You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
163 lines
5.5 KiB
163 lines
5.5 KiB
![]()
6 years ago
|
/**
|
||
|
* \file
|
||
|
*
|
||
|
* \brief USB Device Human Interface Device (HID) interface.
|
||
|
*
|
||
|
* Copyright (c) 2009-2015 Atmel Corporation. All rights reserved.
|
||
|
*
|
||
|
* \asf_license_start
|
||
|
*
|
||
|
* \page License
|
||
|
*
|
||
|
* Redistribution and use in source and binary forms, with or without
|
||
|
* modification, are permitted provided that the following conditions are met:
|
||
|
*
|
||
|
* 1. Redistributions of source code must retain the above copyright notice,
|
||
|
* this list of conditions and the following disclaimer.
|
||
|
*
|
||
|
* 2. Redistributions in binary form must reproduce the above copyright notice,
|
||
|
* this list of conditions and the following disclaimer in the documentation
|
||
|
* and/or other materials provided with the distribution.
|
||
|
*
|
||
|
* 3. The name of Atmel may not be used to endorse or promote products derived
|
||
|
* from this software without specific prior written permission.
|
||
|
*
|
||
|
* 4. This software may only be redistributed and used in connection with an
|
||
|
* Atmel microcontroller product.
|
||
|
*
|
||
|
* THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR IMPLIED
|
||
|
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
|
||
|
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
|
||
|
* EXPRESSLY AND SPECIFICALLY DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR
|
||
|
* ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
|
||
|
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
|
||
|
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
|
||
|
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
|
||
|
* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
|
||
|
* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
|
||
|
* POSSIBILITY OF SUCH DAMAGE.
|
||
|
*
|
||
|
* \asf_license_stop
|
||
|
*
|
||
|
*/
|
||
|
/*
|
||
|
* Support and FAQ: visit <a href="http://www.atmel.com/design-support/">Atmel Support</a>
|
||
|
*/
|
||
|
|
||
|
#include "conf_usb.h"
|
||
|
#include "usb_protocol.h"
|
||
|
#include "udd.h"
|
||
|
#include "udc.h"
|
||
|
#include "udi_hid.h"
|
||
|
|
||
|
|
||
|
/**
|
||
|
* \ingroup udi_hid_group
|
||
|
* \defgroup udi_hid_group_internal Implementation of HID common library
|
||
|
* @{
|
||
|
*/
|
||
|
|
||
|
/**
|
||
|
* \brief Send the specific descriptors requested by SETUP request
|
||
|
*
|
||
|
* \retval true if the descriptor is supported
|
||
|
*/
|
||
|
static bool udi_hid_reqstdifaceget_descriptor(uint8_t *report_desc);
|
||
|
|
||
|
bool udi_hid_setup( uint8_t *rate, uint8_t *protocol, uint8_t *report_desc, bool (*setup_report)(void) )
|
||
|
{
|
||
|
if (Udd_setup_is_in()) {
|
||
|
// Requests Interface GET
|
||
|
if (Udd_setup_type() == USB_REQ_TYPE_STANDARD) {
|
||
|
// Requests Standard Interface Get
|
||
|
switch (udd_g_ctrlreq.req.bRequest) {
|
||
|
|
||
|
case USB_REQ_GET_DESCRIPTOR:
|
||
|
return udi_hid_reqstdifaceget_descriptor(report_desc);
|
||
|
}
|
||
|
}
|
||
|
if (Udd_setup_type() == USB_REQ_TYPE_CLASS) {
|
||
|
// Requests Class Interface Get
|
||
|
switch (udd_g_ctrlreq.req.bRequest) {
|
||
|
|
||
|
case USB_REQ_HID_GET_REPORT:
|
||
|
return setup_report();
|
||
|
|
||
|
case USB_REQ_HID_GET_IDLE:
|
||
|
udd_g_ctrlreq.payload = rate;
|
||
|
udd_g_ctrlreq.payload_size = 1;
|
||
|
return true;
|
||
|
|
||
|
case USB_REQ_HID_GET_PROTOCOL:
|
||
|
udd_g_ctrlreq.payload = protocol;
|
||
|
udd_g_ctrlreq.payload_size = 1;
|
||
|
return true;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
if (Udd_setup_is_out()) {
|
||
|
// Requests Interface SET
|
||
|
if (Udd_setup_type() == USB_REQ_TYPE_CLASS) {
|
||
|
// Requests Class Interface Set
|
||
|
switch (udd_g_ctrlreq.req.bRequest) {
|
||
|
|
||
|
case USB_REQ_HID_SET_REPORT:
|
||
|
return setup_report();
|
||
|
|
||
|
case USB_REQ_HID_SET_IDLE:
|
||
|
*rate = udd_g_ctrlreq.req.wValue >> 8;
|
||
|
return true;
|
||
|
|
||
|
case USB_REQ_HID_SET_PROTOCOL:
|
||
|
if (0 != udd_g_ctrlreq.req.wLength)
|
||
|
return false;
|
||
|
*protocol = udd_g_ctrlreq.req.wValue;
|
||
|
return true;
|
||
|
}
|
||
|
}
|
||
|
}
|
||
|
return false; // Request not supported
|
||
|
}
|
||
|
|
||
|
//---------------------------------------------
|
||
|
//------- Internal routines
|
||
|
|
||
|
static bool udi_hid_reqstdifaceget_descriptor(uint8_t *report_desc)
|
||
|
{
|
||
|
usb_hid_descriptor_t UDC_DESC_STORAGE *ptr_hid_desc;
|
||
|
|
||
|
// Get the USB descriptor which is located after the interface descriptor
|
||
|
// This descriptor must be the HID descriptor
|
||
|
ptr_hid_desc = (usb_hid_descriptor_t UDC_DESC_STORAGE *) ((uint8_t *)
|
||
|
udc_get_interface_desc() + sizeof(usb_iface_desc_t));
|
||
|
if (USB_DT_HID != ptr_hid_desc->bDescriptorType)
|
||
|
return false;
|
||
|
|
||
|
// The SETUP request can ask for:
|
||
|
// - an USB_DT_HID descriptor
|
||
|
// - or USB_DT_HID_REPORT descriptor
|
||
|
// - or USB_DT_HID_PHYSICAL descriptor
|
||
|
if (USB_DT_HID == (uint8_t) (udd_g_ctrlreq.req.wValue >> 8)) {
|
||
|
// USB_DT_HID descriptor requested then send it
|
||
|
udd_g_ctrlreq.payload = (uint8_t *) ptr_hid_desc;
|
||
|
udd_g_ctrlreq.payload_size =
|
||
|
min(udd_g_ctrlreq.req.wLength,
|
||
|
ptr_hid_desc->bLength);
|
||
|
return true;
|
||
|
}
|
||
|
// The HID_X descriptor requested must correspond to report type
|
||
|
// included in the HID descriptor
|
||
|
if (ptr_hid_desc->bRDescriptorType ==
|
||
|
(uint8_t) (udd_g_ctrlreq.req.wValue >> 8)) {
|
||
|
// Send HID Report descriptor given by high level
|
||
|
udd_g_ctrlreq.payload = report_desc;
|
||
|
udd_g_ctrlreq.payload_size =
|
||
|
min(udd_g_ctrlreq.req.wLength,
|
||
|
le16_to_cpu(ptr_hid_desc->wDescriptorLength));
|
||
|
return true;
|
||
|
}
|
||
|
return false;
|
||
|
}
|
||
|
|
||
|
//@}
|