usbh_hid_kbd_getkey

#include <rl_usb.h>

int usbh_hid_kbd_getkey (
  U8  ctrl,
  U8  dev_idx
);

The function usbh_hid_kbd_getkey retrieves the keyboard key. The argument ctrl is the index of USB Host Controller. The argument dev_idx is the index of device instance.

Implementing this function in user code overrides library function that handles boot protocol device keyboard input.

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

Value of retrieved keyboard signal. Value of -1 means that no new key data was available.

usbh_hid_data_in, usbh_hid_data_in_callback, usbh_hid_data_out, usbh_hid_get_last_error, usbh_hid_mouse_getdata, usbh_hid_parse_report_desc, usbh_hid_status

#include <rl_usb.h>

int getline (char *line, int n)  {
  int key;

  ..
  key = usbh_hid_kbd_getkey (0, 0); // Read key from HID keyboard 0 on controller 0
  ..
)