I'm working on the software for a RT1064 design, and I'm having a hard time understanding the (complex) GPIO/MUX/PAD thing....
I have a device connected to LPSPI3, and I need to monitor the level of the LPSPI3 SDI input at some point during initialization of the SPI device.
I initialize the LPSPI3 SDI/SDO and SCK with this (I control the CS signals "manually"):
and this works perfect (I have another device on the SPI bus which I can talk with)
Now, I also need to be able to do:
to monitor the level of the SDI pin.
What kind of initialization do I need to have both the GPIO_AD_B1_13 pin connected to the LPSPI3 SDI and the GPIO1.29 signal ?