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52 lines
848 B
Bash
Executable File
52 lines
848 B
Bash
Executable File
#!/usr/bin/env bash
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###
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#
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# Options Section
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#
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###
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set -u
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set -o pipefail
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###
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#
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# Function Section
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#
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###
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function load_module () {
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MODULE="${1}"
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if ! /usr/sbin/lsmod | /usr/bin/grep --quiet "${MODULE}"; then
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/usr/sbin/modprobe "${MODULE}"
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fi
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}
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###
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#
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# Runtime Environment
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#
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###
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load_module 'i2c_dev'
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load_module 'led_ugreen'
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I2C_DEV=$(/usr/sbin/i2cdetect -l | /usr/bin/grep 'SMBus I801 adapter' | grep --perl-regexp --only-matching 'i2c-\d+')
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if [[ -n "${I2C_DEV}" ]]; then
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DEV_PATH="/sys/bus/i2c/devices/$I2C_DEV/${I2C_DEV/i2c-/}-003a"
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if [[ -d "${DEV_PATH}" ]]; then
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DEV_NAME=$(/usr/bin/cat "${DEV_PATH}/name")
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fi
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if [[ ! -d "${DEV_PATH}" ]]; then
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/usr/bin/echo 'led-ugreen 0x3a' > "/sys/bus/i2c/devices/${I2C_DEV}/new_device"
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elif [[ "${DEV_NAME}" != 'led-ugreen' ]]; then
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exit 1
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fi
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else
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exit 1
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fi
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