diff options
Diffstat (limited to 'LUFA/Drivers/USB/Class/Device/HID.c')
| -rw-r--r-- | LUFA/Drivers/USB/Class/Device/HID.c | 190 |
1 files changed, 190 insertions, 0 deletions
diff --git a/LUFA/Drivers/USB/Class/Device/HID.c b/LUFA/Drivers/USB/Class/Device/HID.c new file mode 100644 index 0000000..f538610 --- /dev/null +++ b/LUFA/Drivers/USB/Class/Device/HID.c @@ -0,0 +1,190 @@ +/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2010.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2010 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 disclaim 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 "../../HighLevel/USBMode.h"
+#if defined(USB_CAN_BE_DEVICE)
+
+#define __INCLUDE_FROM_HID_DRIVER
+#define __INCLUDE_FROM_HID_DEVICE_C
+#include "HID.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();
+ 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, ReportSize);
+ }
+
+ break;
+ case HID_REQ_GetProtocol:
+ if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))
+ {
+ Endpoint_ClearSETUP();
+ Endpoint_Write_Byte(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();
+ Endpoint_Write_Byte(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;
+
+ if (!(Endpoint_ConfigureEndpoint(HIDInterfaceInfo->Config.ReportINEndpointNumber, EP_TYPE_INTERRUPT,
+ ENDPOINT_DIR_IN, HIDInterfaceInfo->Config.ReportINEndpointSize,
+ HIDInterfaceInfo->Config.ReportINEndpointDoubleBank ? ENDPOINT_BANK_DOUBLE : ENDPOINT_BANK_SINGLE)))
+ {
+ return false;
+ }
+
+ return true;
+}
+
+void HID_Device_USBTask(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo)
+{
+ if (USB_DeviceState != DEVICE_STATE_Configured)
+ return;
+
+ Endpoint_SelectEndpoint(HIDInterfaceInfo->Config.ReportINEndpointNumber);
+
+ 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.ReportINEndpointNumber);
+
+ if (ReportID)
+ Endpoint_Write_Byte(ReportID);
+
+ Endpoint_Write_Stream_LE(ReportINData, ReportINSize, NO_STREAM_CALLBACK);
+
+ Endpoint_ClearIN();
+ }
+ }
+}
+
+#endif
+
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