Coby Levy Posted October 3, 2020 Share Posted October 3, 2020 hi everyone, I'm running latest Armbian 20.08.1 Buster with Linux 5.8.5-sunxi on a Nanopi Neo Core. I cannot understand why I cant turn GPIOA0 on\off, can't configure it as output. I have no problem with any other GPIOs, just this one. command i'm using: gpio mode 0 output gpio write 0 1 I managed to make the GPIO as Output using this command, but still no go - the output cannot be set. echo 0 > /sys/class/gpio/export echo out > '/sys/class/gpio/gpio0/direction' dmesg don't show any errors. I checked H3 documents, there's no conflict in the mux with other GPIOs, and just to be sure i turned UART everything off (UARTs, i2c, i2c, etc..). could someone please guide me? ty. 0 Quote Link to comment Share on other sites More sharing options...
martinayotte Posted October 3, 2020 Share Posted October 3, 2020 1 hour ago, Coby Levy said: could someone please guide me? What is the output provided by the command "cat /sys/kernel/debug/gpio" ? 0 Quote Link to comment Share on other sites More sharing options...
Coby Levy Posted October 3, 2020 Author Share Posted October 3, 2020 hi, thank you for your reply. this is the output (it shows a proper toggles). gpiochip0: GPIOs 0-223, parent: platform/1c20800.pinctrl, 1c20800.pinctrl: gpio-0 ( |sysfs ) out hi gpio-10 ( |nanopi:blue:status ) out lo gpio-166 ( |cd ) in lo ACTIVE LOW gpio-204 ( |usb0_id_det ) in hi IRQ but I think I figured out what's the problem is, Apparently - the GPIO is malfunction, I might burned it. I tested it with a new installation, and did the same on another board I have here. thank you for your help, Topic can be closed. 0 Quote Link to comment Share on other sites More sharing options...
martinayotte Posted October 4, 2020 Share Posted October 4, 2020 20 hours ago, Coby Levy said: Apparently - the GPIO is malfunction, I might burned it. That is a possibility ... 0 Quote Link to comment Share on other sites More sharing options...
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