Data sharing between two application

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1

Hi FreeRTOS community,

I am looking solution for data sharing (send and receive) from two different application. Let say ‘app1’ will be receiving signal and manipulating data and put in message-queue. Another application ‘app2’ should receive data from message-que and send to CAN-bus.

I thought of using message-queue but it work on same (one) application with two different task. But I need to find two different application communication mechanism(data sharing)?

Please someone help me on this.

Regards,
Vel

2

Hi, by two applications, do you mean two chips both running FreeRTOS?

3

both application will be running on the freeRTOS.
Application1 - will be receiving data from RpcMSG and writing into the queue (CanDataQ)
Application2 - will be reading that CanDataQ and construct can message and send it to can-bus

4

On separate CPUs ? Means do you use a dual core MCU running a separate FreeRTOS application per core ?

5

If both are tasks running on FreeRTOS, you can communicate between the tasks using a queue; I’m not sure I understand what you mean by application in this context.

6

two different application means that app1 = /examples/hello_world (freeRTOS example application) and app2 = examples/drivers/mcan/mcan_loopback_polling (freeRTOS example application). how this two different application can communicate? exchange data/information?

7

If you need to share a queue between two files that you are going to build into your firmware, you can declare the queue in a header file, which you can include in your c files. One of the files will have to declare the queue.