the transfer speed of the cdc_acm in ncs

I did a quick test with the cdc_acm example where I called uart_fifo_fill(dev, buffer, 64); as fast as possible, and I seem to receive about 1000000bytes in ~10seconds, which equal about 100kBps = 800kbps. Considering that the wireless protocol have some overhead, timing, and bidirectional communication it should be sufficient to to handle most data I would think.

Best regards,
Kenneth

I did a quick test with the cdc_acm example where I called uart_fifo_fill(dev, buffer, 64); as fast as possible, and I seem to receive about 1000000bytes in ~10seconds, which equal about 100kBps = 800kbps. Considering that the wireless protocol have some overhead, timing, and bidirectional communication it should be sufficient to to handle most data I would think.

Best regards,
Kenneth

my project use the wireless rate speed is 2Mbps, it transfer the image data and use the fastest method(continue rx), now i want to speed up the cdc transfer, is there a way.

I can find that the nRF5 SDK implementation we could get higher throughput, but there were also some dependency on the OS (e.g. Linux was faster than Windows), but I can report it internally so someone can look at improving it for future, what throughput are you aiming at?

Kenneth

faster than 2Mbps

I want copy usbd from nrf5 sdk to zephyr, whether it is practicable ?

The numbers from the nRF5 SDK are here:
https://devzone.nordicsemi.com/f/nordic-q-a/85903/nrf52840-usb-cdc-baud-rate/358927#358927

Kenneth