When GPIO is set to I?C mode, Schmitt Trigger is disabled by default. Users have to set GPIO Input Type Control to enable the Schmitt Trigger.
For example, in the NUC240 series, GPA_MFP8 and GPA_MFP9 need to be set to I?C mode.
Then, enable the Schmitt Trigger of GPA_TYPE8 and GPA_TYPE9.
How to use the Schmitt Trigger function when GPIO is switched to I?C mode?
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