BMP180 and BLE
Dependencies: BLE_API mbed nRF51822
Fork of WeatherStation by
main.cpp
- Committer:
- phivari
- Date:
- 2018-01-10
- Revision:
- 6:25ed8e2df02e
- Parent:
- 5:fe4888cc60cc
File content as of revision 6:25ed8e2df02e:
#define I2C_SDA p29 #define I2C_SCL p28 #include "mbed.h" #include "BLE.h" #include "WeatherService.h" #include "BMP180.h" float temperature1; float pressure; BLE ble; DigitalOut okLED(LED1); DigitalOut errLED(LED2); DigitalOut instrumentsPower(p30); BMP180 bmp180; const static char DEVICE_NAME[] = "Weather Station"; static const uint16_t serviceList[] = { GattService::UUID_ENVIRONMENTAL_SERVICE }; static volatile bool triggerSensorPolling = false; void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) { /* Restart Advertising on disconnection*/ ble.gap().startAdvertising(); } void blink(void) { // statusLED = !statusLED; triggerSensorPolling = true; } void updateFromBMP180() { uint8_t c = bmp180.readByte(BMP180_ADDRESS, BMP180_WHO_AM_I); printf("BMP-180 is 0x%x\n\r", c); printf("BMP-180 should be 0x55\n"); if(c == 0x55) { printf("BMP-180 online\n"); printf("Calibrating BMP-180..."); bmp180.BMP180Calibration(); printf("done\n"); } else { printf("BMP-180 unreachable\n"); return; } temperature1 = (float)bmp180.BMP180GetTemperature()/10.0f; pressure = (float)bmp180.BMP180GetPressure(); } int main(void) { printf("Start\n"); okLED = 1; errLED = 1; Ticker ticker; ticker.attach(blink, 5); ble.init(); ble.gap().onDisconnection(disconnectionCallback); /* Setup weather service. */ WeatherService weatherService(ble); /* setup advertising */ ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED | GapAdvertisingData::LE_GENERAL_DISCOVERABLE); ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_16BIT_SERVICE_IDS, (uint8_t *)serviceList, sizeof(serviceList)); ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::UNKNOWN); ble.gap().accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LOCAL_NAME, (uint8_t *)DEVICE_NAME, sizeof(DEVICE_NAME)); ble.gap().setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); ble.gap().setAdvertisingInterval(1000); /* 1000ms */ ble.gap().startAdvertising(); while (true) { if (triggerSensorPolling && ble.getGapState().connected) { okLED = 1; triggerSensorPolling = false; instrumentsPower = 1; wait(1); updateFromBMP180(); instrumentsPower = 0; float temperature = (temperature1)/ 2; printf("Temp1: %.1f ºC \n", temperature1); printf("Temp Avg.: %.1f ºC \n", temperature); printf("Pressure: %.3f Pa \n", pressure); printf("---\n"); weatherService.updateTemperature(temperature); weatherService.updatePressure(pressure); } else { ble.waitForEvent(); } } }