First of all, happy new year! Wish you all good luck and happiness!
Here is my story. I will try to make it as clear as possible, so please bear with me. I'm trying to make my self-made boards work with PIC32MZ1024ECM064, and the first step was simple: to make PORTB10 and 11, and PORTC13 high and low every second (like LED blinking example without any LEDs). However, the outputs were both weird (PORTB10 and PORTC13: 0.7-0.8V, PORTB11: 3.3V) and unchanged instead of "blinking".
So I changed the code to only setting those mentioned pins either low or high individually, but the outputs were still the same as before regardless of uploaded programs. It seemed the program didn't work! I used Mikroprog to upload the code onto the PIC via PGD2 and PGC2, and the uploading happened without any errors. I verified the code on-chip using Mikroprog Suite and no differences were found, so the program was indeed uploaded properly and successfully.
I then decided to blink ALL ports (B, C, D and E in a 64-pin PIC) every second, and figured out that the ports in the 1st and 4th quarters did blink, while those in the 2nd and 3rd quarters didn't! (see image). I have 4 boards serving 4 different functions with 4 different layouts, and this happened in all 4. It was very confusing...
- PIC 4 quarters.png (59.36 KiB) Viewed 1108 times
Therefore, I have to conclude that the PIC32MZ1024ECM064 series are just designed badly and broken in that way... Could you guys please advise me on what else I can do to debug the boards? If anyone ever worked with PIC32MZ1024ECM064, could you please confirm whether you find any similar issues and what you have done to fix them? I have spent more than $2000 in manufacturing those boards, so I would love to at least have ideas on what is going on to avoid in the next design.
I attach here the schematic of a board.
Thank you and keen to hear any opinions and recommendations!
