scripts/avr-prog

#!/bin/bash

# Copyright 2022 The ChromiumOS Authors
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.

set -e

if ! command -v dfu-programmer >/dev/null ; then
    echo "Missing dfu-programmer" >&2
    echo "Hint: sudo apt install dfu-programmer" >&2
    exit 1
fi

PROJECT_ROOT=$(realpath "$(dirname "${BASH_SOURCE[0]}")"/..)

cd "${PROJECT_ROOT}/avr"
if [ -f intlisten.hex ] && ! command -v avr-gcc >/dev/null ; then
    echo "Missing avr-gcc, using precompiled AVR firmware" >&2
else
    make intlisten.hex
fi
"${PROJECT_ROOT}/scripts/avr-reset"
# It takes some time for the kernel to probe the USB device after reset.
sleep 0.7
dfu-programmer atmega16u4 erase
dfu-programmer atmega16u4 flash intlisten.hex
dfu-programmer atmega16u4 start