diff options
Diffstat (limited to 'tmk_core/protocol/arm_atsam/usb/udi_hid.c')
| -rw-r--r-- | tmk_core/protocol/arm_atsam/usb/udi_hid.c | 162 |
1 files changed, 162 insertions, 0 deletions
diff --git a/tmk_core/protocol/arm_atsam/usb/udi_hid.c b/tmk_core/protocol/arm_atsam/usb/udi_hid.c new file mode 100644 index 000000000..131b7a0ec --- /dev/null +++ b/tmk_core/protocol/arm_atsam/usb/udi_hid.c @@ -0,0 +1,162 @@ +/** + * \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; +} + +//@} |