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magge

@crispyoz Thanks for all your help!

magge

Product being used : Omega2S+

Firmware version : 0.3.3 b247

Description of the issue and context:

GPIO pin 26 always returns LOW, unlike all other GPIO pins (also including pin 27 also in the
SD-card reader block of pins).

  # omega2-ctrl gpiomux get
  Group i2c - [i2c] gpio
  Group uart0 - uart [gpio]
  Group uart1 - uart [gpio] pwm01
  Group uart2 - uart [gpio] pwm23
  Group pwm0 - pwm [gpio]
  Group pwm1 - pwm [gpio]
  Group refclk - refclk [gpio]
  Group spi_s - spi_s [gpio] pwm01_uart2
  Group spi_cs1 - spi_cs1 [gpio] refclk
  Group i2s - i2s [gpio] pcm
  Group ephy - ephy [gpio]
  Group wled - wled [gpio]

  # gpioctl dirin 26
  Using gpio pin 26.
  # gpioctl dirin 27
  Using gpio pin 27.
  # gpioctl get 26
  Using gpio pin 26.
  Pin 26 is LOW
  # gpioctl get 27
  Using gpio pin 27.
  Pin 27 is HIGH

Expected Behavior

Pin 26 is wired similar to 27 and should be HIGH.

Observed Behavior

Pin 26 is LOW.

Steps to reproduce the issue

Connection:

  3.3V --> R100K --> Omega2S+ pin 26
                  |  
   GND --> C10p --/

What kind of help are you looking for?

I've been searching without luck what I need to do to make sure the software knows to use
pins 22-29 for the SD-card reader as GPIO pins. Or; what I need to uninstall to make
sure those pins are never disturbed by SD-card related software/drivers.

My only guess is that pin 26 reads low because it's somehow used as SD.CLK.

If you can please help me get pin 26 as a plain GPIO pin, very much appreciated.

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