Comp_Temperature(); Description; Actions; Prototype - Infineon SP37 Function Manual

2.7

Comp_Temperature()

2.7.1

Description

This function will convert a previously obtained raw temperature value into a compensated temperature value. This
function can be called after a pressure, acceleration or raw temperature measurement to compensate the raw
temperature. Thus, the current ambient temperature is obtained without taking an extra temperature
measurement.
2.7.2

Actions

• Compensate raw temperature data using calibration data stored in FLASH.
2.7.3

Prototype

unsigned char Comp_Temperature (signed int idata TempRawIn, signed int idata * TempResult)
2.7.4

Inputs

Table 38 Comp_Temperature: Input Parameters
Register / Address
R6(MSB),
R7(LSB)
R5
2.7.5

Outputs

Table 39 Comp_Temperature: Output values
Register/ Address
R7
*Temp_Result
*Temp_Result+1
ROM Library Function Guide
Type Name
signed int TempRawIn
idata
signed int Temp_Result
idata*
Type Name
unsigned char StatusByte
signed int Compensated
Temperature
signed int Raw Temperature
Tire Pressure Monitoring Sensor
Description
Raw measurement value (gathered from
Meas_Pressure() or Meas_Acceleration() or
Raw_Temperature)
Pointer to an integer array in RAM to receive the
measurement result
Description
0000.0000 : Success
B
xxxx.xxx1 : Underflow of Result
B
xxxx.xx1x : Overflow of Result
B
8000 = -256.0 °C
H
0000 = 0.0 °C
H
7FFF = 255.9921875 °C
H
( = 256 °C - 1 LSB where 1 LSB = 1/128 °C)
16 Bit scaled signed ADC Result Value
56
SP37
ROM Library Functions
Revision 1.0, 2011-12-15