mirror of
https://github.com/qmk/qmk_firmware.git
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212 lines
6.6 KiB
C
212 lines
6.6 KiB
C
/*
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LUFA Library
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Copyright (C) Dean Camera, 2017.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaims all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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#define __INCLUDE_FROM_USB_DRIVER
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#include "../../Core/USBMode.h"
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#if defined(USB_CAN_BE_DEVICE)
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#define __INCLUDE_FROM_HID_DRIVER
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#define __INCLUDE_FROM_HID_DEVICE_C
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#include "HIDClassDevice.h"
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void HID_Device_ProcessControlRequest(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo)
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{
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if (!(Endpoint_IsSETUPReceived()))
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return;
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if (USB_ControlRequest.wIndex != HIDInterfaceInfo->Config.InterfaceNumber)
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return;
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switch (USB_ControlRequest.bRequest)
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{
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case HID_REQ_GetReport:
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if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
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{
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uint16_t ReportSize = 0;
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uint8_t ReportID = (USB_ControlRequest.wValue & 0xFF);
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uint8_t ReportType = (USB_ControlRequest.wValue >> 8) - 1;
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uint8_t ReportData[HIDInterfaceInfo->Config.PrevReportINBufferSize];
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memset(ReportData, 0, sizeof(ReportData));
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CALLBACK_HID_Device_CreateHIDReport(HIDInterfaceInfo, &ReportID, ReportType, ReportData, &ReportSize);
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if (HIDInterfaceInfo->Config.PrevReportINBuffer != NULL)
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{
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memcpy(HIDInterfaceInfo->Config.PrevReportINBuffer, ReportData,
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HIDInterfaceInfo->Config.PrevReportINBufferSize);
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}
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Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);
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Endpoint_ClearSETUP();
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if (ReportID)
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Endpoint_Write_8(ReportID);
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Endpoint_Write_Control_Stream_LE(ReportData, ReportSize);
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Endpoint_ClearOUT();
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}
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break;
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case HID_REQ_SetReport:
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if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
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{
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uint16_t ReportSize = USB_ControlRequest.wLength;
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uint8_t ReportID = (USB_ControlRequest.wValue & 0xFF);
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uint8_t ReportType = (USB_ControlRequest.wValue >> 8) - 1;
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uint8_t ReportData[ReportSize];
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Endpoint_ClearSETUP();
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Endpoint_Read_Control_Stream_LE(ReportData, ReportSize);
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Endpoint_ClearIN();
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CALLBACK_HID_Device_ProcessHIDReport(HIDInterfaceInfo, ReportID, ReportType,
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&ReportData[ReportID ? 1 : 0], ReportSize - (ReportID ? 1 : 0));
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}
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break;
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case HID_REQ_GetProtocol:
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if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
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{
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Endpoint_ClearSETUP();
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while (!(Endpoint_IsINReady()));
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Endpoint_Write_8(HIDInterfaceInfo->State.UsingReportProtocol);
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Endpoint_ClearIN();
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Endpoint_ClearStatusStage();
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}
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break;
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case HID_REQ_SetProtocol:
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if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
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{
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Endpoint_ClearSETUP();
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Endpoint_ClearStatusStage();
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HIDInterfaceInfo->State.UsingReportProtocol = ((USB_ControlRequest.wValue & 0xFF) != 0x00);
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}
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break;
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case HID_REQ_SetIdle:
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if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))
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{
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Endpoint_ClearSETUP();
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Endpoint_ClearStatusStage();
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HIDInterfaceInfo->State.IdleCount = ((USB_ControlRequest.wValue & 0xFF00) >> 6);
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}
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break;
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case HID_REQ_GetIdle:
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if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
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{
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Endpoint_ClearSETUP();
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while (!(Endpoint_IsINReady()));
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Endpoint_Write_8(HIDInterfaceInfo->State.IdleCount >> 2);
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Endpoint_ClearIN();
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Endpoint_ClearStatusStage();
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}
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break;
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}
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}
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bool HID_Device_ConfigureEndpoints(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo)
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{
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memset(&HIDInterfaceInfo->State, 0x00, sizeof(HIDInterfaceInfo->State));
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HIDInterfaceInfo->State.UsingReportProtocol = true;
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HIDInterfaceInfo->State.IdleCount = 500;
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HIDInterfaceInfo->Config.ReportINEndpoint.Type = EP_TYPE_INTERRUPT;
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if (!(Endpoint_ConfigureEndpointTable(&HIDInterfaceInfo->Config.ReportINEndpoint, 1)))
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return false;
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return true;
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}
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void HID_Device_USBTask(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo)
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{
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if (USB_DeviceState != DEVICE_STATE_Configured)
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return;
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if (HIDInterfaceInfo->State.PrevFrameNum == USB_Device_GetFrameNumber())
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{
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#if defined(USB_DEVICE_OPT_LOWSPEED)
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if (!(USB_Options & USB_DEVICE_OPT_LOWSPEED))
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return;
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#else
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return;
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#endif
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}
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Endpoint_SelectEndpoint(HIDInterfaceInfo->Config.ReportINEndpoint.Address);
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if (Endpoint_IsReadWriteAllowed())
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{
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uint8_t ReportINData[HIDInterfaceInfo->Config.PrevReportINBufferSize];
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uint8_t ReportID = 0;
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uint16_t ReportINSize = 0;
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memset(ReportINData, 0, sizeof(ReportINData));
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bool ForceSend = CALLBACK_HID_Device_CreateHIDReport(HIDInterfaceInfo, &ReportID, HID_REPORT_ITEM_In,
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ReportINData, &ReportINSize);
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bool StatesChanged = false;
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bool IdlePeriodElapsed = (HIDInterfaceInfo->State.IdleCount && !(HIDInterfaceInfo->State.IdleMSRemaining));
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if (HIDInterfaceInfo->Config.PrevReportINBuffer != NULL)
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{
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StatesChanged = (memcmp(ReportINData, HIDInterfaceInfo->Config.PrevReportINBuffer, ReportINSize) != 0);
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memcpy(HIDInterfaceInfo->Config.PrevReportINBuffer, ReportINData, HIDInterfaceInfo->Config.PrevReportINBufferSize);
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}
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if (ReportINSize && (ForceSend || StatesChanged || IdlePeriodElapsed))
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{
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HIDInterfaceInfo->State.IdleMSRemaining = HIDInterfaceInfo->State.IdleCount;
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Endpoint_SelectEndpoint(HIDInterfaceInfo->Config.ReportINEndpoint.Address);
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if (ReportID)
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Endpoint_Write_8(ReportID);
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Endpoint_Write_Stream_LE(ReportINData, ReportINSize, NULL);
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Endpoint_ClearIN();
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}
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HIDInterfaceInfo->State.PrevFrameNum = USB_Device_GetFrameNumber();
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}
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}
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#endif
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