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preonic-1.0
planck-4.0
0.5.0
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LUFA-111009
LUFA-130901
LUFA-130901-BETA
LUFA-140302
LUFA-140928
LUFA-151115
LUFA-170418
breakpoint_2019_08_30
ergodox_ez-161205
gh60-0.1
planck-4.1
planck-4.2
planck-5.0
planck-6.0
planck-6.1
planck-light-1.0
preonic-2.0
v4.0
${ noResults }
21 lines
1.5 KiB
21 lines
1.5 KiB
In rare circumstances, your keyboard/device can become unwritable, and `dfu-programmer` will give you an error like this:
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Erasing flash... Success
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Checking memory from 0x0 to 0x6FFF... Empty.
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Checking memory from 0x0 to 0x607F... Empty.
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0% 100% Programming 0x6080 bytes...
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[ X ERROR
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Memory write error, use debug for more info.
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Currently the only way to solve this is to [reprogram the chip via ISP](https://www.reddit.com/r/olkb/comments/4rjzen/flashing_error_on_mac_os_x/d52rj8o/). This requires another device to be hooked up to a couple of exposed pins on the PCB. There is a guide on how to do this [here](https://learn.sparkfun.com/tutorials/installing-an-arduino-bootloader), and [this is where things are on the Planck PCB](http://imgur.com/lvbxbHt).
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An example command to flash the board once things are hooked up is:
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avrdude -c usbtiny -p m32u4 -U flash:w:planck_default_rev4.hex
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Research is still being done on why this happens, but here are some cases:
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* [`make -f Makefile.rn42 dfu` and not the dfu-programmer commands worked for @tybenz](https://github.com/tmk/tmk_keyboard/issues/316) - also see [the hhkb keyboard on tmk](https://github.com/tmk/tmk_keyboard/tree/master/keyboard/hhkb)
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* [Doing a force erase works here](https://geekhack.org/index.php?topic=12047.msg1520147#msg1520147)
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* [`dfu-programmer atmega32u4 erase --force` works here as well](https://forum.fhem.de/index.php?topic=29777.0) [DE]
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* [Unresolved, but some data dumps](https://github.com/dfu-programmer/dfu-programmer/issues/29) |