Other Parts Discussed in Thread: TPS65950
In Keypad HW mode, can the columns be driven such that only one column is low at a time or are they always low? When configuring the TPS65950 for HW mode and looking at the columns on the scope they are all low and are not being toggled as desired. Our currnet button HW is a matrix configuration so the toggling of the columns is needed. Do we have to use the software scanning mode to toggle the columns? We would prefer to use the HW mode for its added interrupt capability, which seems to be working correct, however we are reading all buttons in a specific row being pressed at once (since the columns are always low).
Thanks,
David