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ADXL345 Accelerometer
The ADXL345 is a small, thin, low power, 3-axis accelerometer with high resolution (13-bit) measurement at up to ±16 g. Digital output data is formatted as 16-bit twos complement and is accessible through either a SPI (3- or 4-wire) or I2C digital interface.
Hello World!¶
Import program
00001 #include "ADXL345.h" 00002 00003 ADXL345 accelerometer(p5, p6, p7, p8); 00004 Serial pc(USBTX, USBRX); 00005 00006 int main() { 00007 00008 int readings[3] = {0, 0, 0}; 00009 00010 pc.printf("Starting ADXL345 test...\n"); 00011 pc.printf("Device ID is: 0x%02x\n", accelerometer.getDevId()); 00012 00013 //Go into standby mode to configure the device. 00014 accelerometer.setPowerControl(0x00); 00015 00016 //Full resolution, +/-16g, 4mg/LSB. 00017 accelerometer.setDataFormatControl(0x0B); 00018 00019 //3.2kHz data rate. 00020 accelerometer.setDataRate(ADXL345_3200HZ); 00021 00022 //Measurement mode. 00023 accelerometer.setPowerControl(0x08); 00024 00025 while (1) { 00026 00027 wait(0.1); 00028 00029 accelerometer.getOutput(readings); 00030 00031 //13-bit, sign extended values. 00032 pc.printf("%i, %i, %i\n", (int16_t)readings[0], (int16_t)readings[1], (int16_t)readings[2]); 00033 00034 } 00035 00036 }
Wiring¶
ADXL345 Signal Name | mbed pin |
Vcc | Vout |
Gnd | Gnd |
SDA | p5 |
SDO | p6 |
SCL | p7 |
CS | p8 |
API¶
[Not found]
Library¶
[Not found]