Table 46 Start_Supply_Voltage: Input Parameters; Table 47 Start_Supply_Voltage: Output Values; Start_Supply_Voltage() - Infineon SP37 Function Manual

2.9

Start_Supply_Voltage()

2.9.1 Description
The battery voltage typically shows a significant drop during RF transmission, when a considerable current is
drawn. Calling the monolithic function
because of its execution time.
A set of three functions to allow battery voltage measurement during RF transmission has been implemented;
Start_Supply_Voltage(),
in this particular sequence, and each function is separately described in detail.
Start_Supply_Voltage() enables and configures the ADC, allows settling of the analogue ADC part, and places the
ADC into standby state. It must be called prior to calling the
2.9.2 Actions
• Prepare the ADC and the Supply Voltage Sensor for a measurement
2.9.3 Prototype
unsigned char Start_Supply_Voltage ( void )
2.9.4 Inputs
Table 46 Start_Supply_Voltage: Input Parameters
Register / Address
None
2.9.5 Outputs
Table 47 Start_Supply_Voltage: Output values
Register/ Address
R7
ROM Library Function Guide
Meas_Supply_Voltage()
Trig_Supply_Voltage()
Type Name
--- ---
Type Name
unsigned char Status Byte
Tire Pressure Monitoring Sensor
during RF transmission is often not feasible
and Get_Supply_Voltage(). These functions must be called
Trig_Supply_Voltage()
Description
---
Description
Always returns 0
62
SP37
ROM Library Functions
function.
Revision 1.0, 2011-12-15