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add ability to switch on/off serial output

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This commit is contained in:
Alex Bradbury 2014-09-02 17:25:58 +01:00
parent 2401980d1b
commit 667f035157
1 changed files with 32 additions and 4 deletions
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36
raspi-config
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@ -422,6 +422,32 @@ do_i2c() {
fi
}
do_serial() {
CURRENT_STATUS="yes" # assume ttyAMA0 output enabled
if ! grep -q "^T.*:.*:respawn:.*ttyAMA0" /etc/inittab; then
CURRENT_STATUS="no"
fi
whiptail --yesno "Would you like a login shell to be accessible over serial? Current setting: $CURRENT_STATUS" 20 60 2
RET=$?
if [ $RET -eq 1 ]; then
sed -i /etc/inittab -e "s|^.*:.*:respawn:.*ttyAMA0|#&|"
sed -i /boot/cmdline.txt -e "s/console=ttyAMA0,[0-9]\+ //"
whiptail --msgbox "Serial is now disabled" 20 60 1
elif [ $RET -eq 0 ]; then
sed -i /etc/inittab -e "s|^#\(.*:.*:respawn:.*ttyAMA0\)|\1|"
if ! grep -q "^T.*:.*:respawn:.*ttyAMA0" /etc/inittab; then
printf "T0:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100\n" >> /etc/inittab
fi
if ! grep -q "console=ttyAMA0" /boot/cmdline.txt; then
sed -i /boot/cmdline.txt -e "s/root=/console=ttyAMA0,115200 root=/"
fi
whiptail --msgbox "Serial is now enabled" 20 60 1
else
return $RET
fi
}
disable_raspi_config_at_boot() {
if [ -e /etc/profile.d/raspi-config.sh ]; then
rm -f /etc/profile.d/raspi-config.sh
@ -793,8 +819,9 @@ do_advanced_menu() {
"A4 SSH" "Enable/Disable remote command line access to your Pi using SSH" \
"A5 SPI" "Enable/Disable automatic loading of SPI kernel module (needed for e.g. PiFace)" \
"A6 I2C" "Enable/Disable automatic loading of I2C kernel module" \
"A7 Audio" "Force audio out through HDMI or 3.5mm jack" \
"A8 Update" "Update this tool to the latest version" \
"A7 Serial" "Enable/Disable shell and kernel messages on the serial connection" \
"A8 Audio" "Force audio out through HDMI or 3.5mm jack" \
"A9 Update" "Update this tool to the latest version" \
3>&1 1>&2 2>&3)
RET=$?
if [ $RET -eq 1 ]; then
@ -807,8 +834,9 @@ do_advanced_menu() {
A4\ *) do_ssh ;;
A5\ *) do_spi ;;
A6\ *) do_i2c ;;
A7\ *) do_audio ;;
A8\ *) do_update ;;
A7\ *) do_serial ;;
A8\ *) do_audio ;;
A9\ *) do_update ;;
*) whiptail --msgbox "Programmer error: unrecognized option" 20 60 1 ;;
esac || whiptail --msgbox "There was an error running option $FUN" 20 60 1
fi