84 lines
2.6 KiB
Markdown
84 lines
2.6 KiB
Markdown
With a bit of prep work, this can be achieved relatively simply
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First, create a file, `addwlan.sh`, in the boot partition - contents at the end of the answer
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in `cmdline.txt` on the boot sector you'll want to add (it's a single line by the way)
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systemd.run=/boot/firmware/addwlan.sh systemd.run_success_action=reboot systemd.unit=kernel-command-line.target
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To the end of the line in `cmdline.txt`
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It should end up looking like
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console=tty1 root=PARTUUID=****** rootfstype=ext4 fsck.repair=yes rootwait cfg80211.ieee80211_regdom=** systemd.run=/boot/firmware/addwlan.sh systemd.run_success_action=reboot systemd.unit=kernel-command-line.target
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The \*\*\* will be something unique to your situation, DO NOT CHANGE
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This is the contents of addwlan.sh in the boot partition:
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Note:
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* NAME: this will be the name of the `.nmconnection` file created and its `ID` \- note that `UUID` is generated
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* SSID: the SSID you want to connect to
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* PRIORITY: use negative for higher priority - FYI: default for wifi connections is zero
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* HIDDEN: set to `true` if it is hidden
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* PASS: leave blank for open AP
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* PLAIN: set to 1 if you add the password in plain text, the code will convert it to a passphrase using `wpa_passphrase` otherwise use `PLAIN=0`
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---
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#!/bin/bash
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# ---- configure connection - change as appropriate
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NAME=<connectionName>
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SSID=<SSID>
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PRIORITY=0
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HIDDEN=[true|false]
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PASS=<password>
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PLAIN=1
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# ---- end configure connection
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CONNFILE=/etc/NetworkManager/system-connections/${NAME}.nmconnection
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UUID=$(uuid -v4)
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if [ ! -z "${PASS}"]; then
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if [ $PLAIN -eq 1 ]; then
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PSK="$(wpa_passphrase ${SSID} ${PASS} | grep -T "psk" | grep -v '"' | cut -d= -f 2)"
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else
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PSK="${PASS}"
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fi
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fi
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cat <<- EOF >${CONNFILE}
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[connection]
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id=${NAME}
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uuid=${UUID}
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type=wifi
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autoconnect-priority=${PRIORITY}
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[wifi]
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mode=infrastructure
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ssid=${SSID}
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hidden=${HIDDEN}
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[ipv4]
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dns-priority=100
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method=auto
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[ipv6]
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dns-priority=50
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addr-gen-mode=default
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method=auto
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[proxy]
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EOF
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if [ ! -z "${PASS}" ]; then
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cat <<- EOF >>${CONNFILE}
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[wifi-security]
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key-mgmt=wpa-psk
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psk=${PSK}
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EOF
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fi
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chmod 600 ${CONNFILE}
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sed -i 's| systemd.run=/boot/firmware/addwlan.sh.*||g' /boot/firmware/cmdline.txt
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exit 0
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Put the SD card back in the pi and reboot. Note, there will be a second reboot once the config is written, so be patient.
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Tested to work on Pi 4 running latest Raspberry Pi Bookworm - should work if you installed 64bit bookworm or trixie - no guarantees if you went for 32 bit |