diff options
Diffstat (limited to 'LUFA/Drivers/USB/Class/Device/HIDClassDevice.c')
| -rw-r--r-- | LUFA/Drivers/USB/Class/Device/HIDClassDevice.c | 211 |
1 files changed, 211 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Class/Device/HIDClassDevice.c b/LUFA/Drivers/USB/Class/Device/HIDClassDevice.c new file mode 100644 index 0000000000..a8a6e8b50e --- /dev/null +++ b/LUFA/Drivers/USB/Class/Device/HIDClassDevice.c @@ -0,0 +1,211 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2017. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, distribute, and sell this + software and its documentation for any purpose is hereby granted + without fee, provided that the above copyright notice appear in + all copies and that both that the copyright notice and this + permission notice and warranty disclaimer appear in supporting + documentation, and that the name of the author not be used in + advertising or publicity pertaining to distribution of the + software without specific, written prior permission. + + The author disclaims all warranties with regard to this + software, including all implied warranties of merchantability + and fitness. In no event shall the author be liable for any + special, indirect or consequential damages or any damages + whatsoever resulting from loss of use, data or profits, whether + in an action of contract, negligence or other tortious action, + arising out of or in connection with the use or performance of + this software. +*/ + +#define __INCLUDE_FROM_USB_DRIVER +#include "../../Core/USBMode.h" + +#if defined(USB_CAN_BE_DEVICE) + +#define __INCLUDE_FROM_HID_DRIVER +#define __INCLUDE_FROM_HID_DEVICE_C +#include "HIDClassDevice.h" + +void HID_Device_ProcessControlRequest(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo) +{ + if (!(Endpoint_IsSETUPReceived())) + return; + + if (USB_ControlRequest.wIndex != HIDInterfaceInfo->Config.InterfaceNumber) + return; + + switch (USB_ControlRequest.bRequest) + { + case HID_REQ_GetReport: + if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE)) + { + uint16_t ReportSize = 0; + uint8_t ReportID = (USB_ControlRequest.wValue & 0xFF); + uint8_t ReportType = (USB_ControlRequest.wValue >> 8) - 1; + uint8_t ReportData[HIDInterfaceInfo->Config.PrevReportINBufferSize]; + + memset(ReportData, 0, sizeof(ReportData)); + + CALLBACK_HID_Device_CreateHIDReport(HIDInterfaceInfo, &ReportID, ReportType, ReportData, &ReportSize); + + if (HIDInterfaceInfo->Config.PrevReportINBuffer != NULL) + { + memcpy(HIDInterfaceInfo->Config.PrevReportINBuffer, ReportData, + HIDInterfaceInfo->Config.PrevReportINBufferSize); + } + + Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP); + + Endpoint_ClearSETUP(); + + if (ReportID) + Endpoint_Write_8(ReportID); + + Endpoint_Write_Control_Stream_LE(ReportData, ReportSize); + Endpoint_ClearOUT(); + } + + break; + case HID_REQ_SetReport: + if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) + { + uint16_t ReportSize = USB_ControlRequest.wLength; + uint8_t ReportID = (USB_ControlRequest.wValue & 0xFF); + uint8_t ReportType = (USB_ControlRequest.wValue >> 8) - 1; + uint8_t ReportData[ReportSize]; + + Endpoint_ClearSETUP(); + Endpoint_Read_Control_Stream_LE(ReportData, ReportSize); + Endpoint_ClearIN(); + + CALLBACK_HID_Device_ProcessHIDReport(HIDInterfaceInfo, ReportID, ReportType, + &ReportData[ReportID ? 