I want to use a SAMD21 as SPI master with software control of the SS slave select signal (CTRLB.MSSEN = 0)
One can configure which PADs of the SERCOM peripheral are used for the SCK, MISO and MOSI signals in the CTRLA register. Can one configure the pin for the remaining PAD so that it can be used for the SS signal?
The description of CTRLA.DOPO in the datasheet just says "System configuration" for the Master SS settings, but doesn't say if one can use a PAD belonging to the SERCOM for it. Some examples use an arbitary output pin for SS
Question: Can one configure the remaining PAD as an output in the pin PORT setup?
Thanks in advance for advice