J44 Arduino header UART communication is not working on the MIMXRT1180-EVK Board. earlier, the indicator LEDs near the J44 port used to turn ON/blink during the power-up, but currently the LEDs are not glowing, and UART communication is also not working. could anyone help with this issue?
I have attached both images one before when it was working and the LEDs were glowing and the other one now it is not working and LEDs are not glowing.
Hi @abishekb ,
Thanks for your interest in NXP MIMXRT series!
May I ask which pin on your J44 Arduino you're using? And which LPUART instance are you using?
Based on your connection setup, I suspect it might be LPUART12 (GPIO_AON_15/GPIO_AON_16).
However, in the issue you described, the two LEDs are D6 and D7, and their control pins are GPIO_AD_27 and GPIO_AD_26. These pins are not related to the LPUART you are using. It is possible that other code in your application is reusing them.
In this case, the fact that the LED isn’t lighting up properly indicates that the rest of your application code isn’t executing correctly either. It’s unlikely to be a hardware issue. We recommend erasing the flash memory and then flashing a simple default project from the SDK to test it.
Best regards,
Gavin