RE: Unable to allocate a Pipe/Buffer in Driver internal Thread (ncs 2.2.0)

Kriki — Mon, 06 Feb 2023 11:49:45 GMT

Hello,
I have tried giving the Thread Stack more Resources but that didn't help.

But i have just tried adding a Buffer like you said and that worked. I dont know exactly why it works now but all i changed was:

1. Use the unsigned char __aligned(4) my_ring_buffer[100]; you suggested
2. I Specifically didnt use the uin8_t Type, though this should not have an Effect as its the same as unsigned char.

I can now also allocate a uint8_t Buffer.

Thank you for your fast Reply and the Help.

Regards,
Nick

RE: Unable to allocate a Pipe/Buffer in Driver internal Thread (ncs 2.2.0)

Edvin — Mon, 06 Feb 2023 10:11:36 GMT

Hello,

[quote user=""]Any Help or Insight on how Kernel Threads and Stacks work in Zephyr would be greatly appreciated
[/quote]

For general Zephyr questions I recommend that you reach out to Zephyr's support. I would start here. (link to their discord support channel)

Have you tried giving your stack a bit more resources?

Alternatively, you can try to add a buffer to your struct and use that one for k_pipe_init() :

unsigned char __aligned(4) my_ring_buffer[100];

Please see:

https://developer.nordicsemi.com/nRF_Connect_SDK/doc/latest/zephyr/kernel/services/data_passing/pipes.html#implementation

Best regards,

Edvin