tinyUSB/tinyusb/class/hid_device.c

/**************************************************************************/
/*!
    @file     hid_device.c
    @author   hathach (tinyusb.org)

    @section LICENSE

    Software License Agreement (BSD License)

    Copyright (c) 2013, hathach (tinyusb.org)
    All rights reserved.

    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. Neither the name of the copyright holders nor the
    names of its contributors may be used to endorse or promote products
    derived from this software without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS ''AS IS'' AND ANY
    EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
    WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
    DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER 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.

    This file is part of the tinyusb stack.
*/
/**************************************************************************/

#include "tusb_option.h"

#if (MODE_DEVICE_SUPPORTED && DEVICE_CLASS_HID)

#define _TINY_USB_SOURCE_FILE_
//--------------------------------------------------------------------+
// INCLUDE
//--------------------------------------------------------------------+
#include "common/common.h"
#include "hid_device.h"
#include "tusb_descriptors.h"

//--------------------------------------------------------------------+
// MACRO CONSTANT TYPEDEF
//--------------------------------------------------------------------+
ATTR_USB_MIN_ALIGNMENT uint8_t set_report[ MAX_OF(sizeof(hid_keyboard_report_t), sizeof(hid_mouse_report_t)) ];

typedef struct {
  uint8_t const * p_report_desc;
  uint16_t report_length;

  endpoint_handle_t ept_handle;
  uint8_t interface_number;
}hidd_interface_t;


//--------------------------------------------------------------------+
// KEYBOARD APPLICATION API
//--------------------------------------------------------------------+
#if TUSB_CFG_DEVICE_HID_KEYBOARD
STATIC_VAR TUSB_CFG_ATTR_USBRAM hidd_interface_t keyboardd_data =
{
    .p_report_desc    = app_tusb_keyboard_desc_report
};

bool tusbd_hid_keyboard_is_busy(uint8_t coreid)
{
  return dcd_pipe_is_busy(keyboardd_data.ept_handle);
}

tusb_error_t tusbd_hid_keyboard_send(uint8_t coreid, hid_keyboard_report_t const *p_report)
{
  //------------- verify data -------------//

  hidd_interface_t * p_kbd = &keyboardd_data; // TODO &keyboardd_data[coreid];

  ASSERT_STATUS( dcd_pipe_xfer(p_kbd->ept_handle, p_report, sizeof(hid_keyboard_report_t), false) ) ;

  return TUSB_ERROR_NONE;
}
#endif

//--------------------------------------------------------------------+
// MOUSE APPLICATION API
//--------------------------------------------------------------------+
#if TUSB_CFG_DEVICE_HID_MOUSE
STATIC_VAR TUSB_CFG_ATTR_USBRAM hidd_interface_t moused_data =
{
    .p_report_desc    = app_tusb_mouse_desc_report
};

bool tusbd_hid_mouse_is_busy(uint8_t coreid)
{
  return dcd_pipe_is_busy(moused_data.ept_handle);
}

tusb_error_t tusbd_hid_mouse_send(uint8_t coreid, hid_mouse_report_t const *p_report)
{
  //------------- verify data -------------//

  hidd_interface_t * p_mouse = &moused_data; // TODO &keyboardd_data[coreid];

  ASSERT_STATUS( dcd_pipe_xfer(p_mouse->ept_handle, p_report, sizeof(hid_mouse_report_t), false) ) ;

  return TUSB_ERROR_NONE;
}

#endif


//--------------------------------------------------------------------+
// USBD-CLASS API
//--------------------------------------------------------------------+
void hidd_init(void)
{
  // TODO not implemented yet
}

void hidd_bus_reset(uint8_t coreid)
{
  // TODO not implemented yet
}

tusb_error_t hidd_control_request(uint8_t coreid, tusb_control_request_t const * p_request)
{
  hidd_interface_t* p_hid =
    #if TUSB_CFG_DEVICE_HID_KEYBOARD
      (p_request->wIndex == keyboardd_data.interface_number) ? &keyboardd_data :
    #endif
    #if TUSB_CFG_DEVICE_HID_MOUSE
      (p_request->wIndex == moused_data.interface_number) ? &moused_data :
    #endif
      NULL;

