Chanh Nguyen | 2fc68eb | 2022-04-28 09:11:28 +0000 | [diff] [blame] | 1 | #!/bin/bash |
| 2 | |
| 3 | # shellcheck disable=SC2154 |
| 4 | # shellcheck source=/dev/null |
| 5 | |
| 6 | # Configure GPIO as output and set its value |
| 7 | AST2600_GPIO_BASE=( |
| 8 | 816 |
| 9 | 780 |
| 10 | ) |
| 11 | |
| 12 | function gpio_configure_output() { |
| 13 | echo "$1" > /sys/class/gpio/export |
| 14 | echo out > /sys/class/gpio/gpio"$1"/direction |
| 15 | echo "$2" > /sys/class/gpio/gpio"$1"/value |
| 16 | echo "$1" > /sys/class/gpio/unexport |
| 17 | } |
| 18 | |
| 19 | function gpio_get_val() { |
| 20 | echo "$1" > /sys/class/gpio/export |
| 21 | cat /sys/class/gpio/gpio"$1"/value |
| 22 | echo "$1" > /sys/class/gpio/unexport |
| 23 | } |
| 24 | |
| 25 | # Configure GPIO as input |
| 26 | function gpio_configure_input() { |
| 27 | echo "$1" > /sys/class/gpio/export |
| 28 | echo "in" > /sys/class/gpio/gpio"$1"/direction |
| 29 | echo "$1" > /sys/class/gpio/unexport |
| 30 | } |
| 31 | |
| 32 | function gpio_name_set() |
| 33 | { |
| 34 | str=$(gpiofind "$1") |
| 35 | #Verify error code when run gpiofind |
| 36 | if [ "$?" == '1' ]; then |
| 37 | echo "Invalid gpio name $1" |
| 38 | else |
| 39 | gpioid=$(echo "$str"|cut -c 9) |
| 40 | offset=$(echo "$str"|cut -d " " -f 2) |
| 41 | gpioPin=$(("$offset" + ${AST2600_GPIO_BASE[$gpioid]})) |
| 42 | gpio_configure_output "$gpioPin" "$2" |
| 43 | fi |
| 44 | } |
| 45 | |
| 46 | function gpio_name_get() |
| 47 | { |
| 48 | str=$(gpiofind "$1") |
| 49 | #Verify error code when run gpiofind |
| 50 | if [ "$?" == '1' ]; then |
| 51 | echo "Invalid gpio name $1" |
| 52 | else |
| 53 | offset=$(echo "$str"|cut -d " " -f 2) |
| 54 | gpioid=$(echo "$str"|cut -c 9) |
| 55 | gpioPin=$(("$offset" + ${AST2600_GPIO_BASE[$gpioid]})) |
| 56 | gpio_get_val "$gpioPin" |
| 57 | fi |
| 58 | } |
| 59 | |
| 60 | function gpio_name_input() |
| 61 | { |
| 62 | str=$(gpiofind "$1") |
| 63 | #Verify error code when run gpiofind |
| 64 | if [ "$?" == '1' ]; then |
| 65 | echo "Invalid gpio name $1" |
| 66 | else |
| 67 | gpioid=$(echo "$str"|cut -c 9) |
| 68 | offset=$(echo "$str"|cut -d " " -f 2) |
| 69 | gpioPin=$(("$offset" + ${AST2600_GPIO_BASE[$gpioid]})) |
| 70 | gpio_configure_input "$gpioPin" |
| 71 | fi |
| 72 | } |