When and where does RPMsg RTOS Layer process data

[jingyangxie]

When I read the manual<< RPMsg RTOS Layer User's Guide>>,It says the original RPMsg API is not convenient,and it's more natural and convenient to have a block sequential API ,which is not available in the RPMsg API.the advantages of the RTOS-aware extension of RPMsg API are the following:

• No data processing in the interrupt context
• Blocking receive API
• ....

How does the RPMsg RTOS Layer work  and the advantages embody?

[igorpadykov]

Hi jingyang

one can look at linux i.MX platform-related code in ..arch/arm/mach-imx/imx_rpmsg.c

and Figure 1.3.1: RPMsg send/receive mechanisms attached RPMSG RTOS

Layer User's Guide.

Best regards

igor

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[jingyangxie]

Hi,igorpadykov

    In freescale BSP 4.1.15,RPMsg works in kernel as a module(.ko),and the demo(pingpong) don't receive any datas from other source ,the datas it send is produced by itself,So how does the RPMsg receive data from user application and How can I transport datas between A9 user applition and M4 user application ?

    Looking forward your answer,thanks!