  ASSERT_PTR(p_hid, TUSB_ERROR_FAILED);

  //------------- STD Request -------------//
  if (p_request->bmRequestType_bit.type == TUSB_REQUEST_TYPE_STANDARD)
  {
    uint8_t const desc_type  = u16_high_u8(p_request->wValue);
    uint8_t const desc_index = u16_low_u8 (p_request->wValue);

    ASSERT ( p_request->bRequest == TUSB_REQUEST_GET_DESCRIPTOR && desc_type == HID_DESC_TYPE_REPORT,
             TUSB_ERROR_DCD_CONTROL_REQUEST_NOT_SUPPORT);

    dcd_pipe_control_xfer(coreid, TUSB_DIR_DEV_TO_HOST, p_hid->p_report_desc, p_hid->report_length);
  }
  //------------- Class Specific Request -------------//
  else if (p_request->bmRequestType_bit.type == TUSB_REQUEST_TYPE_CLASS)
  {
    switch(p_request->bRequest)
    {
      case HID_REQUEST_CONTROL_SET_IDLE:
        // idle_rate = u16_high_u8(p_request->wValue);
      break;

      case HID_REQUEST_CONTROL_SET_REPORT:
      {
        return TUSB_ERROR_DCD_CONTROL_REQUEST_NOT_SUPPORT; // TODO test STALL control out endpoint (with mouse+keyboard)

        // TODO HIDD set report support
        hid_request_report_type_t report_type = u16_high_u8(p_request->wValue);
        uint8_t report_id = u16_low_u8(p_request->wValue);

        dcd_pipe_control_xfer(coreid, TUSB_DIR_HOST_TO_DEV, &set_report, p_request->wLength);
      }
      break;

      case HID_REQUEST_CONTROL_GET_IDLE:
      case HID_REQUEST_CONTROL_GET_REPORT:
      case HID_REQUEST_CONTROL_GET_PROTOCOL:
      case HID_REQUEST_CONTROL_SET_PROTOCOL:
      default:
        return TUSB_ERROR_DCD_CONTROL_REQUEST_NOT_SUPPORT;
    }
  }else
  {
    return TUSB_ERROR_DCD_CONTROL_REQUEST_NOT_SUPPORT;
  }

  return TUSB_ERROR_NONE;
}

tusb_error_t hidd_open(uint8_t coreid, tusb_descriptor_interface_t const * p_interface_desc, uint16_t *p_length)
{
  uint8_t const *p_desc = (uint8_t const *) p_interface_desc;

  //------------- HID descriptor -------------//
  p_desc += p_desc[DESCRIPTOR_OFFSET_LENGTH];
  tusb_hid_descriptor_hid_t const *p_desc_hid = (tusb_hid_descriptor_hid_t const *) p_desc;
  ASSERT_INT(HID_DESC_TYPE_HID, p_desc_hid->bDescriptorType, TUSB_ERROR_HIDD_DESCRIPTOR_INTERFACE);

  //------------- Endpoint Descriptor -------------//
  p_desc += p_desc[DESCRIPTOR_OFFSET_LENGTH];
  tusb_descriptor_endpoint_t const *p_desc_endpoint = (tusb_descriptor_endpoint_t const *) p_desc;
  ASSERT_INT(TUSB_DESC_TYPE_ENDPOINT, p_desc_endpoint->bDescriptorType, TUSB_ERROR_HIDD_DESCRIPTOR_INTERFACE);

  if (p_interface_desc->bInterfaceSubClass == HID_SUBCLASS_BOOT)
  {
    switch(p_interface_desc->bInterfaceProtocol)
    {
      case HID_PROTOCOL_KEYBOARD:
      case HID_PROTOCOL_MOUSE:
      {
        hidd_interface_t* p_hid =
            #if TUSB_CFG_DEVICE_HID_KEYBOARD
              (p_interface_desc->bInterfaceProtocol == HID_PROTOCOL_KEYBOARD) ? &keyboardd_data :
            #endif
            #if TUSB_CFG_DEVICE_HID_MOUSE
              (p_interface_desc->bInterfaceProtocol == HID_PROTOCOL_MOUSE) ? &moused_data :
            #endif
              NULL;

