Fixed SerialStream driver not setting stdin to the created serial stream.

[pub/USBasp.git] / Projects / Magstripe / Magstripe.c

diff --git a/Projects/Magstripe/Magstripe.c b/Projects/Magstripe/Magstripe.c
index aef7812..88950cc 100644 (file)
--- a/Projects/Magstripe/Magstripe.c
+++ b/Projects/Magstripe/Magstripe.c
@@ -1,22 +1,22 @@
 /*\r
              LUFA Library\r
 /*\r
              LUFA Library\r

-     Copyright (C) Dean Camera, 2009.\r
+     Copyright (C) Dean Camera, 2010.\r

               \r
   dean [at] fourwalledcubicle [dot] com\r
       www.fourwalledcubicle.com\r
 */\r
 \r
 /*\r
               \r
   dean [at] fourwalledcubicle [dot] com\r
       www.fourwalledcubicle.com\r
 */\r
 \r
 /*\r

-  Copyright 2009  Denver Gingerich (denver [at] ossguy [dot] com)\r
-  Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
-\r
-  Permission to use, copy, modify, and distribute this software\r
-  and its documentation for any purpose and without fee is hereby\r
-  granted, provided that the above copyright notice appear in all\r
-  copies and that both that the copyright notice and this\r
-  permission notice and warranty disclaimer appear in supporting\r
-  documentation, and that the name of the author not be used in\r
-  advertising or publicity pertaining to distribution of the\r
+  Copyright 2010  Denver Gingerich (denver [at] ossguy [dot] com)\r
+  Copyright 2010  Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+  Permission to use, copy, modify, distribute, and sell this \r
+  software and its documentation for any purpose is hereby granted\r
+  without fee, provided that the above copyright notice appear in \r
+  all copies and that both that the copyright notice and this\r
+  permission notice and warranty disclaimer appear in supporting \r
+  documentation, and that the name of the author not be used in \r
+  advertising or publicity pertaining to distribution of the \r

   software without specific, written prior permission.\r
 \r
   The author disclaim all warranties with regard to this\r
   software without specific, written prior permission.\r
 \r
   The author disclaim all warranties with regard to this\r


@@ -28,66 +28,67 @@
   arising out of or in connection with the use or performance of\r
   this software.\r
 */\r
   arising out of or in connection with the use or performance of\r
   this software.\r
 */\r

-\r
+ \r

 /** \file\r
  *\r
 /** \file\r
  *\r

- *  Main source file for the MagStripe application. This file contains the code which drives\r
- *  the USB keyboard interface from the magnetic card stripe reader device.\r
+ *  Main source file for the MagStripe reader program. This file contains the main tasks of\r
+ *  the project and is responsible for the initial application hardware configuration.\r

  */\r
  \r
 #include "Magstripe.h"\r
 \r
  */\r
  \r
 #include "Magstripe.h"\r
 \r

-/* Project Tags, for reading out using the ButtLoad project */\r
-BUTTLOADTAG(ProjName,    "Magstripe Reader");\r
-BUTTLOADTAG(BuildTime,   __TIME__);\r
-BUTTLOADTAG(BuildDate,   __DATE__);\r
-BUTTLOADTAG(LUFAVersion, "LUFA V" LUFA_VERSION_STRING);\r
-\r
-/* Scheduler Task List */\r
-TASK_LIST\r
-{\r
-       { Task: USB_USBTask          , TaskStatus: TASK_STOP },\r
-       { Task: USB_Keyboard_Report  , TaskStatus: TASK_STOP },\r
-       { Task: Magstripe_Read       , TaskStatus: TASK_STOP },\r
-};\r
-\r
-/* Global Variables */\r
-/** Indicates if the device is using Report Protocol mode, instead of Boot Protocol mode. Boot Protocol mode\r
- *  is a special reporting mode used by compatible PC BIOS to support USB keyboards before a full OS and USB\r
- *  driver has been loaded, by using predefined report structures indicated in the USB HID standard.\r
+/** Bit buffers to hold the read bits for each of the three magnetic card tracks before they are transmitted\r
+ *  to the host as keyboard presses.\r

  */\r
  */\r

-bool UsingReportProtocol = true;\r
+BitBuffer_t TrackDataBuffers[TOTAL_TRACKS];\r