1 : 0], ReportSize - (ReportID ? 1 : 0)); + } + + break; + case HID_REQ_GetProtocol: + if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE)) + { + Endpoint_ClearSETUP(); + while (!(Endpoint_IsINReady())); + Endpoint_Write_8(HIDInterfaceInfo->State.UsingReportProtocol); + Endpoint_ClearIN(); + Endpoint_ClearStatusStage(); + } + + break; + case HID_REQ_SetProtocol: + if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) + { + Endpoint_ClearSETUP(); + Endpoint_ClearStatusStage(); + + HIDInterfaceInfo->State.UsingReportProtocol = ((USB_ControlRequest.wValue & 0xFF) != 0x00); + } + + break; + case HID_REQ_SetIdle: + if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE)) + { + Endpoint_ClearSETUP(); + Endpoint_ClearStatusStage(); + + HIDInterfaceInfo->State.IdleCount = ((USB_ControlRequest.wValue & 0xFF00) >> 6); + } + + break; + case HID_REQ_GetIdle: + if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE)) + { + Endpoint_ClearSETUP(); + while (!(Endpoint_IsINReady())); + Endpoint_Write_8(HIDInterfaceInfo->State.IdleCount >> 2); + Endpoint_ClearIN(); + Endpoint_ClearStatusStage(); + } + + break; + } +} + +bool HID_Device_ConfigureEndpoints(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo) +{ + memset(&HIDInterfaceInfo->State, 0x00, sizeof(HIDInterfaceInfo->State)); + HIDInterfaceInfo->State.UsingReportProtocol = true; + HIDInterfaceInfo->State.IdleCount = 500; + + HIDInterfaceInfo->Config.ReportINEndpoint.Type = EP_TYPE_INTERRUPT; + + if (!(Endpoint_ConfigureEndpointTable(&HIDInterfaceInfo->Config.ReportINEndpoint, 1))) + return false; + + return true; +} + +void HID_Device_USBTask(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo) +{ + if (USB_DeviceState != DEVICE_STATE_Configured) + return; + + if (HIDInterfaceInfo->State.PrevFrameNum == USB_Device_GetFrameNumber()) + { + #if defined(USB_DEVICE_OPT_LOWSPEED) + if (!(USB_Options & USB_DEVICE_OPT_LOWSPEED)) + return; + #else + return; + #endif + } + + Endpoint_SelectEndpoint(HIDInterfaceInfo->Config.ReportINEndpoint.Address); + + if (Endpoint_IsReadWriteAllowed()) + { + uint8_t ReportINData[HIDInterfaceInfo->Config.PrevReportINBufferSize]; + uint8_t ReportID = 0; + uint16_t ReportINSize = 0; + + memset(ReportINData, 0, sizeof(ReportINData)); + + bool ForceSend = CALLBACK_HID_Device_CreateHIDReport(HIDInterfaceInfo, &ReportID, HID_REPORT_ITEM_In, + ReportINData, &ReportINSize); + bool StatesChanged = false; + bool IdlePeriodElapsed = (HIDInterfaceInfo->State.IdleCount && !(HIDInterfaceInfo->State.IdleMSRemaining)); + + if (HIDInterfaceInfo->Config.PrevReportINBuffer != NULL) + { + StatesChanged = (memcmp(ReportINData, HIDInterfaceInfo->Config.PrevReportINBuffer, ReportINSize) != 0); + memcpy(HIDInterfaceInfo->Config.PrevReportINBuffer, ReportINData, HIDInterfaceInfo->Config.PrevReportINBufferSize); + } + + if (ReportINSize && (ForceSend || StatesChanged || IdlePeriodElapsed)) + { + HIDInterfaceInfo->State.IdleMSRemaining = HIDInterfaceInfo->State.IdleCount; + + Endpoint_SelectEndpoint(HIDInterfaceInfo->Config.ReportINEndpoint.Address); + + if (ReportID) + Endpoint_Write_8(ReportID); + + Endpoint_Write_Stream_LE(ReportINData, ReportINSize, NULL); + + Endpoint_ClearIN(); + } + + HIDInterfaceInfo->State.PrevFrameNum = USB_Device_GetFrameNumber(); + } +} + +#endif + |