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fw/atusb: add extra steps needed for HULUSB in README 

To preapre the firmware image and flash it onto the device some
different steps are needed as the bootloader uses Atmels DFU variant.

Document the use of dfu-programmer to get the firmware onto the device.
This commit is contained in:
Stefan Schmidt 2017-09-13 18:03:02 +02:00
parent ea23c905d3
commit 805db6ebf5
1 changed files with 10 additions and 0 deletions
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atusb/fw/README
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@ -40,6 +40,16 @@ Requires a very recent toolchain, because ATmega32U2 is relatively new.
this operation can fail with a message like "No DFU capable USB device
found". Just retry, and it will eventually get through.
HULUSB notes:
-------------
To prepare and flash the firmware on a HULUSB device some additional steps are
needed;
avr-objcopy -O ihex -R .signature -R .fuse -R .eeprom hulusb.elf hulusb.hex
dfu-programmer at90usb1287 flash hulusb.hex
dfu-programmer at90usb1287 reset
--------------------------
Making the toolchain: