neorv32/sw/image_gen/uart_upload.sh

59 lines
1.9 KiB
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#!/usr/bin/env bash
set -e
# Simple script to upload executable via bootloader
if [ $# -ne 2 ]
then
echo "Upload image via serial port (UART) to the NEORV32 bootloader."
echo "Reset processor before starting the upload."
echo "Usage: [sudo] sh uart_upload.sh <serial port> <NEORV32 executable>"
echo "Example: sudo sh uart_upload.sh /dev/ttyS6 path/to/project/neorv32_exe.bin"
exit
fi
# configure serial port
stty -F "$1" 19200 -hup raw -echo -echoe -echok -echoctl -echoke -crtscts cs8 -cstopb noflsh clocal cread
# trigger fast upload mode and get response
exec 3<$1 # redirect serial output to fd 3
cat <&3 > uart_upload.response.dat & # redirect serial output to file
PID=$! # save pid to kill cat
printf "u" > $1 # send upload command to serial port
sleep 0.5s # wait for bootloader response
kill $PID # kill cat process
exec 3<&- # free fd 3
# check response
if ! grep -Fq "Awaiting neorv32_exe.bin" uart_upload.response.dat;
then
echo "Bootloader response error."
echo "Reset processor before starting the upload."
rm -f uart_upload.response.dat
exit
fi
# send executable and get response
echo -n "Uploading... "
exec 3<$1 # redirect serial output to fd 3
cat <&3 > uart_upload.response.dat & # redirect serial output to file
PID=$! # save pid to kill cat
cat "$2" > "$1" # send executable to serial port
sleep 3s # wait for bootloader response
kill $PID # kill cat process
exec 3<&- # free fd 3
# check response
if ! grep -Fq "OK" uart_upload.response.dat;
then
echo "Upload error."
rm -f uart_upload.response.dat
exit
fi
rm -f uart_upload.response.dat
echo "Done."