usbd_hid_get_report

#include <RTL.h>
#include <rl_usb.h>

int usbd_hid_get_report (
  U8  rtype,                  // Report type
  U8  rid,                    // Report ID
  U8* buf,                    // Pointer to the buffer to report data
  U8  req                     // Request type
);

The function usbd_hid_get_report prepares data that will be returned to the USB Host. The function is called on any of following events; after previous report was sent, if idle period has expired or if report was requested through control endpoint.

Arguments:

• rtype: report type

  Value	Description
  HID_REPORT_INPUT	Input report requested.
  HID_REPORT_FEATURE	Feature report requested.

• rid: report ID (0 - if only one report exists in system)
• buf: pointer to the buffer to report data
• req:

  Value	Description
  USBD_HID_REQ_EP_CTRL	Request came from control endpoint.
  USBD_HID_REQ_PERIOD_UPDATE	Request came from idle period expiration.
  USBD_HID_REQ_EP_INT	Request came from previously sent report on interrupt endpoint.

The function usbd_hid_get_report is part of the USB Device Function Driver layer of the RL-USB Device Software Stack.

Modify this function to the application needs.

Loaded report size in bytes.

usbd_hid_get_protocol, usbd_hid_get_report_trigger, usbd_hid_init, usbd_hid_set_protocol, usbd_hid_set_report

#include <RTL.h>
#include <rl_usb.h>

U8 feat;

int usbd_hid_get_report (U8 rtype, U8 rid, U8 *buf, U8 req) {

  switch (rtype) {
    case HID_REPORT_INPUT:
      switch (rid) {
         case 0:
          switch (req) {
            case USBD_HID_REQ_EP_CTRL:
            case USBD_HID_REQ_PERIOD_UPDATE:
              buf[0] = 1;
              return (1);
            case USBD_HID_REQ_EP_INT:
              break;
          }
          break;
      }
      break;
    case HID_REPORT_FEATURE:
      buf[0] = feat;
      return (1);
  }
  return (0);
}