micropython/stmhal/autoflash

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#!/bin/sh
#
# this script waits for a DFU device to be attached and then flashes it
# it then waits until the DFU mode is exited, and then loops
while true; do
echo "waiting for DFU device..."
while true; do
if lsusb | grep -q DFU; then
break
fi
sleep 1s
done
echo "found DFU device, flashing"
dfu-util -a 0 -D build/flash.dfu
echo "waiting for DFU to exit..."
while true; do
if lsusb | grep -q DFU; then
sleep 1s
continue
fi
break
done
done