        ASSERT_PTR(p_hid, TUSB_ERROR_FAILED);

        p_hid->interface_number = p_interface_desc->bInterfaceNumber;
        p_hid->report_length    = p_desc_hid->wReportLength;
        p_hid->ept_handle       = dcd_pipe_open(coreid, p_desc_endpoint, p_interface_desc->bInterfaceClass);
        ASSERT( endpointhandle_is_valid(p_hid->ept_handle), TUSB_ERROR_DCD_FAILED);
      }
      break;

      default: // TODO unknown, unsupported protocol --> skip this interface
        return TUSB_ERROR_HIDD_DESCRIPTOR_INTERFACE;
    }
    *p_length = sizeof(tusb_descriptor_interface_t) + sizeof(tusb_hid_descriptor_hid_t) + sizeof(tusb_descriptor_endpoint_t);
  }else
  {
    // open generic
    *p_length = 0;
    return TUSB_ERROR_HIDD_DESCRIPTOR_INTERFACE;
  }
  return TUSB_ERROR_NONE;
}

void hidd_isr(endpoint_handle_t edpt_hdl, tusb_event_t event, uint32_t xferred_bytes)
{
#if TUSB_CFG_DEVICE_HID_KEYBOARD
  if ( endpointhandle_is_equal(edpt_hdl, keyboardd_data.ept_handle) )
  {
    tusbd_hid_keyboard_isr(edpt_hdl.coreid, event, xferred_bytes);
    return;
  }
#endif

#if TUSB_CFG_DEVICE_HID_MOUSE
  if ( endpointhandle_is_equal(edpt_hdl, moused_data.ept_handle) )
  {
    tusbd_hid_mouse_isr(edpt_hdl.coreid, event, xferred_bytes);
    return;
  }
#endif
}

#if defined(CAP_DEVICE_ROMDRIVER)

//--------------------------------------------------------------------+
// MACRO CONSTANT TYPEDEF
//--------------------------------------------------------------------+
#if TUSB_CFG_DEVICE_HID_KEYBOARD
TUSB_CFG_ATTR_USBRAM uint8_t hidd_keyboard_buffer[1024]; // TODO memory reduce
TUSB_CFG_ATTR_USBRAM hid_keyboard_report_t hid_keyboard_report;
static volatile bool bKeyChanged = false;
#endif

#if TUSB_CFG_DEVICE_HID_MOUSE
TUSB_CFG_ATTR_USBRAM uint8_t hidd_mouse_buffer[1024]; // TODO memory reduce
TUSB_CFG_ATTR_USBRAM hid_mouse_report_t hid_mouse_report;
static volatile bool bMouseChanged = false;
#endif

//--------------------------------------------------------------------+
// APPLICATION API
//--------------------------------------------------------------------+
#if TUSB_CFG_DEVICE_HID_KEYBOARD
tusb_error_t tusbd_hid_keyboard_send_report(hid_keyboard_report_t *p_kbd_report)
{
//  uint32_t start_time = systickGetSecondsActive();
//  while (bKeyChanged) // TODO blocking while previous key has yet sent - can use fifo to improve this
//  {
//    ASSERT_MESSAGE(systickGetSecondsActive() - start_time < 5, ERR_FAILED, "HID Keyboard Timeout");
//  }

  if (bKeyChanged)
  {
    return TUSB_ERROR_FAILED;
  }

  ASSERT_PTR(p_kbd_report, TUSB_ERROR_FAILED);

  hid_keyboard_report = *p_kbd_report;
  bKeyChanged = true;

  return TUSB_ERROR_NONE;
}
#endif

#if TUSB_CFG_DEVICE_HID_MOUSE
tusb_error_t tusbd_hid_mouse_send_report(hid_mouse_report_t *p_mouse_report)
{
//  uint32_t start_time = systickGetSecondsActive();
//  while (bMouseChanged) // TODO Block while previous key hasn't been sent - can use fifo to improve this
//  {
//    ASSERT_MESSAGE(systickGetSecondsActive() - start_time < 5, ERR_FAILED, "HID Mouse Timeout");
//  }

