Outputs; Table 16 Meas_Pressure: Output Values - Infineon SP37 Function Manual

2.2.5

Outputs

Table 16 Meas_Pressure: Output values
Register/ Address
R7
*(PressResult+0)
*(PressResult+1)
*(PressResult+2)
1) If the pressure measurement result is within the input range for which its accuracy is specified (e.g. 100 kPa - 900 kPa),
then the ADC underflow/overflow condition is due to a measurement failure and the measurement results are not valid.
Otherwise, if the pressure measurement result is outside of this input range, then the ADC underflow/overflow bits and the
pressure measurement results may be ignored.
ROM Library Function Guide
Type Name
unsigned char StatusByte
signed int Compensated
Pressure
signed int Raw Pressure
signed int Raw Temperature
Tire Pressure Monitoring Sensor
Description
0000.0000 : Success
B
xxxx.xxx1 : Underflow of ADC Result
B
xxxx.xx1x : Overflow of ADC Result
B
xxxx.x1xx : Sensor Fault Wire Bond Check
B
xxx1.xxxx : VMIN warning
B
If Input Bit SensorConfig.6[RAW] == 0:
8000 = -2048.0 kPa (Only theoretical)
H
0000 = 0.0 kPa
H
7FFF = 2047.9375 kPa
H
( = 2048 kPa - 1 LSB where 1 LSB = 1/16 kPa)
If Input Bit SensorConfig.6[RAW] == 1:
8000 since no compensation is performed
H
10 Bit ADC Result Value:
0000.00xx.xxxx.xxxx
If Input Bit SensorConfig.6[RAW] == 0:
16 Bit scaled signed ADC Result Value
If Input Bit SensorConfig.6[RAW] == 1:
8000 since no temperature measurement is
H
performed
35
SP37
ROM Library Functions
1)
1)
B
Revision 1.0, 2011-12-15