mangOH Red GPIO23 behavior

IoT Modules WP Series
1

Hi

I’m trying to use the GPIO23 of the mangOH Red Development board as an output. This pin has an unpredictable behavior during the boot phase. Sometimes it remains at low level but sometimes it goes to high level after the system init phase. Mind that this is random, I cannot determine when/how this pin behaves. Is this pin used by the core or wp7607 for any indication purpose? How can I reserve this GPIO for my own use?

Best Regards

Vasco

2

How do you set up this goio?
Did you set it with at+wiocfg ?
are you measuring pin13 of CN307?

You need to set AT+WIOCFG=23,16,0,0,1,0,0
after that reboot the device.

echo 23 > /sys/class/gpio/export
echo out > /sys/class/gpio/gpio23/direction

3

Hi

How do you set up this goio?
Did you set it with at+wiocfg ?

  • I didn’t set this gpio. I just observed its behavior

are you measuring pin13 of CN307?

  • Yes, I am.

You need to set AT+WIOCFG=23,16,0,0,1,0,0
after that reboot the device.

  • Is this a permanent setting?

Thanks for your reply

4

I think it is permanent setting