diff options
Diffstat (limited to 'meta-ampere/meta-jade/recipes-ampere/platform/mtjade-utils/gpio-lib.sh')
-rw-r--r-- | meta-ampere/meta-jade/recipes-ampere/platform/mtjade-utils/gpio-lib.sh | 32 |
1 files changed, 17 insertions, 15 deletions
diff --git a/meta-ampere/meta-jade/recipes-ampere/platform/mtjade-utils/gpio-lib.sh b/meta-ampere/meta-jade/recipes-ampere/platform/mtjade-utils/gpio-lib.sh index 8d1aa61d7..c8721fe97 100644 --- a/meta-ampere/meta-jade/recipes-ampere/platform/mtjade-utils/gpio-lib.sh +++ b/meta-ampere/meta-jade/recipes-ampere/platform/mtjade-utils/gpio-lib.sh @@ -1,31 +1,33 @@ #!/bin/bash + +# shellcheck source=/dev/null source /usr/sbin/gpio-defs.sh function gpio_number() { - GPIO_BASE=$(cat /sys/class/gpio/gpiochip$GPIO_CHIP0_BASE/base) - echo $((${GPIO_BASE} + $1)) + GPIO_BASE=$(cat /sys/class/gpio/gpiochip"$GPIO_CHIP0_BASE"/base) + echo $((GPIO_BASE + $1)) } # Configure GPIO as output and set its value function gpio_configure_output() { - gpioId=$(gpio_number $1) - echo $gpioId > /sys/class/gpio/export - echo out > /sys/class/gpio/gpio${gpioId}/direction - echo $2 > /sys/class/gpio/gpio${gpioId}/value - echo $gpioId > /sys/class/gpio/unexport + gpioId=$(gpio_number "$1") + echo "$gpioId" > /sys/class/gpio/export + echo out > /sys/class/gpio/gpio"${gpioId}"/direction + echo "$2" > /sys/class/gpio/gpio"${gpioId}"/value + echo "$gpioId" > /sys/class/gpio/unexport } function gpio_get_val() { - gpioId=$(gpio_number $1) - echo $gpioId > /sys/class/gpio/export - echo $(cat /sys/class/gpio/gpio$gpioId/value) - echo $gpioId > /sys/class/gpio/unexport + gpioId=$(gpio_number "$1") + echo "$gpioId" > /sys/class/gpio/export + cat /sys/class/gpio/gpio"$gpioId"/value + echo "$gpioId" > /sys/class/gpio/unexport } # Configure GPIO as input function gpio_configure_input() { - gpioId=$(gpio_number $1) - echo $gpioId > /sys/class/gpio/export - echo "in" > /sys/class/gpio/gpio${gpioId}/direction - echo $gpioId > /sys/class/gpio/unexport + gpioId=$(gpio_number "$1") + echo "$gpioId" > /sys/class/gpio/export + echo "in" > /sys/class/gpio/gpio"${gpioId}"/direction + echo "$gpioId" > /sys/class/gpio/unexport } |