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nRF51822 BLE project for TMP102 temperature sensor
Dependencies: BLE_API TMP102 mbed nRF51822
Diff: main.cpp
- Revision:
- 2:b935358da5ba
- Parent:
- 1:790c863a9ebd
- Child:
- 3:3eda308b78e6
diff -r 790c863a9ebd -r b935358da5ba main.cpp --- a/main.cpp Wed Jul 15 03:28:13 2015 +0000 +++ b/main.cpp Fri Jul 17 08:46:31 2015 +0000 @@ -21,26 +21,42 @@ #include "ble/DiscoveredService.h" #include "TMP_nrf51/TMP_nrf51.h" - - BLE ble; - +TMP_nrf51 tempSensor; DigitalOut alivenessLED(LED1, 1); -TMP_nrf51 tempSensor; +static bool triggerTempValueRead = true; -bool triggerLedCharacteristic = false; - -uint8_t ADV_INFO[6] = {0xFE, 0xFE, 0x00, 0x00, 0x00, 0x00}; /* Special character || temperature value */ -uint8_t fNewTempValue; - -void periodicCallback(void) { - alivenessLED = !alivenessLED; /* Do blinky on LED1 while we're waiting for BLE events */ - fNewTempValue = 1; +void periodicCallback(void) +{ + /* Do blinky on LED1 while we're waiting for BLE events */ + alivenessLED = !alivenessLED; + triggerTempValueRead = true; } - +void temperatureValueAdvertising(void) +{ + TMP_nrf51::tmpSensorValue_t tempVal; + /* Read a new temperature value */ + tempVal = tempSensor.get(); + printf("Temp is %f\r\n", tempVal); + + /* Stop advertising and clear the payload if in advertising state */ + if((ble.gap().getState()).advertising == 1) { + ble.gap().stopAdvertising(); + ble.gap().clearAdvertisingPayload(); + } + /* Setup advertising. */ + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::GENERIC_THERMOMETER); + ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, (uint8_t *)&tempVal, sizeof(TMP_nrf51::tmpSensorValue_t)); + ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED); + ble.gap().setAdvertisingInterval(500); -int main(void) { + ble.gap().startAdvertising(); +} + +int main(void) +{ Ticker ticker; /* Refresh temperature value every 2 seconds */ ticker.attach(periodicCallback, 2); @@ -48,26 +64,9 @@ ble.init(); while (true) { - if (fNewTempValue) { - float tempVal; - tempVal = tempSensor.get(); - memcpy(&ADV_INFO[2], &tempVal, 4); /* 4 bytes left for tempVal */ - printf("temp is %f\r\n", tempVal); - - if((ble.gap().getState()).advertising == 1) { - ble.gap().stopAdvertising(); - ble.gap().clearAdvertisingPayload(); - } - /* Setup advertising. */ - ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); - ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::UNKNOWN); - ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::MANUFACTURER_SPECIFIC_DATA, (uint8_t *)ADV_INFO, sizeof(ADV_INFO)); - ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_NON_CONNECTABLE_UNDIRECTED); - ble.gap().setAdvertisingInterval(500); - - ble.gap().startAdvertising(); - - fNewTempValue = 0; + if (triggerTempValueRead) { + temperatureValueAdvertising(); + triggerTempValueRead = false; } ble.waitForEvent(); }