Hello We have a custom PCB layout with GPIO35, GPIO36, GPIO37 and GPIO38 wired to two external ISM radio chips that we want to program with these pins. I can control GPIO35 but not the other 3. I know they are: e. Accessible via sysfs/Legato only. f. Only available in Group A variants; this pin …

I found the problem. It was a chip connected to the I2C with pin as a low output. I2C works again now but be question is still what exactly is the I2C used for inside the WP?

Using GPIO36-38 on WP7607

Legato Application Framework

nilsa November 13, 2019, 8:20am 11

Will check with sierra.

Btw: check your response in this thread. You are missing MCU version here as well…?

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Using GPIO36-38 on WP7607

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