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Old bootloader #1

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a22f4f0
Update Makefile for old bootloader
lowerclasswarfare Aug 16, 2025
168df58
Update README.md with deploy changes
lowerclasswarfare Aug 16, 2025
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7 changes: 5 additions & 2 deletions Makefile
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Original file line number Diff line number Diff line change
Expand Up @@ -15,9 +15,12 @@ led.o: led.c
avr-gcc $(CFLAGS) -c -o $@ $<

deploy: led.hex
avrdude -F -V -c arduino -p ATMEGA328p -P ${ARDUINO_USB} -b 115200 -U flash:w:led.hex
avrdude -F -V -c arduino -p ATMEGA328p -P ${ARDUINO_USB} -b 115200 -U flash:w:led.hex

deploy_old: led.hex
avrdude -F -V -c arduino -p ATMEGA328p -P ${ARDUINO_USB} -b 57600 -U flash:w:led.hex

clean: FRC
rm -f led.elf led.hex led.o led

FRC:
FRC:
7 changes: 7 additions & 0 deletions README.md
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Expand Up @@ -36,6 +36,13 @@ Then you can upload the program via:
```bash
make deploy
```
If avrdude complains about the programmer not responding, your board might have
the old bootloader.
If this happens to be the case, just run:

```bash
make deploy_old
```

## References

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