31 lines
551 B
Bash
Executable File
31 lines
551 B
Bash
Executable File
#!/bin/bash
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set -e
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GPIO_DIR="/sys/class/gpio"
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if [ ! -d "${GPIO_DIR}" ] ; then
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echo -e "ERROR: Missing GPIO directory ${GPIO_DIR}"
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fi
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cd "${GPIO_DIR}"
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if [ "$#" != 2 ] ; then
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echo "Usage: $0 <gpio_no> <value>"
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exit 1
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fi
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gpio_no="$1"
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gpio_name="gpio${gpio_no}"
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value="$2"
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direction="$(cat ${gpio_name}/direction)"
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if [ "${direction}" != "out" ] ; then
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echo "Current direction is not in, can't set output pin!"
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fi
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echo "Setting output pin ${gpio_name} to value ${value}"
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echo ${value} | sudo tee "${GPIO_DIR}/${gpio_name}/value"
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exit 0
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