Hi Champs,
I'd like to clarify the following situation. I have configured GPIO for external interrupt generation. Therefore the GPIO pin needs to be configured as input. Now the User's guide states the following:
" The direction of the GPIO pin does not need to be input when using the pin to generate
the interrupt and EDMA event. When the GPIO pin is configured as input, transitions
on the pin trigger interrupts and EDMA events. When the GPIO pin is configured as
output, software can toggle the GPIO output register to change the pin state and in turn
trigger the interrupt and EDMA event."
Now my question is if I configure the GPIO pin as output does it output buffer actually drive high/low?
Background is that the GPIO pin used for interrupt generation will be connected to a MCU/FPGA's output on the board, which means if you want to trigger the GPIO interrupt from the DSP itself like described in the User's Guide you'd potentially have two outputs driving against each other.
Kind regards,
one and zero