GPIO Over ride pins

[Javvaji_Mani]

Hello,

We are using NXP “MIMXRT1042XJM5B” device in one of our design. For booting the device we used SPI flash.

Configured Boot pins for Other peripherals like I2C (C8- GPIO_B0_04 ,And A8- GPIO_B0_05) and  (GPIO_B0_06 to GPIO_B0_14 pin’s we used for control signals of the peripherals.

Now I need to debug the board, whenever I am going to flash the device I will be isolating the below GPIO Boot Overrides pins through series resistor it can be flashing.

Can you pls suggest any other method to config this pins as I2C and Control pins and parallel I can debug the device through J-Tag.

[Omar_Anguiano]

If want to use the boot_cfg for other use without having to isolate them then I suggest you using boot from fuses. In that mode, the boot_cfg value will be read from fuses instead of the assigned GPIO pins. In that way you can set these pins as I2C without isolating the to ensure the reset state of pin for proper booting.

Best regards,
Omar