| ThuBaNguyen | 7b45282 | 2021-06-06 14:36:07 +0700 | [diff] [blame] | 1 | #!/bin/bash |
| ThuBaNguyen | 3310917 | 2021-07-02 15:39:57 +0700 | [diff] [blame^] | 2 | source /usr/sbin/gpio-defs.sh |
| ThuBaNguyen | 7b45282 | 2021-06-06 14:36:07 +0700 | [diff] [blame] | 3 | |
| 4 | function gpio_number() { |
| ThuBaNguyen | 3310917 | 2021-07-02 15:39:57 +0700 | [diff] [blame^] | 5 | GPIO_BASE=$(cat /sys/class/gpio/gpiochip$GPIO_CHIP0_BASE/base) |
| ThuBaNguyen | 7b45282 | 2021-06-06 14:36:07 +0700 | [diff] [blame] | 6 | echo $((${GPIO_BASE} + $1)) |
| 7 | } |
| 8 | |
| 9 | # Configure GPIO as output and set its value |
| 10 | function gpio_configure_output() { |
| 11 | gpioId=$(gpio_number $1) |
| 12 | echo $gpioId > /sys/class/gpio/export |
| 13 | echo out > /sys/class/gpio/gpio${gpioId}/direction |
| 14 | echo $2 > /sys/class/gpio/gpio${gpioId}/value |
| 15 | echo $gpioId > /sys/class/gpio/unexport |
| 16 | } |
| 17 | |
| 18 | function gpio_get_val() { |
| 19 | gpioId=$(gpio_number $1) |
| 20 | echo $gpioId > /sys/class/gpio/export |
| 21 | echo $(cat /sys/class/gpio/gpio$gpioId/value) |
| 22 | echo $gpioId > /sys/class/gpio/unexport |
| 23 | } |
| 24 | |
| 25 | # Configure GPIO as input |
| 26 | function gpio_configure_input() { |
| 27 | gpioId=$(gpio_number $1) |
| 28 | echo $gpioId > /sys/class/gpio/export |
| 29 | echo "in" > /sys/class/gpio/gpio${gpioId}/direction |
| 30 | echo $gpioId > /sys/class/gpio/unexport |
| 31 | } |