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labsw/: added low-pass filters to button input (with help from Joerg Reisenweber)

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Werner Almesberger
2011-09-10 20:35:23 -03:00
parent 6190dbe261
commit bdaff51ad3
3 changed files with 201 additions and 47 deletions
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labsw/LOG
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@@ -221,6 +221,8 @@ To do: debounce buttons (in software) before accepting a state change.
- added external pull-ups to IN_* and to buttons (so that we can turn
off the internal pull-ups and thus avoid sneak current through the
opto-coupler LEDs from VBUS via the pull-ups into VDD)
- added low-pass filters to button inputs, to suppress interferences,
e.g., from load being switched (with help from Joerg Reisenweber)
Pending:
- widen column cavities by 0.2 mm on each side