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TMS320F280025C: GPIO19/18 cannot be used as Digital output

LIU LIU
Intellectual 410 points

Part Number: TMS320F280025C
Other Parts Discussed in Thread: C2000WARE

Tool/software:

Based on Table 3-6 of TRM, I set XTALCR.OSCOFF=1 and XTALCR.SE=0.

Then I cannot config GPIO18/19 to OUTPUT by setting GPADIR and GPADAT. The GPIO18/19 output always is 1.