DS ConfigTool - Port PCR ID

[speed999]

Hello NXP team 

One question for pin PCR id. For the S32K144 PWM example project,  pin22 - PTS15 is configured as FTM0_CH0 muxing mode. But in port_cfg.h, FTM0_CH0 can be enabled for three port ID - 44, 64, 111.  Why is 111 the correct number? How can pin 22 be mapped to port PCR ID 111  in the port config setting of peripheral ?   (I chose 44, 64 while some error is reported and Port attribute is not correct)

#define PORT111_FTM0_CH0 (PORT_ALT2_FUNC_MODE)

[VaneB · Accepted solution]

Hi @speed999

The "PortPin PCR" is a numeric value representing the Port Configuration Register. It can be calculated using the following formula:

PortPin Pcr = PinId + (PortId × 32)

Where:

• PortId is the numeric identifier of the port (e.g., PortA = 0, PortB = 1, PortC = 2, etc.).
• PinId is the index of the selected pin within the port.

For PTD15, the calculation would be:

PortPin Pcr = 15 + (3 × 32) = 111 

BR, VaneB