Resource Usage; Table 50 Trig_Supply_Voltage: Input Parameters; Table 51 Trig_Supply_Voltage: Output Values; Table 52 Trig_Supply_Voltage: Resources - Infineon SP37 Function Manual

2.10

Trig_Supply_Voltage()

2.10.1 Description
Trig_Supply_Voltage() is the second part of a set of three functions to measure the battery voltage during RF
transmission. It is called after Start_Supply_Voltage(), and triggers an ADC battery voltage measurement. Upon
the call of this function the ADC resumes from standby, performs a measurement and then goes back to standby,
keeping the result. Typically this function is called by the application immediately after an RF datagram byte is
shifted into SFR RFD to prevent disruption of RF data transmission.
2.10.2 Actions
• Bring ADC from standby to active state
• Measure the supply voltage sensor with ADC
• Place ADC into standby state
2.10.3 Prototype
void Trig_Supply_Voltage ( void )
2.10.4 Inputs
Table 50 Trig_Supply_Voltage: Input Parameters
Register / Address
None
2.10.5 Outputs
Table 51 Trig_Supply_Voltage: Output values
Register/ Address
None
2.10.6

Resource Usage

Table 52 Trig_Supply_Voltage: Resources
Type
Registers
SFR
Stack
1) Two additional bytes, not included here, are needed to call the library function
ROM Library Function Guide
Type Name
--- ---
Type Name
--- ---
Used or Modified
---
---
1)
0 Bytes
Tire Pressure Monitoring Sensor
Description
---
Description
---
64
SP37
ROM Library Functions
Revision 1.0, 2011-12-15