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| author | Nick Choi <nikchi@users.noreply.github.com> | 2017-05-30 14:17:48 -0400 |
|---|---|---|
| committer | GitHub <noreply@github.com> | 2017-05-30 14:17:48 -0400 |
| commit | 2c9f846608cbf91ce936071372634194745994d0 (patch) | |
| tree | 7fc260baa3bca7ba748117e07fca8aaa186943dd /docs/Memory-write-error,-use-debug-for-more-info.md | |
| parent | 5393bc6f4eee3d3cb83997e5b03d8e5a5cea85d8 (diff) | |
| parent | cb791cf6cdbcd9fd1291f36f6b1a6840753db97f (diff) | |
| download | firmware-2c9f846608cbf91ce936071372634194745994d0.tar.gz firmware-2c9f846608cbf91ce936071372634194745994d0.tar.bz2 firmware-2c9f846608cbf91ce936071372634194745994d0.zip | |
Merge pull request #2 from qmk/master
pull in new qmk changes
Diffstat (limited to 'docs/Memory-write-error,-use-debug-for-more-info.md')
| -rw-r--r-- | docs/Memory-write-error,-use-debug-for-more-info.md | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/docs/Memory-write-error,-use-debug-for-more-info.md b/docs/Memory-write-error,-use-debug-for-more-info.md new file mode 100644 index 000000000..adef2601f --- /dev/null +++ b/docs/Memory-write-error,-use-debug-for-more-info.md @@ -0,0 +1,21 @@ +In rare circumstances, your keyboard/device can become unwritable, and `dfu-programmer` will give you an error like this: + + Erasing flash... Success + Checking memory from 0x0 to 0x6FFF... Empty. + Checking memory from 0x0 to 0x607F... Empty. + 0% 100% Programming 0x6080 bytes... + [ X ERROR + Memory write error, use debug for more info. + +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). + +An example command to flash the board once things are hooked up is: + + avrdude -c usbtiny -p m32u4 -U flash:w:planck_default_rev4.hex + +Research is still being done on why this happens, but here are some cases: + +* [`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) +* [Doing a force erase works here](https://geekhack.org/index.php?topic=12047.msg1520147#msg1520147) +* [`dfu-programmer atmega32u4 erase --force` works here as well](https://forum.fhem.de/index.php?topic=29777.0) [DE] +* [Unresolved, but some data dumps](https://github.com/dfu-programmer/dfu-programmer/issues/29)
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