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decode - Pin number to Letter
GPIOs in Linux
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GPIOs in Linux
Getting the state of GPIO in linux
You need to add
CONFIG_DEBUG_FS=y
into your kernel .config file. After that you can run
mount -t debugfs debugfs /sys/kernel/debug
To view the state of all the available GPIO pins type
cat /sys/kernel/debug/tegra_gpio
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2yr ago