Device Tree overlay ipc icmsg sample

[dario.sortino]

Hello everyone.

I was trying to integrate the ipc_service sample in my application. It was working all fine and I was able to set up and link the endpoint in my code. I then tried to run a clean build, and I don't know why everything broke: when I try to execute ipc_service_register_endpoint, this happens, the board resets and keeps doing it forever.

 

Thinking that is a matter of memory position, I found out that my compiled devicetree output for the application core has a reserved-memory node like this

reserved-memory {
        #address-cells = <1>;
        #size-cells = <1>;
        ranges;
        sram0_image: image@20000000 {
                reg = <0x20000000 DT_SIZE_K(448)>;
        };

        sram0_s: image_s@20000000 {
                reg = <0x20000000 0x40000>;
        };

        sram0_ns: image_ns@20040000 {
                reg = <0x20040000 0x30000>;
        };

        sram_rx: memory@20078000 {
                reg = <0x20078000 0x8000>;
        };

};

Instead of 

reserved-memory {
        sram_tx: memory@20070000 {
                reg = <0x20070000 0x8000>;
        };

        sram_rx: memory@20078000 {
                reg = <0x20078000 0x8000>;
        };

};

Network core side instead, the devicetree seems ok, but I still encounter the error at endpoint registration time.

I am quite lost and I don't really know how to proceed, since this problem appeared point-blank when I tried to build from zero once again.

[Vidar Berg]

Thanks for sharing your project. It looks like the only problem was that you had placed an "idle" loop at the end of main() in your application. It is better to let the program return from main so the Zephyr idle thread can be run.

Fullscreen 4857.diff.diff Download

--- "DemoStation (1)/src/main.c"	2023-02-14 12:10:20.000000000 +0100
+++ DemoStation/src/main.c	2023-02-14 14:56:27.258293905 +0100
@@ -30,9 +30,9 @@
 	//LOG_INF("EP BOUND");
 	k_sem_give(&bound_sem);
 }
-static void ep_recv(void *priv)
+static void ep_recv(const void *data, size_t len, void *priv)
 {
-	printk("Msg received");
+	printk("Msg received\r\n");
     
 }
 
@@ -89,9 +89,5 @@
 
 	k_sem_take(&bound_sem, K_FOREVER);
 
-	while(true){
-
-		__WFE();
-	}
 
 }

UART logs from app and net after applying the changes above:

Ref. regarding idle thread Zephyr:  https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/kernel/services/threads/system_threads.html#system-threads