static ZEND_MSHUTDOWN_FUNCTION(zend_accelerator)
{
(void)type; /* keep the compiler happy */
UNREGISTER_INI_ENTRIES();
accel_shutdown(TSRMLS_C);
return SUCCESS;
}
//enable accelerometer for single sample, no interrupt
void accel_enable_sample(void)
{
uint8_t i2cbuffer[4];
accel_shutdown(); //reset accel
//Initialize I2C master
i2c_init(I2C_SCL_RATIO(1), i2cbuffer, 4);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG1, LIS3DH_50HZ | LIS3DH_LP | LIS3DH_ENX | LIS3DH_ENY | LIS3DH_ENZ);
//original stuff for init below:
//I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG1, LIS3DH_50HZ | LIS3DH_LP | LIS3DH_ENX | LIS3DH_ENY | LIS3DH_ENZ);
}
//enable accelerometer for pedometer
void accel_enable_fifo(void)
{
uint8_t i2cbuffer[4];
//QPRINTF("Configuring FIFO...");
accel_shutdown(); //reset accel
//Initialize I2C master
i2c_init(I2C_SCL_RATIO(1), i2cbuffer, 4);
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG1, LIS3DH_50HZ | LIS3DH_LP | LIS3DH_ENX | LIS3DH_ENY | LIS3DH_ENZ); //turn on XYZ, low power, 50Hz
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_FIFO_CTRL_REG, LIS3DH_FIFO_MODE | ACCEL_FIFO_DEPTH); //fifo mode, watermark length 10, Send to inerrupt to INT1
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG5, LIS3DH_FIFO_EN | LIS3DH_LIR_INT1); //Enable FIFO
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG3, LIS3DH_FIFO_WM | LIS3DH_INT1_EN | LIS3DH_FIFO_OVERRUN); //Enable FIFO watermark interrupt 1
I2C_BYTE_WRITE(LIS3DH_ADDR, LIS3DH_CTRL_REG2, LIS3DH_HPF_EN); //enalbe high pass filter for pedometer, disable for better value range on all XYZ axis
//I2C_BYTE_READ(LIS3DH_ADDR, LIS3DH_HP_FILTER_RESET); //reset high pass filter zero level to current
//QPRINTF("Done\r\n");
}