Transmit temperature data via BLE
Dependencies: BLE_API mbed nRF51822
Diff: main.cpp
- Revision:
- 0:ac4c040491f9
- Child:
- 1:d64b82b9d615
--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/main.cpp Thu Feb 05 08:21:34 2015 +0000 @@ -0,0 +1,106 @@ +#include "mbed.h" +#include "BLEDevice.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(Gap::MSEC_TO_ADVERTISEMENT_DURATION_UNITS(1000)); //0x20~0x4000, 0.625ms, 20ms~10.24s + 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); + } + } +} \ No newline at end of file