static unsigned char adxl345_reg_multi_read(unsigned char addr, unsigned char n, unsigned char *val)
{
/* send address we're reading from */
if (HalI2CWrite(1, &addr) == 1) {
/* now read data */
return HalI2CRead(n, val);
}
return 0;
}
/**************************************************************************************************
* @fn HalMotionI2cRead
*
* @brief This function implements the I2C protocol to read from the IMU-3000 gyroscope.
*
* input parameters
*
* @param device - which device is being written
* addr - which register to read
* numBytes - number of bytes to read
* pBuf - pointer to buffer to place data
*
* output parameters
*
* None.
*
* @return None.
**************************************************************************************************/
void HalMotionI2cRead( halMotionDevice_t device, uint8 addr, uint8 numBytes, uint8 *pBuf )
{
uint8 localAddr = addr;
/* Send address we're reading from */
HalI2CWrite( HalMotionDeviceAddressTable[device], 1, &localAddr );
/* Now read data */
HalI2CRead( HalMotionDeviceAddressTable[device], numBytes, pBuf );
}
/**************************************************************************************************
* @fn HalSensorReadReg
*
* @brief This function implements the I2C protocol to read from a sensor. The sensor must
* be selected before this routine is called.
*
* @param addr - which register to read
* @param pBuf - pointer to buffer to place data
* @param nBytes - numbver of bytes to read
*
* @return TRUE if the required number of bytes are reveived
**************************************************************************************************/
bool HalSensorReadReg(uint8 addr, uint8 *pBuf, uint8 nBytes)
{
uint8 i = 0;
/* Send address we're reading from */
if (HalI2CWrite(1,&addr) == 1)
{
/* Now read data */
i = HalI2CRead(nBytes,pBuf);
}
return i == nBytes;
}
/**************************************************************************************************
* @fn HalHumiReadData
*
* @brief This function implements the I2C protocol to read from the SHT21.
*
* @param pBuf - pointer to buffer to place data
*
* @param nBytes - number of bytes to read
*
* @return TRUE if the required number of bytes are received
**************************************************************************************************/
static bool HalHumiReadData(uint8 *pBuf, uint8 nBytes)
{
/* Read data */
return HalI2CRead(nBytes,pBuf ) == nBytes;
}
