SPI Master Clock mapping problem

[shay]

Hi,

I am trying to use the SPI with a sensor on our PCB. 

Based on the SPIM example, I changed the used pins to match our configuration, where the clock (spi_config.sck_pin) is routed to pin GPIO-9 (P0.09).

For some reason, when setting the SPIM to use this pin, there is no clock signal we can see there. When setting the sck_pin to another pin, such as 3, 22 or 31 we can see the clock signal there.

Is there any restriction for using GPIO 9 (for the clock or any other SPIM signal)? Please note that we are not using NFC in our project.

Any advice will be appreciated.

Thanks

Shay

[Kenneth]

Hi,

I suspect that pin 9 and 10 are configured as NFC, for instance by default the projects may not have defined CONFIG_NFCT_PINS_AS_GPIOS.

See system_nrf52.c for details on CONFIG_NFCT_PINS_AS_GPIOS.

You may also need to call 'nrfjprog --eraseall' once after changing the define.

Best regards,
Keneth