Custom USB Device Endpoint doesn't Read After first Transaction

RE: Custom USB Device Endpoint doesn't Read After first Transaction

Sigurd — Tue, 05 Oct 2021 15:54:52 GMT

Try calling app_usbd_ep_handled_transfer() at the end of your app_usbd_antusb_read() function.

RE: Custom USB Device Endpoint doesn't Read After first Transaction

purpl3F0x — Tue, 05 Oct 2021 15:38:57 GMT

Yes I call app_usbd_antusb_read but It's much more simpler than the CDC ACM one's.

ret_code_t app_usbd_antusb_read(app_usbd_antusb_t const *     p_antusb,
                                  ANT_MESSAGE * const         p_antmsg)
{
    ASSERT(p_antusb != NULL);
    ASSERT(p_antmsg != NULL);

    ret_code_t ret = NRF_SUCCESS;

    app_usbd_antusb_ctx_t * p_antusb_ctx = antusb_ctx_get(p_antusb);
    const uint8_t* rx_buf = p_antusb_ctx->rx_buf;
    const uint8_t rx_size =  p_antusb_ctx->rx_buf_size;

    NRF_LOG_INFO("Reading Buffer: (%i)", rx_size);
    NRF_LOG_HEXDUMP_INFO(p_antusb_ctx->rx_buf, rx_size);

    if (rx_buf[0] != MESG_TX_SYNC)
    {
        NRF_LOG_ERROR("Rx buffer doesn't start with sync");
        return NRF_ERROR_INTERNAL;
    }
    
    const unsigned total_mesglen = rx_buf[1] + MESG_SYNC_SIZE + MESG_SIZE_SIZE + MESG_ID_SIZE;
    const uint8_t checksum = rx_buf[total_mesglen];
    

    memcpy(p_antmsg->aucMessage, rx_buf + 1,  total_mesglen - 1);

    return NRF_SUCCESS;
}

RE: Custom USB Device Endpoint doesn't Read After first Transaction

Sigurd — Tue, 05 Oct 2021 15:25:59 GMT

I assume this somewhat similar to CDC ACM? What are you doing in the user_event handler? Are you calling a function similar to app_usbd_cdc_acm_read() ? (that again calls app_usbd_ep_handled_transfer())

RE: Custom USB Device Endpoint doesn't Read After first Transaction

purpl3F0x — Fri, 01 Oct 2021 16:08:41 GMT

@Sigurd any clue ?

RE: Custom USB Device Endpoint doesn't Read After first Transaction

purpl3F0x — Mon, 27 Sep 2021 16:59:02 GMT

Hi Sigurd, doesn't seem to be the case. I only see 2 calls on antusb_endpoint_ev one for NRF_USBD_EP_WAITING and one for NRF_USBD_EP_OK. I also tried removing the call to `user_event_handler` in case it that was causing the issue

RE: Custom USB Device Endpoint doesn't Read After first Transaction

Sigurd — Mon, 27 Sep 2021 15:43:50 GMT

Hi,

[quote user=""]The device reads the data correctly that are being sent by the host - from an OUT event- but it doesn't seem to respond on later transfers.[/quote]

Does it enter antusb_endpoint_ev() on the later transfers?