nrf52840 Radio Co-Processor with STM32L486 host processor

Question

I have the next system perfectly working: 
 
 nRF52840 working as NCP to get OpenThread protocol. 
 STM32L486 as a host with a FreeRTOS 
 The communication between both is via UART working with SPINEL

I want to implement multiprotocol support (OpenThread + BLE). I have discovered your nRF Connect SDK v2.1.2 but I have the next problems/questions: 
 
 1º) The only sample to implement NCP is with Zephyr ? 
 2º) Is this sample what i have to implement to support multiprotocol? 
 3º) Which BLE sample can I use to support multiprotocol? 
 4º) Is spinel implemented in any sample of the previously listed? 
 
 Thanks

Sigurd Hellesvik · Accepted Answer

Hi, 
 JuanAlm said: Anyway I need an option with NCP and these don't support it, right? 
 That is right, but you can use the multiprotocol-configurations from either of these to add multiprotocol to the Zephyr NCP sample. 
 I built and flashed a nRF52840DK with the Zephyr NCP sample . I were able to control this using spinel-cli.py on a linux PC. But since it uses spinel, I would guess the microcontroller host would also be able to control it. 
 I did not do the merge though, you will have to that yourself. 
 JuanAlm said: What option do Nordic offer to me if I need an NCP co-processor and my host is a microcontroller? 
 See the above answer for my suggestion to do NCP. 
 Another solution is to use the nRF52840 not as a co-processor, but as a fully functional microcontroller with OpenThread support. It has a Arm cortex-M4 core and a good selection of peripherals after all. Then you can use an interface of your choosing (SPI/I2C/UART) to communicate between the STM32 and nRF52840. 
 JuanAlm said: In the hypothetical case of being able to implement RCP, if I want to implement CLI sample... Do I need a linux host to stablish a command line communication with the co-processor? 
 I do not understand this question. Can you elaborate a bit? 
 Regards, Sigurd Hellesvik

nrf52840 Radio Co-Processor with STM32L486 host processor

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