add FIFO functions.
ADXL375_i2c.cpp
- Committer:
- Sigma884
- Date:
- 2018-11-14
- Revision:
- 0:46fcf349bdca
- Child:
- 1:91bcb4ada70c
File content as of revision 0:46fcf349bdca:
#include "ADXL375_i2c.h" ADXL375_i2c :: ADXL375_i2c(I2C &userI2C, ALT_ADDRESS LOW_HIGH){ if(LOW_HIGH == ALT_ADDRESS_LOW){ ADXL375_I2C_READ = ADXL375_I2C_LOW_READ; ADXL375_I2C_WRITE = ADXL375_I2C_LOW_WRITE; ADXL375_I2C_ADDRESS = ADXL375_I2C_LOW_ADDRESS; } else if(LOW_HIGH == ALT_ADDRESS_HIGH){ ADXL375_I2C_READ = ADXL375_I2C_HIGH_READ; ADXL375_I2C_WRITE = ADXL375_I2C_HIGH_WRITE; ADXL375_I2C_ADDRESS = ADXL375_I2C_HIGH_ADDRESS; } i2c = &userI2C; i2c -> frequency(400000); char tx[2]; tx[0] = ADXL375_BW_RATE_REG; tx[1] = ADXL375_3200HZ; i2c -> write(ADXL375_I2C_WRITE, tx, 2); char rx[2]; rx[0] = ADXL375_DATA_FORMAT_REG; rx[1] = 0x0B; i2c -> write(ADXL375_I2C_WRITE, rx, 2); char x[2]; x[0] = ADXL375_OFSX_REG ; x[1] = 0xFE; i2c -> write(ADXL375_I2C_WRITE, x, 2); char y[2]; y[0] = ADXL375_OFSY_REG ; y[1] = 0xFE; i2c -> write(ADXL375_I2C_WRITE, y, 2); char z[2]; z[0] = ADXL375_OFSZ_REG ; z[1] = 0x00; i2c -> write(ADXL375_I2C_WRITE, z, 2); singleByteWrite(ADXL375_POWER_CTL_REG, 0x08); offset_x = offset_y = offset_z = 0.0f; } char ADXL375_i2c :: singleByteRead(char address){ char tx = address; char output; i2c -> write(ADXL375_I2C_WRITE, &tx, 1); i2c -> read(ADXL375_I2C_READ, &output, 1); return output; } void ADXL375_i2c :: singleByteWrite(char address, char data){ char tx[2]; tx[0] = address; tx[1] = data; i2c -> write(ADXL375_I2C_WRITE, tx, 2); } void ADXL375_i2c :: multiByteRead(char address, char* output, int size){ i2c -> write(ADXL375_I2C_WRITE, &address, 1); i2c -> read(ADXL375_I2C_READ, output, size); } void ADXL375_i2c :: getOutput(float* output){ char buffer[6]; short int data[3]; multiByteRead(ADXL375_DATAX0_REG, buffer, 6); data[0] = (int)buffer[1] << 8 | (int)buffer[0]; data[1] = (int)buffer[3] << 8 | (int)buffer[2]; data[2] = (int)buffer[5] << 8 | (int)buffer[4]; output[0] = (float)data[0] / 20.0f - offset_x; output[1] = (float)data[1] / 20.0f - offset_y; output[2] = (float)data[2] / 20.0f - offset_z; } int ADXL375_i2c :: whoAmI(){ char who_am_i = singleByteRead(ADXL375_DEVID_REG); if(who_am_i == 0xE5){ return 1; } else{ return -1; } } void ADXL375_i2c :: offset(float x, float y, float z){ offset_x = x; offset_y = y; offset_z = z; } void ADXL375_i2c :: setDataRate(char rate){ char buff = singleByteRead(ADXL375_BW_RATE_REG); buff &= 0x10; buff |= rate; singleByteWrite(ADXL375_BW_RATE_REG, buff); }