Hi,
Please double check the following:
- Check the proper functionality of USB cable.
- Verify on which micro USB port is being connected the i.MX6UL base board: The one next to the standard Host port is the OTG port of the i.MX, while the one next to the power switch is the USB-to-serial converter.
- Ensure that power supply is connected and providing 5V, and ensure turning on the base board with power switch.
- Verify the boot configuration switches of the CPU board, in order to allow a correct booting, and also verify the proper locking of the SD card socket.
- Ensure that booting SD card is properly working and that it was flashed with the correct image for i.MX6UL.
Hope this will be useful for you.
Best regards!
/Carlos
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