this is program how build nRF51822 to get ADXL345 data
Dependencies: BLE_API mbed nRF51822
Fork of ADXL345_I2C by
Diff: main.cpp
- Revision:
- 2:99e00e9c5035
- Parent:
- 0:d0adb548714f
- Child:
- 3:1749778af065
--- a/main.cpp Thu May 12 01:19:36 2011 +0000 +++ b/main.cpp Sat Dec 02 00:56:53 2017 +0000 @@ -1,10 +1,48 @@ #include "ADXL345_I2C.h" +#include "mbed.h" +#include "ble/BLE.h" + +#include "ble/services/UARTService.h" + +#define NEED_CONSOLE_OUTPUT 0 /* Set this if you need debug messages on the console; + * it will have an impact on code-size and power consumption. */ + +#if NEED_CONSOLE_OUTPUT +#define DEBUG(...) { printf(__VA_ARGS__); } +#else +#define DEBUG(...) /* nothing */ +#endif /* #if NEED_CONSOLE_OUTPUT */ - ADXL345_I2C accelerometer(p28, p27); + ADXL345_I2C accelerometer(p7, p30); Serial pc(USBTX, USBRX); + BLEDevice ble; + DigitalOut led1(LED1); + UARTService *uartServicePtr; + + void disconnectionCallback(const Gap::DisconnectionCallbackParams_t *params) +{ + DEBUG("Disconnected!\n\r"); + DEBUG("Restarting the advertising process\n\r"); + ble.startAdvertising(); +} + +void onDataWritten(const GattWriteCallbackParams *params) +{ + if ((uartServicePtr != NULL) && (params->handle == uartServicePtr->getTXCharacteristicHandle())) { + uint16_t bytesRead = params->len; + DEBUG("received %u bytes\n\r", bytesRead); + ble.updateCharacteristicValue(uartServicePtr->getRXCharacteristicHandle(), params->data, bytesRead); + } +} + +void periodicCallback(void) +{ + led1 = !led1; +} + int main() { - pc.baud(115200); + pc.baud(9600); int readings[3] = {0, 0, 0}; pc.printf("Starting ADXL345 test...\n"); @@ -12,38 +50,46 @@ pc.printf("Device ID is: 0x%02x\n", accelerometer.getDeviceID()); wait(.001); - // These are here to test whether any of the initialization fails. It will print the failure - if (accelerometer.setPowerControl(0x00)){ - pc.printf("didn't intitialize power control\n"); - return 0; } - //Full resolution, +/-16g, 4mg/LSB. - wait(.001); - - if(accelerometer.setDataFormatControl(0x0B)){ - pc.printf("didn't set data format\n"); - return 0; } - wait(.001); - - //3.2kHz data rate. - if(accelerometer.setDataRate(ADXL345_3200HZ)){ - pc.printf("didn't set data rate\n"); - return 0; } - wait(.001); - - //Measurement mode. - - if(accelerometer.setPowerControl(MeasurementMode)) { - pc.printf("didn't set the power control to measurement\n"); - return 0; } + //Go into standby mode to configure the device. + accelerometer.setPowerControl(0x00); + + //Full resolution, +/-16g, 4mg/LSB. + accelerometer.setDataFormatControl(0x0B); + + //3.2kHz data rate. + accelerometer.setDataRate(ADXL345_3200HZ); + + //Measurement mode. + accelerometer.setPowerControl(0x08); + + led1 = 1; + Ticker ticker; + ticker.attach(periodicCallback, 1); + + DEBUG("Initialising the nRF51822\n\r"); + ble.init(); + ble.onDisconnection(disconnectionCallback); + ble.onDataWritten(onDataWritten); + + /* setup advertising */ + ble.accumulateAdvertisingPayload(GapAdvertisingData::BREDR_NOT_SUPPORTED); + ble.setAdvertisingType(GapAdvertisingParams::ADV_CONNECTABLE_UNDIRECTED); + ble.accumulateAdvertisingPayload(GapAdvertisingData::SHORTENED_LOCAL_NAME, + (const uint8_t *)"BLE UART", sizeof("BLE UART") - 1); + ble.accumulateAdvertisingPayload(GapAdvertisingData::COMPLETE_LIST_128BIT_SERVICE_IDS, + (const uint8_t *)UARTServiceUUID_reversed, sizeof(UARTServiceUUID_reversed)); + + ble.setAdvertisingInterval(1000); /* 1000ms; in multiples of 0.625ms. */ + ble.startAdvertising(); + + UARTService uartService(ble); + uartServicePtr = &uartService; while (1) { - + ble.waitForEvent(); wait(0.1); - accelerometer.getOutput(readings); - - - pc.printf("%i, %i, %i\n", (int16_t)readings[0], (int16_t)readings[1], (int16_t)readings[2]); + pc.printf("%i, %i, %i\n", (int16_t)readings[0], (int16_t)readings[1], (int16_t)readings[2]); } }