I succeed implementing the asynchronous response using the following code Note the commented code, where I assumed that httpd_queue_work is used to delegate the http communication to the http server thread. However, without using httpd_queue_work it works just fine. This makes me wonder more when h...

I succeed implementing the asynchronous response using the following code Note the commented code, where I assumed that httpd_queue_work is used to delegate the http communication to the http server thread. However, without using httpd_queue_work it works just fine. This makes me wonder more when ht...

Hi, I am looking at the http server component and found this function: httpd_queue_work. After tracing the source code, I found that It merely ask the http server thread to invoke the work callback immediately. The callback is not called in a standalone thread. I wonder what is the purpose of using ...

I think this approach with the "magic" size value would result in less readable code of the application. You could probably add a function-like macro to "hide" this detail, and make the calling code look nicer, but then it's not going to be any different to introducing a new API. Also, would it be ...

Hi wuyuanyi, What you describe should be possible. We could introduce something like esp_event_post_moved which would take ownership of the pointer and would accept the deletion callback argument instead of event_data_size. Internally the deletion callback (finalizer) could be stored in an esp_even...

Hi, I am looking into using the esp_event to exchange data between my components. Currently, I am facing such an issue: my data is a non-trivial c++ class (e.g., stl containers), hence relying on the pass-by-copy mechanism of the event loop does not work for me. The alternative is to allocate the ob...

Hi, In the documentation: https://docs.espressif.com/projects/esp-idf/en/release-v4.0/api-reference/network/esp_now.html#send-esp-now-data If there is a lot of ESP-NOW data to send, call esp_now_send() to send less than or equal to 250 bytes of data once a time. Note that too short interval between ...

Hi thoraz,
Interesting findings. Can you also share your PCB layout?

I have read that ESP-NOW uses both MAC and IP addressing but I have not found a good article about when or if to use either or both. I will have a CPU sending out one request at a time directed to a single endpoint which could be on either network. Would it be best to set fixed IP's on everything, ...

ESP_Sprite wrote: ↑

Mon Oct 24, 2022 12:04 am

PSRAM chips don't have functionality to do an internal copy, so it always happens via the SPI lines. Memcpy() also invokes the cache and CPU to do the copy, the async function uses DMA so the CPU is free.

Thanks for your clarification