/**************************************************************************************************
* @fn HalIRTempTurnOn
*
* @brief Turn the sensor on
*
* @return none
**************************************************************************************************/
void HalIRTempTurnOn(void)
{
HalDcDcControl(ST_IRTEMP,true);
HalIRTempSelect();
if (HalSensorWriteReg(TMP006_REG_ADDR_CONFIG, configSensorOn, IRTEMP_REG_LEN))
{
irtSensorState = TMP006_IDLE;
}
}
/**************************************************************************************************
* @fn HalIRTempTurnOff
*
* @brief Turn the sensor off
*
* @return none
**************************************************************************************************/
void HalIRTempTurnOff(void)
{
HalIRTempSelect();
if (HalSensorWriteReg(TMP006_REG_ADDR_CONFIG, configSensorOff, IRTEMP_REG_LEN))
{
irtSensorState = TMP006_OFF;
}
HalDcDcControl(ST_IRTEMP,false);
}
/**************************************************************************************************
* @fn HalHumiExecMeasurementStep
*
* @brief Execute measurement step
*
* @return none
*/
bool HalHumiExecMeasurementStep(uint8 state)
{
HalHumiSelect();
switch (state)
{
case 0:
// Turn on DC-DC control
HalDcDcControl(ST_HUMID,true);
// Start temperature read
success = HalHumiWriteCmd(SHT21_CMD_TEMP_T_NH);
break;
case 1:
// Read and store temperature value
if (success)
{
success = HalHumiReadData(buf, DATA_LEN);
// Start for humidity read
if (success)
{
success = HalHumiWriteCmd(SHT21_CMD_HUMI_T_NH);
}
}
break;
case 2:
// Read and store humidity value
if (success)
{
success = HalHumiReadData(buf+DATA_LEN, DATA_LEN);
}
// Turn of DC-DC control
HalDcDcControl(ST_HUMID,false);
break;
}
return success;
}
/**************************************************************************************************
* @fn HalIRTempRead
*
* @brief Read the sensor voltage and sensor temperature registers
*
* @param Voltage and temperature in raw format (2 + 2 bytes)
*
* @return TRUE if valid data
**************************************************************************************************/
bool HalIRTempRead(uint8 *pBuf)
{
uint16 v;
uint16 t;
bool success;
if (irtSensorState != TMP006_DATA_READY)
{
return FALSE;
}
HalIRTempSelect();
// Read the sensor registers
success = HalSensorReadReg(TMP006_REG_ADDR_VOLTAGE, (uint8 *)&v,IRTEMP_REG_LEN );
if (success)
{
success = HalSensorReadReg(TMP006_REG_ADDR_TEMPERATURE, (uint8 *)&t,IRTEMP_REG_LEN );
}
if (success)
{
// Store values
pBuf[0] = HI_UINT16( v );
pBuf[1] = LO_UINT16( v );
pBuf[2] = HI_UINT16( t );
pBuf[3] = LO_UINT16( t );
}
// Turn off sensor
if (HalSensorWriteReg(TMP006_REG_ADDR_CONFIG, configSensorOff, IRTEMP_REG_LEN))
{
irtSensorState = TMP006_OFF;
}
HalDcDcControl(ST_IRTEMP,false);
return success;
}
