How to transmit BULK via USB HID?

RE: How to transmit BULK via USB HID?

shenwrt — Mon, 11 Mar 2019 01:39:38 GMT

I changed the code in app_usbd_hid_generic.c, and every time the PC sends a message, it goes into this function and gets the endpoint number, but the data is from the old data from the last time

static ret_code_t hid_generic_ep_transfer_out(app_usbd_class_inst_t const * p_inst)
{

    app_usbd_hid_generic_t const * p_generic = hid_generic_get(p_inst);
    nrf_drv_usbd_ep_t              ep_addr   = app_usbd_hid_epout_addr_get(p_inst);

    /*Request setup data*/
    app_usbd_hid_report_buffer_t const * p_rep_buff;

    p_rep_buff = app_usbd_hid_rep_buff_out_get(&p_generic->specific.inst.hid_inst);
    NRF_DRV_USBD_TRANSFER_OUT(transfer, p_rep_buff->p_buff, p_rep_buff->size);

	NRF_LOG_INFO("hid_generic_ep_transfer_out,ep_addr = %d",ep_addr);
	NRF_LOG_INFO("p_rep_buff->p_buff[0] = %d,[1] = %d,[2] = %d,[3] = %d,[4] = %d,[5] = %d",p_rep_buff->p_buff[0], p_rep_buff->p_buff[1], 
																					p_rep_buff->p_buff[2], p_rep_buff->p_buff[3], 
																					p_rep_buff->p_buff[4], p_rep_buff->p_buff[5]);
    return app_usbd_ep_transfer(ep_addr, &transfer);
}

RE: How to transmit BULK via USB HID?

shenwrt — Sat, 09 Mar 2019 06:40:12 GMT

Hi Kenneth

I can catch data interrupts in "hid_generic_ep_transfer_out", but there is never an "APP_USBD_HID_USER_EVT_OUT_REPORT_READY" interrupt.

I don't know if I initialized it the wrong way.

Thank you very much for your help.

RE: How to transmit BULK via USB HID?

shenwrt — Wed, 06 Mar 2019 16:57:35 GMT

Sorry, I can't open your link, I want to ask if my code is correct, where is the problem, please help me correct, thank you!The following is my project document,SDK15.2devzone.nordicsemi.com/.../usbd_5F00_hid_5F00_generic.rar

RE: How to transmit BULK via USB HID?

Kenneth — Wed, 06 Mar 2019 14:50:25 GMT

Have you had a look at the usbd_hid_composite example?

There is an example there showing how to get report data for the keyboard. Specifically, take a look at the hid_kbd_on_set_report_data_cb(..) function, implemented on line 322 of app_usbd_hid_kbd.c

There is also this case that I can see have used APP_USBD_HID_USER_EVT_OUT_REPORT_READY:
https://devzone.nordicsemi.com/f/nordic-q-a/40364/problems-with-out-reports-on-usb-hid

Best regards
Kenneth

RE: How to transmit BULK via USB HID?

shenwrt — Tue, 05 Mar 2019 16:13:21 GMT

Google translation, may not be accurate