#include <rl_usb.h>
int usbh_hid_data_out (
  U8  ctrl,
  U8  dev_idx,
  U8* ptr_data,
  U16 data_len
);

The function usbh_hid_data_out sends data to the USB HID device. The argument ctrl is the index of USB Host Controller. The argument dev_idx is the index of device instance. The argument ptr_data is a pointer to data to be sent. The argument data_len is a number of bytes requested to be sent.

The usbh_hid_data_out function is part of the RL-USB Host Class Driver software layer.

A integer value indicating number of sent data bytes.

usbh_hid_data_in, usbh_hid_data_in_callback, usbh_hid_get_last_error, usbh_hid_kbd_getkey, usbh_hid_mouse_getdata, usbh_hid_parse_report_desc, usbh_hid_status

#include <rl_usb.h>

void parse_HID (void)  {
  U8 data[] = "1234";

  ..
  if (usbh_hid_data_out (0, 0, &data, 4)) { // If data sent to HID device
    ..
  }
)