reform

commit aab54cc27ef9b22a6f6f0a7a5827e956cd40f3d8
parent 857c82eaea125ba4eda54da88f288fbd3b08bb54
Author: minute <lukas@mntre.com>
Date:   Mon, 19 Feb 2024 19:09:05 +0000

Merge branch 'lpc-fw-flash.sh' into 'master'

reform2-lpc-fw/flash.sh: make script interactive

See merge request reform/reform!45
Diffstat:
M
reform2-lpc-fw/flash.sh
 | 
81
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++-------

1 file changed, 74 insertions(+), 7 deletions(-)
diff --git a/reform2-lpc-fw/flash.sh b/reform2-lpc-fw/flash.sh
@@ -1,11 +1,78 @@
-#!/bin/bash
+#!/bin/sh
 
-set -e
+set -eu
 
-# replace the x with the drive that LPC actually shows up as (check dmesg -w when plugging in)
-#
-#mount /dev/sdx /mnt
-dd if=bin/firmware.bin of="/mnt/firmware.bin" conv=nocreat,notrunc
+if [ ! -e ./bin/firmware.bin ]; then
+	echo "./bin/firmware.bin doesn't exist" >&2
+	exit 1
+fi
+
+if [ "$(id -u)" -ne 0 ]; then
+	echo "you need to run this as root (for example by using sudo)" >&2
+	exit 1
+fi
+
+disk="/dev/disk/by-id/usb-NXP_LPC1XXX_IFLASH_ISP-0:0"
+
+get_disk_property() {
+	property="$1"
+	if [ "$(udevadm --version)" -lt 250 ]; then
+		# no udevadm --property before version 250
+		udevadm info --query=property "$disk" | sed -ne "s/^$property=//p"
+	else
+		udevadm info --query=property --property="$property" --value "$disk"
+	fi
+}
+
+if [ ! -e "$disk" ]; then
+	echo 'Make sure that the battery is disconnected.' >&2
+	echo 'Connect power to the mainboard via the barrel jack connector.' >&2
+	echo 'Set the DIP switch LPCPROG to “ON”.' >&2
+	echo 'Press the button LPCRESET.' >&2
+	echo 'Connect the USB cable.' >&2
+fi
+
+if [ "$(udevadm --version)" -lt 251 ]; then
+	echo 'Press the Enter key once you are ready' >&2
+	# shellcheck disable=SC2034
+	read -r enter
+else
+	echo 'Waiting for the disk to appear...' >&2
+	udevadm wait --settle "$disk"
+fi
+
+if [ "$(get_disk_property "ID_MODEL_ID")" != "000b" ]; then
+	echo "unexpected model id" >&2
+	exit 1
+fi
+if [ "$(get_disk_property "ID_VENDOR_ID")" != "1fc9" ]; then
+	echo "unexpected vendor id" >&2
+	exit 1
+fi
+if [ "$(get_disk_property "ID_MODEL")" != "LPC1XXX_IFLASH" ]; then
+	echo "unexpected model" >&2
+	exit 1
+fi
+if [ "$(get_disk_property "ID_VENDOR")" != "NXP" ]; then
+	echo "unexpected vendor" >&2
+	exit 1
+fi
+
+MOUNTPOINT="$(mktemp --tmpdir --directory reform-lpc-fw.XXXXXXXXXX)"
+trap 'umount $MOUNTPOINT' EXIT INT TERM
+mount "$disk" "$MOUNTPOINT"
+
+dd if=bin/firmware.bin of="$MOUNTPOINT/firmware.bin" conv=nocreat,notrunc
 sync
-umount "/mnt"
+umount "$MOUNTPOINT"
+trap - EXIT INT TERM
+
+echo "Firmware successfully flashed." >&2
+echo "Unplug the Micro—USB cable." >&2
+
+if [ "$(udevadm --version)" -ge 251 ]; then
+	udevadm wait --removed "$disk"
+fi
 
+echo 'Set the DIP switch LPCPROG to “OFF”.' >&2
+echo 'Press the button LPCRESET.' >&2