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    Troubleshot on custom board

    I updated the PCB and ordered a new batch, my understanding is that there isn't much to do. The other pins haven't cause any issue by following the guideline linked on the bootloader page . If I run into any other problem, I'll let you know Custom Teensy4.1 Additional IO Mapping Possible
  2. G

    Troubleshot on custom board

    And the experts at NXP recommend to leave it floating... just my luck. Yep, I'll have to print a new batch of PCB, I'll be more careful
  3. G

    Troubleshot on custom board

    I did some testing. Turns out that the DQS is daisy chained through that pin. If I change the registry of AD_B1_09 instead, I can use the pin normally. IOMUXC_FLEXSPIA_DQS_SELECT_INPUT = 0b1; IOMUXC_SW_MUX_CTL_PAD_GPIO_AD_B1_09 = 0b10000; However, I also need AD_B1_09.... Any solution?
  4. G

    Troubleshot on custom board

    Hi all, I built a custom board based on the Teensy 4.1 I needed more I/O than the OG teensy board could offer and I had to fit the full board in a tight space, so having a teensy mounted to a shield was not an option. The board is working perfectly fine, I did some tests and everything is...
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