Peter Swanson
This library enables users to communicate with the ADXL345 accelerometer through the I2C bus on the mbed. The API names are similar and work nearly the same way as those made in the SPI libraries for the ADXL345.
main.cpp@1:d9412b56f98a, 2011-05-12 (annotated)
- Committer:
- peterswanson87
- Date:
- Thu May 12 01:19:36 2011 +0000
- Revision:
- 1:d9412b56f98a
- Parent:
- 0:d0adb548714f
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| peterswanson87 | 0:d0adb548714f | 1 | #include "ADXL345_I2C.h" |
| peterswanson87 | 0:d0adb548714f | 2 | |
| peterswanson87 | 0:d0adb548714f | 3 | ADXL345_I2C accelerometer(p28, p27); |
| peterswanson87 | 0:d0adb548714f | 4 | Serial pc(USBTX, USBRX); |
| peterswanson87 | 0:d0adb548714f | 5 | |
| peterswanson87 | 0:d0adb548714f | 6 | int main() { |
| peterswanson87 | 0:d0adb548714f | 7 | pc.baud(115200); |
| peterswanson87 | 0:d0adb548714f | 8 | int readings[3] = {0, 0, 0}; |
| peterswanson87 | 0:d0adb548714f | 9 | |
| peterswanson87 | 0:d0adb548714f | 10 | pc.printf("Starting ADXL345 test...\n"); |
| peterswanson87 | 0:d0adb548714f | 11 | wait(.001); |
| peterswanson87 | 0:d0adb548714f | 12 | pc.printf("Device ID is: 0x%02x\n", accelerometer.getDeviceID()); |
| peterswanson87 | 0:d0adb548714f | 13 | wait(.001); |
| peterswanson87 | 0:d0adb548714f | 14 | |
| peterswanson87 | 0:d0adb548714f | 15 | // These are here to test whether any of the initialization fails. It will print the failure |
| peterswanson87 | 0:d0adb548714f | 16 | if (accelerometer.setPowerControl(0x00)){ |
| peterswanson87 | 0:d0adb548714f | 17 | pc.printf("didn't intitialize power control\n"); |
| peterswanson87 | 0:d0adb548714f | 18 | return 0; } |
| peterswanson87 | 0:d0adb548714f | 19 | //Full resolution, +/-16g, 4mg/LSB. |
| peterswanson87 | 0:d0adb548714f | 20 | wait(.001); |
| peterswanson87 | 0:d0adb548714f | 21 | |
| peterswanson87 | 0:d0adb548714f | 22 | if(accelerometer.setDataFormatControl(0x0B)){ |
| peterswanson87 | 0:d0adb548714f | 23 | pc.printf("didn't set data format\n"); |
| peterswanson87 | 0:d0adb548714f | 24 | return 0; } |
| peterswanson87 | 0:d0adb548714f | 25 | wait(.001); |
| peterswanson87 | 0:d0adb548714f | 26 | |
| peterswanson87 | 0:d0adb548714f | 27 | //3.2kHz data rate. |
| peterswanson87 | 0:d0adb548714f | 28 | if(accelerometer.setDataRate(ADXL345_3200HZ)){ |
| peterswanson87 | 0:d0adb548714f | 29 | pc.printf("didn't set data rate\n"); |
| peterswanson87 | 0:d0adb548714f | 30 | return 0; } |
| peterswanson87 | 0:d0adb548714f | 31 | wait(.001); |
| peterswanson87 | 0:d0adb548714f | 32 | |
| peterswanson87 | 0:d0adb548714f | 33 | //Measurement mode. |
| peterswanson87 | 0:d0adb548714f | 34 | |
| peterswanson87 | 0:d0adb548714f | 35 | if(accelerometer.setPowerControl(MeasurementMode)) { |
| peterswanson87 | 0:d0adb548714f | 36 | pc.printf("didn't set the power control to measurement\n"); |
| peterswanson87 | 0:d0adb548714f | 37 | return 0; } |
| peterswanson87 | 0:d0adb548714f | 38 | |
| peterswanson87 | 0:d0adb548714f | 39 | while (1) { |
| peterswanson87 | 0:d0adb548714f | 40 | |
| peterswanson87 | 0:d0adb548714f | 41 | wait(0.1); |
| peterswanson87 | 0:d0adb548714f | 42 | |
| peterswanson87 | 0:d0adb548714f | 43 | accelerometer.getOutput(readings); |
| peterswanson87 | 0:d0adb548714f | 44 | |
| peterswanson87 | 0:d0adb548714f | 45 | |
| peterswanson87 | 0:d0adb548714f | 46 | pc.printf("%i, %i, %i\n", (int16_t)readings[0], (int16_t)readings[1], (int16_t)readings[2]); |
| peterswanson87 | 0:d0adb548714f | 47 | } |
| peterswanson87 | 0:d0adb548714f | 48 | |
| peterswanson87 | 0:d0adb548714f | 49 | } |