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author | Alex Ong <the.onga@gmail.com> | 2019-01-04 09:39:14 +0100 |
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committer | Alex Ong <the.onga@gmail.com> | 2019-01-04 09:39:14 +0100 |
commit | 47c91fc7f75ae0a477e55b687aa0fc30da0a283c (patch) | |
tree | 65ad39452748ff2e6d4a83ce54ede6ca22c9ada9 /docs/feature_ps2_mouse.md | |
parent | ac9b88e8ccbbf38762871504cd827ff0d941c426 (diff) | |
parent | 563ce3f225d981ce460c12ca5130dfe47af41df0 (diff) | |
download | qmk_firmware-47c91fc7f75ae0a477e55b687aa0fc30da0a283c.tar.gz qmk_firmware-47c91fc7f75ae0a477e55b687aa0fc30da0a283c.tar.xz |
Merge branch 'master' of https://github.com/qmk/qmk_firmware
Diffstat (limited to 'docs/feature_ps2_mouse.md')
-rw-r--r-- | docs/feature_ps2_mouse.md | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/docs/feature_ps2_mouse.md b/docs/feature_ps2_mouse.md index 909406e7d..01e2cc63d 100644 --- a/docs/feature_ps2_mouse.md +++ b/docs/feature_ps2_mouse.md @@ -6,6 +6,24 @@ To hook up a Trackpoint, you need to obtain a Trackpoint module (i.e. harvest fr There are three available modes for hooking up PS/2 devices: USART (best), interrupts (better) or busywait (not recommended). +### The Cirtuitry between Trackpoint and Controller + +To get the things working, a 4.7K drag is needed between the two lines DATA and CLK and the line 5+. + +``` + + DATA ----------+--------- PIN + | + 4.7K + | +MODULE 5+ --------+--+--------- PWR CONTROLLER + | + 4.7K + | + CLK ------+------------ PIN +``` + + ### Busywait Version Note: This is not recommended, you may encounter jerky movement or unsent inputs. Please use interrupt or USART version if possible. |