SS pin for MKR GSM 1400?

Hardware MKR Family MKRGSM1400
1

Everything I see related to SPI pins for the arduino says pin 10 is for SS. On the MKR GSM 1400, pin 10 is listed as MISO, and I don't see any SS pins. Also, everything I see related to this board and SPI talk about the SD card module, which isn't relevant to my project.

How to use SPI for the MKR GSM 1400?

MOSI - D8
SCK - D9
MISO - D10
SS - ??

Thanks in advance!

2

I think you'll have to dig into the datasheet for the SAMD21 processor and go from there as to how to group 4 pins into an SPI port.

Page 510, section 27.

3

Thanks for the link. I see on page 516, section 27.6.2.6.1 (and .2) it says "SS can be assigned to any general purpose I/O pin", but I'm still not sure how to tell SPI which pin I'm using. I can use D8-10 for the other pins.

4

I assign
D6 DC
D7 CS
D8 MOSI
D9 SCK
D10 MISO
sucessfully on the MKR 1400.
CS = SS (ChipSelect = SlaveSelect :o :smiling_imp: )