SK-AM64B: noRTOS and Linux project

Renato Faria Iida

Prodigy 80 points

Part Number: SK-AM64B

I used the example of the shared memory

https://git.ti.com/cgit/rpmsg/rpmsg_char_zerocopy/

The R5f are all using the FreeRTOS and

I notice the other examples like the ipc_rpmsg_echo_linux are all FreeRTOS.

I need to adapt the R5f part to be noRTS.

So my strategy is just to adapt a nortos project to run with linux.

My first test was to adapt the ipc_rpmsg_echo (C:\ti\mcu_plus_sdk_am64x_08_06_00_45\examples\drivers\ipc\ipc_rpmsg_echo\am64x-sk\r5fss1-0_nortos)

and test the echo with the linux client

My main modification was to change the

makefile_ccs_bootimage_gen

and add the lines

$(RM) $(PROFILE)/am64-main-r5f0_1-fw

$(STRIP) -o=$(PROFILE)/am64-main-r5f0_1-fw $(OUTFILE)

So I update the symbolic link but the firmware did not started

Also I updated the memory map linker.cmd based on zerocopy

I check and i not using the UART

over 2 years ago

0 Nick Saulnier over 2 years ago

TI__Guru** 103210 points

Hello Renato,

Please change just one thing at a time to make it easier for you to debug what is going on. i.e., do NOT change an MCU+ example from FreeRTOS to NORTOS, and then also change the code from regular RPMsg_Echo to RPMsg_echo_zerocopy, without testing. First change to NORTOS. Once that is working, then you can try making other changes.

Another note: ipc_rpmsg_echo was NOT designed to run with Linux. You would want to start with using ipc_rpmsg_echo_linux instead.

These FAQs will be helpful:

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1230201/faq-am6442-am64x-how-do-i-port-ipc-examples-to-rtos-projects-from-no-rtos-projects

https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1193620/faq-am62x-am64x-how-to-allow-linux-to-load-m4f-r5f-firmware-by-adding-a-resource-table

Regards,

Nick

0 Renato Faria Iida over 2 years ago in reply to Nick Saulnier

Prodigy 80 points

Hello Nick

I agree with you that my strategy was not good. What I need it just adapt the

https://git.ti.com/cgit/rpmsg/rpmsg_char_zerocopy/tree/rtos/am64x-evm/r5fss0-1_freertos

to a noRTOS version.

Reading the example , the main difference is to remove the

xTaskCreateStatic and

TaskP_Params_init(&taskParams);

TaskP_construct(&gIpcTask[0], &taskParams);

and directly call the functions related to the task were creating.

The first link that you send do the opposite but do not mention those issues.

Also, the method #1 that you write on second link need to mention to enable IPC fro Linux that it is the text box in the IPC screen.

Is there any else I need to change to make the example noRTOS ?

Thanks for the support

Renato

+1 Swargam Anil over 2 years ago in reply to Renato Faria Iida

TI__Mastermind 48686 points

Hello Renato,

If you need an IPC example on NORTOS,

Already IPC examples were available on NORTOS; why can't you use them?

If you just remove the below API, then the project won't convert it to NORTOS since this project has RTOS library files.

Renato Faria Iida said:
xTaskCreateStatic and

TaskP_Params_init(&taskParams);

TaskP_construct(&gIpcTask[0], &taskParams);

and directly call the functions related to the task were creating.

A good idea is that either you can use direct IPC NORTOS examples from MCU+SDK or take a NORTOS project and make syscfg changes as per the RTOS project and compile it.

C:\ti\mcu_plus_sdk_am64x_09_00_00_31\examples\drivers\ipc\ipc_rpmsg_echo\am64x-evm

Regards,

S.Anil.

0 Renato Faria Iida over 2 years ago in reply to Swargam Anil

Prodigy 80 points

Hello Anil,

The main thing is a NoRTOS with linux interface. The example ipc_rpmsg_echo_linux that Nick suggested only have FreeRTOS.

I started doing exactly what you are describing , i manage to change the echo example to work with Linux based on comments and link from Nick .

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SK-AM64B: noRTOS and Linux project