Hello, I am working on a project using a custom board with the nRF5340 chip and SDK 2.8.0.
In my setup, the application core reads sensor values, packages them into packets, and sends them to the network core via IPC communication. The network core then transmits the data via Bluetooth. However, I am facing an issue in this process.
Here are the cases that I have successfully implemented so far:
- Implementing Bluetooth on the application core and sending data successfully.
- Implementing Bluetooth on the network core and successfully sending string data.
- Sending a 1-byte hex value from the application core to the network core via IPC and successfully transmitting it via Bluetooth.
However, an issue occurs when transmitting a full packet.
Upon checking the logs of both the application core and the network core, I can confirm that ep_bound is successful on both cores. However, when calling ipc_service_send, an error occurs:
ipc_service: Endpoint not registered, and the packet data is not sent.
The packet size has been limited to not exceed 200 bytes for BLE communication, and even when reducing the packet payload to a minimal 20 bytes, the data is still not transmitted.
Since there seems to be no issue when sending a 1-byte hex value, it appears that the endpoint is set up correctly.
However, I don't understand why the issue occurs when sending data as a packet.
