Unable to Configure SPI 1 with nrf9160ns setting

[Pirate Panda]

I am integrating a sensor on SPI 1 with cellular but device get stuck in CPU idle when first transaction of SPI is made?

I am using nrf9160dk_nrf9160ns as board configuration and CONFIG_SPI and CONFIG_SPI_1 is enabled in project configuration.

I am facing something similar with I2C 1 too. (not using both peripherals at once).

Is there something to do with secure and non secure peripherals.

Any help is appreciated.

Thanks

[Håkon Alseth]

Hi,

 

This could be because of secure region (SPM) enabling the serial drivers uart0 and uart1.

Could you try to add this to the CMakeLists.txt file (just below the cmake_minimum_required(..) line):

if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/spm.conf")
  set(spm_CONF_FILE
    prj.conf
    ${CMAKE_CURRENT_LIST_DIR}/spm.conf
  )
endif()

if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/mcuboot.conf")
  set(mcuboot_CONF_FILE
    prj.conf
    ${CMAKE_CURRENT_LIST_DIR}/mcuboot.conf
  )
endif()

if (EXISTS "${CMAKE_CURRENT_SOURCE_DIR}/${BOARD}.overlay")
  set(mcuboot_DTC_OVERLAY_FILE "${CMAKE_CURRENT_SOURCE_DIR}/${BOARD}.overlay")
endif()

 

Then you create a $(BOARD).overlay (nrf9160dk_nrf9160ns.overlay in this case) file holding:

&uart1 {
    status = "disabled";
};

/* rest of your overlay configurations here */

 

You can also create a file "spm.conf" where you can disable serial if you'd like:

CONFIG_SERIAL=n

You typically want this to enter idle mode with low power consumption.

 

Kind regards,

Håkon

[Pirate Panda]

Hi Håkon,

Thanks for the help. This update has solved the problem.

Best Regards

[Håkon Alseth]

I'm glad to hear this!

Cheers,

Håkon