X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/864196c884ef3602aee44f1a68aceb5819a07f21..a9d5e129b76449c73a853af450d7d353512cd3a0:/Demos/Device/ClassDriver/GenericHID/GenericHID.c?ds=sidebyside

diff --git a/Demos/Device/ClassDriver/GenericHID/GenericHID.c b/Demos/Device/ClassDriver/GenericHID/GenericHID.c
index 72063b6fa..13db6bf74 100644
--- a/Demos/Device/ClassDriver/GenericHID/GenericHID.c
+++ b/Demos/Device/ClassDriver/GenericHID/GenericHID.c
@@ -36,6 +36,17 @@
 
 #include "GenericHID.h"
 
+/** Buffer to hold the previously generated HID report, for comparison purposes inside the HID class driver. */
+uint8_t PrevHIDReportBuffer[GENERIC_REPORT_SIZE];
+
+/** Structure to contain reports from the host, so that they can be echoed back upon request */
+struct
+{
+	uint8_t ReportID;
+	uint16_t ReportSize;
+	uint8_t ReportData[GENERIC_REPORT_SIZE];
+} HIDReportEcho;
+
 /** LUFA HID Class driver interface configuration and state information. This structure is
  *  passed to all HID Class driver functions, so that multiple instances of the same class
  *  within a device can be differentiated from one another.
@@ -49,7 +60,8 @@ USB_ClassInfo_HID_Device_t Generic_HID_Interface =
 				.ReportINEndpointNumber  = GENERIC_IN_EPNUM,
 				.ReportINEndpointSize    = GENERIC_EPSIZE,
 				
-				.ReportINBufferSize      = GENERIC_REPORT_SIZE,
+				.PrevReportINBuffer      = PrevHIDReportBuffer,
+				.PrevReportINBufferSize  = sizeof(PrevHIDReportBuffer),
 			},
 	};
 
@@ -91,19 +103,19 @@ void SetupHardware(void)
 }
 
 /** Event handler for the library USB Connection event. */
-void EVENT_USB_Connect(void)
+void EVENT_USB_Device_Connect(void)
 {
 	LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
 }
 
 /** Event handler for the library USB Disconnection event. */
-void EVENT_USB_Disconnect(void)
+void EVENT_USB_Device_Disconnect(void)
 {
 	LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
 }
 
 /** Event handler for the library USB Configuration Changed event. */
-void EVENT_USB_ConfigurationChanged(void)
+void EVENT_USB_Device_ConfigurationChanged(void)
 {
 	LEDs_SetAllLEDs(LEDMASK_USB_READY);
 
@@ -111,17 +123,16 @@ void EVENT_USB_ConfigurationChanged(void)
 	  LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
 }
 
-/** Event handler for the library USB Unhandled Control Packet event. */
-void EVENT_USB_UnhandledControlPacket(void)
+/** Event handler for the library USB Unhandled Control Request event. */
+void EVENT_USB_Device_UnhandledControlRequest(void)
 {
-	HID_Device_ProcessControlPacket(&Generic_HID_Interface);
+	HID_Device_ProcessControlRequest(&Generic_HID_Interface);
 }
 
 /** ISR to keep track of each millisecond interrupt, for determining the HID class idle period remaining when set. */
 ISR(TIMER0_COMPA_vect, ISR_BLOCK)
 {
-	if (Generic_HID_Interface.State.IdleMSRemaining)
-	  Generic_HID_Interface.State.IdleMSRemaining--;
+	HID_Device_MillisecondElapsed(&Generic_HID_Interface);
 }
 
 /** HID class driver callback function for the creation of HID reports to the host.
@@ -129,14 +140,20 @@ ISR(TIMER0_COMPA_vect, ISR_BLOCK)
  *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced
  *  \param[in,out] ReportID  Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID
  *  \param[out] ReportData  Pointer to a buffer where the created report should be stored
+ *  \param[out] ReportSize  Number of bytes written in the report (or zero if no report is to be sent
  *
- *  \return Number of bytes written in the report (or zero if no report is to be sent
+ *  \return Boolean true to force the sending of the report, false to let the library determine if it needs to be sent
  */
-uint16_t CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, uint8_t* const ReportID, void* ReportData)
+bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, uint8_t* const ReportID,
+                                         void* ReportData, uint16_t* ReportSize)
 {
-	// Create generic HID report here
+	if (HIDReportEcho.ReportID)
+	  *ReportID = HIDReportEcho.ReportID;
+
+	memcpy(ReportData, HIDReportEcho.ReportData, HIDReportEcho.ReportSize);
 	
-	return 0;
+	*ReportSize = HIDReportEcho.ReportSize;
+	return true;
 }
 
 /** HID class driver callback function for the processing of HID reports from the host.
@@ -149,5 +166,7 @@ uint16_t CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const H
 void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, const uint8_t ReportID,
                                           const void* ReportData, const uint16_t ReportSize)
 {
-	// Process received generic HID report here
+	HIDReportEcho.ReportID   = ReportID;
+	HIDReportEcho.ReportSize = ReportSize;
+	memcpy(HIDReportEcho.ReportData, ReportData, ReportSize);
 }