PC: How is a specific PIN set in the processor, should it be input or output? Are the pins open collector?
If I want to set the MISO-61-PC2 pin as an input, how do I do it?
Or is it already set somewhere as an output?
How can I load it? (if pin==1) through which register?
I am considering connecting a pull-up resistor and an optocell there. It would serve as an external trigger (max 12V input). The BNC should be placed next to the power switch, at least for the glass version...
Sometimes it's good to have it. For example, when debugging uP, ext trigger, it is possible to see a specific part of the process, e.g. i2c code