#!/usr/bin/sh

set -e
set -u

case "${1}" in
  install)
    BOOT=$(/usr/bin/grep '/boot' '/etc/fstab' | /usr/bin/mawk '$1 !~ /^#/ && $2 ~ /^[/]/ {print $2}')
    /usr/bin/sed --in-place 's/dtparam=i2c_arm=off/dtparam=i2c_arm=on/' "${BOOT}/config.txt"
    /usr/bin/sed --in-place 's/ console=ttyS1,115200//' "${BOOT}/cmdline.txt"
    /usr/bin/echo '##'
    /usr/bin/echo '##'
    /usr/bin/echo '## Restart the device to load the necessary drivers.'
    /usr/bin/echo '##'
    /usr/bin/echo '##'
  ;;
esac