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| author | tmk <tmk@users.noreply.github.com> | 2014-03-03 17:16:27 -0800 |
|---|---|---|
| committer | tmk <tmk@users.noreply.github.com> | 2014-03-03 17:16:27 -0800 |
| commit | 4464a288a1ab7a0bf7140a2ae6f5e89051c378c7 (patch) | |
| tree | e966c427285126231f5a24333cb23f6d8f0ad340 /FAQ.md | |
| parent | f89362886595570e89017cebdd1416e52d16d6ea (diff) | |
Updated FAQ (markdown)
Diffstat (limited to 'FAQ.md')
| -rw-r--r-- | FAQ.md | 7 |
1 files changed, 7 insertions, 0 deletions
@@ -64,3 +64,10 @@ Without reset circuit you will have inconsistent reuslt due to improper initiali - http://geekhack.org/index.php?topic=50176.msg1127447#msg1127447 - http://www.mikrocontroller.net/attachment/52583/tpm754.pdf + + +## Can't read comlumn of matrix beyond 16 +Use `1UL<<16` intead of `1<<16` in `read_cols()` in **matrix.h** when your columns goes beyond 16. +In C `1` means one of int type which is 16bit in case of AVR so you can't shift left more than 15. You will get unexpected `0` when you say `1<<16`. + +http://deskthority.net/workshop-f7/rebuilding-and-redesigning-a-classic-thinkpad-keyboard-t6181-60.html#p146279
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