UART0, UART1 and I2C0 utilization and Initialization

[mexco]

Hi, I need to use UART0, UART1 and I2C0 in my application. I initialized these in overlay file (attached). When, debug is run, it is observed that the I2C binding is not successful see attached image file. I am using UART0 and UART1 in asynchrounous mode.  The zypher.dts fie also is attached. 

8176.bms_nrf5340_cpuapp.overlay5023.zephyr.dts  

[Sigurd Hellesvik]

Hi

See this answer and nRF5340 application core Peripheral instantiation.

Regards,
Sigurd Hellesvik

[mexco]

Dear Hellesvik, you pointed through the links that TWIM and UARTE have same ID and address space. Therefore, how to do instantiaiton of such Peripherals ? Should instantiaiton be done in Kernel or Programitacally ? If say UART0 has been instantiated in Kernel, then how to disable it and enable I2C0 programitically ? After completiotion of I2C0 transmit/ receive task, how to enabke UART0 again ? I2C0 is to be used as TWIM.

[Sigurd Hellesvik]

Hi

You should be able to do enable multiple peripherals with the same ID and switch between them in your code.

On how to do this, see nRF5340 Documentation on Peripherals with shared ID and the Peripheral Resource Sharing (PRS).

Is this what you were looking for?

Regards,
Sigurd Hellesvik

[mexco]

Hi Hellsvik, I looking for Zephyr API etc to enable / disbale peripherals woth shared ID and Address space so as to implement in nRF Connect SDK.

[Sigurd Hellesvik]

Hi

I have not been able to find any such API.

Likely you will have to disable and enable the peripherals manually when you change between them.

You might also need to enable the PERIPHERAL_RESOURCE_SHARING_ENABLED, see This DevZone case.

Regards,
Sigurd Hellesvik