34 lines
967 B
Bash
34 lines
967 B
Bash
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#!/bin/bash
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# shellcheck source=meta-ampere/meta-jade/recipes-ampere/platform/ampere-utils/gpio-defs.sh
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source /usr/sbin/gpio-defs.sh
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function gpio_number() {
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GPIO_BASE=$(cat /sys/class/gpio/gpiochip"$GPIO_CHIP0_BASE"/base)
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echo $((GPIO_BASE + $1))
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}
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# Configure GPIO as output and set its value
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function gpio_configure_output() {
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gpioId=$(gpio_number "$1")
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echo "$gpioId" > /sys/class/gpio/export
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echo out > /sys/class/gpio/gpio"${gpioId}"/direction
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echo "$2" > /sys/class/gpio/gpio"${gpioId}"/value
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echo "$gpioId" > /sys/class/gpio/unexport
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}
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function gpio_get_val() {
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gpioId=$(gpio_number "$1")
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echo "$gpioId" > /sys/class/gpio/export
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cat /sys/class/gpio/gpio"$gpioId"/value
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echo "$gpioId" > /sys/class/gpio/unexport
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}
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# Configure GPIO as input
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function gpio_configure_input() {
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gpioId=$(gpio_number "$1")
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echo "$gpioId" > /sys/class/gpio/export
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echo "in" > /sys/class/gpio/gpio"${gpioId}"/direction
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echo "$gpioId" > /sys/class/gpio/unexport
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}
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