) { HTS221_Calib(); Ticker ticker; ticker.attach(periodicCallback, 1); ble.init(); ble.onDisconnection(disconnectionCallback); #if UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL ble.onConnection(onConnectionCallback); #endif /* #if UPDATE_PARAMS_FOR_LONGER_CONNECTION_INTERVAL */ HealthThermometerService ThermoService(ble, tempCelsius , HealthThermometerService::LOCATION_EAR); BatteryService battery(ble); DeviceInformationService deviceInfo(ble, "Cyntec", "Combo module", "SN1", "hw-rev1", "fw-rev1", "soft-rev1"); /* Setup advertising. */ /* Setting advertising string*/ ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)uuid16_list, sizeof(uuid16_list)); ble.accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_TAG); ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); /* Setting advertising parameters*/ ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); ble.setAdvertisingInterval(1000); ble.setAdvertisingTimeout(0x1e); //Timeout, stop advertising after 30sec ble.startAdvertising(); while (true) { if (triggerSensorPolling && ble.getGapState().connected) { triggerSensorPolling = false; HTS221_ReadTempHumi(&tempCelsius, &humi); ThermoService.updateTemperature(tempCelsius); } else { ble.waitForEvent(); } } } else { while(true) { led2 = !led2; wait(1); } } }