  if (bMouseChanged)
  {
    return TUSB_ERROR_FAILED;
  }

  hid_mouse_report = *p_mouse_report;
  bMouseChanged = true;

  return TUSB_ERROR_NONE;
}
#endif

//--------------------------------------------------------------------+
// IMPLEMENTATION
//--------------------------------------------------------------------+
ErrorCode_t HID_GetReport( USBD_HANDLE_T hHid, USB_SETUP_PACKET* pSetup, uint8_t** pBuffer, uint16_t* plength)
{
  USB_HID_CTRL_T* pHidCtrl = (USB_HID_CTRL_T*) hHid;

  /* ReportID = SetupPacket.wValue.WB.L; */
  if (pSetup->wValue.WB.H == HID_REQUEST_REPORT_INPUT)
    return (ERR_USBD_STALL);          /* Not Supported */

  switch (pHidCtrl->protocol)
  {
    #if TUSB_CFG_DEVICE_HID_KEYBOARD
      case HID_PROTOCOL_KEYBOARD:
        *pBuffer = (uint8_t*) &hid_keyboard_report;
        *plength = sizeof(hid_keyboard_report_t);

        if (!bKeyChanged)
        {
          memset(pBuffer, 0, *plength);
        }
        bKeyChanged = false;
      break;
    #endif

    #if TUSB_CFG_DEVICE_HID_MOUSE
      case HID_PROTOCOL_MOUSE:
        *pBuffer = (uint8_t*) &hid_mouse_report;
        *plength = sizeof(hid_mouse_report_t);

        if (!bMouseChanged)
        {
          memset(pBuffer, 0, *plength);
        }
        bMouseChanged = false;
      break;
    #endif

    default:
      break;
  }

  return (LPC_OK);
}

ErrorCode_t HID_SetReport( USBD_HANDLE_T hHid, USB_SETUP_PACKET* pSetup, uint8_t** pBuffer, uint16_t length)
{
  /* we will reuse standard EP0Buf */
  if (length == 0)
    return LPC_OK;

  /* ReportID = SetupPacket.wValue.WB.L; */
  if (pSetup->wValue.WB.H != HID_REQUEST_REPORT_OUTPUT)
    return (ERR_USBD_STALL);          /* Not Supported */

  return (LPC_OK);
}

ErrorCode_t HID_EpIn_Hdlr (USBD_HANDLE_T hUsb, void* data, uint32_t event)
{
  if (USB_EVT_IN == event)
  {
    USB_HID_CTRL_T* pHidCtrl = (USB_HID_CTRL_T*)data;
    switch(pHidCtrl->protocol)
    {
      #if TUSB_CFG_DEVICE_HID_KEYBOARD
        case HID_PROTOCOL_KEYBOARD:
          if (!bKeyChanged)
          {
            memset(&hid_keyboard_report, 0, sizeof(hid_keyboard_report_t));
          }
          ROM_API->hw->WriteEP(hUsb, pHidCtrl->epin_adr, (uint8_t*) &hid_keyboard_report, sizeof(hid_keyboard_report_t));
          bKeyChanged = false;
        break;
      #endif

      #if TUSB_CFG_DEVICE_HID_MOUSE
        case HID_PROTOCOL_MOUSE:
          if (!bMouseChanged)
          {
            memset(&hid_mouse_report, 0, sizeof(hid_mouse_report_t));
          }
          ROM_API->hw->WriteEP(hUsb, pHidCtrl->epin_adr, (uint8_t*) &hid_mouse_report, sizeof(hid_mouse_report_t));
          bMouseChanged = false;
        break;
      #endif

      default:
        break;
    }
  }

  return LPC_OK;
}

ErrorCode_t HID_EpOut_Hdlr (USBD_HANDLE_T hUsb, void* data, uint32_t event)
{
  if (USB_EVT_OUT == event)
  {
    // not used yet
    // uint8_t outreport[8];
    // USB_HID_CTRL_T* pHidCtrl = (USB_HID_CTRL_T*)data;
    // ROM_API->hw->ReadEP(hUsb, pHidCtrl->epout_adr, outreport);
  }
  return LPC_OK;
}

#endif

#endif