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