Hi @Juraj ,
Thanks for checking this. I do not understand however, why when I log the pins from Arduino IDE sketches, they are the following:
10:19:54.546 -> MOSI:8
10:19:54.546 -> MISO:10
10:19:54.546 -> SCK:9
10:19:54.546 -> SS:4
10:19:54.546 -> NINA_GPIO0:30
10:19:54.546 -> NINA_RESETN:31
10:19:54.546 -> NINA_ACK:35
(as if Nina was connected to SPI0).
The same goes for the schematics (available here: Arduino MKR WiFi 1010 — Arduino Official Store):
I have changed the SERCOM to sercom4 (without changing the pins), but the program is still stuck waiting for a high level on NINA_ACK.
Could you tell me what pins on the ATSAMD21G18A correspond to the values from the header file (namely 26, 27, 28, 29)?