 \r
 \r

-/** Total idle period in milliseconds set by the host via a SetIdle request, used to silence the report endpoint\r
- *  until the report data changes or the idle period elapsed. Generally used to implement hardware key repeats, or\r
- *  by some BIOS to reduce the number of reports when in Boot Protocol mode.\r
- */\r
-uint8_t IdleCount = 0;\r
+/** Pointer to the current track buffer being sent to the host. */\r
+BitBuffer_t* CurrentTrackBuffer = &TrackDataBuffers[TOTAL_TRACKS];\r

 \r
 \r

-/** Milliseconds remaining counter for the HID class SetIdle and GetIdle requests, used to silence the report\r
- *  endpoint for an amount of time indicated by the host or until the report changes.\r
- */\r
-uint16_t IdleMSRemaining = 0;\r
+/** Buffer to hold the previously generated Keyboard HID report, for comparison purposes inside the HID class driver. */\r
+uint8_t PrevKeyboardHIDReportBuffer[sizeof(USB_KeyboardReport_Data_t)];\r

 \r
 \r

-/** Circular buffer to hold the read bits from track 1 of the inserted magnetic card. */\r
-BitBuffer_t Track1Data;\r
+/** LUFA HID Class driver interface configuration and state information. This structure is\r
+ *  passed to all HID Class driver functions, so that multiple instances of the same class\r
+ *  within a device can be differentiated from one another.\r
+ */\r
+USB_ClassInfo_HID_Device_t Keyboard_HID_Interface =\r
+       {\r
+               .Config =\r
+                       {\r
+                               .InterfaceNumber            = 0,\r

 \r
 \r

-/** Circular buffer to hold the read bits from track 2 of the inserted magnetic card. */\r
-BitBuffer_t Track2Data;\r
+                               .ReportINEndpointNumber     = KEYBOARD_EPNUM,\r
+                               .ReportINEndpointSize       = KEYBOARD_EPSIZE,\r
+                               .ReportINEndpointDoubleBank = KEYBOARD_EPSIZE,\r

 \r
 \r

-/** Circular buffer to hold the read bits from track 3 of the inserted magnetic card. */\r
-BitBuffer_t Track3Data;\r
+                               .PrevReportINBuffer         = PrevKeyboardHIDReportBuffer,\r
+                               .PrevReportINBufferSize     = sizeof(PrevKeyboardHIDReportBuffer),\r
+                       },\r
+       };\r

 \r
 \r

-/** Delay counter between sucessive key strokes. This is to prevent the OS from ignoring multiple keys in a short\r
- *  period of time due to key repeats. Two milliseconds works for most OSes.\r
+/** Main program entry point. This routine contains the overall program flow, including initial\r
+ *  setup of all components and the main program loop.\r

  */\r
  */\r

-uint8_t KeyDelayRemaining;\r
+int main(void)\r
+{\r
+       SetupHardware();\r
+       \r
+       for (uint8_t Buffer = 0; Buffer < TOTAL_TRACKS; Buffer++)\r
+         BitBuffer_Init(&TrackDataBuffers[Buffer]);\r

 \r
 \r

+       for (;;)\r
+       {\r
+               if (Magstripe_GetStatus() & MAG_CARDPRESENT)\r
+                 ReadMagstripeData();\r

 \r
 \r

-/** Main program entry point. This routine configures the hardware required by the application, then\r
- *  starts the scheduler to run the application tasks.\r
- */\r
-int main(void)\r
+               HID_Device_USBTask(&Keyboard_HID_Interface);\r
+               USB_USBTask();\r
+       }\r
+}\r
+\r
+/** Configures the board hardware and chip peripherals for the demo's functionality. */\r
+void SetupHardware(void)\r

 {\r
        /* Disable watchdog if enabled by bootloader/fuses */\r
        MCUSR &= ~(1 << WDRF);\r
 {\r
        /* Disable watchdog if enabled by bootloader/fuses */\r
        MCUSR &= ~(1 << WDRF);\r


@@ -98,349 +99,116 @@ int main(void)
 \r
        /* Hardware Initialization */\r
        Magstripe_Init();\r
 \r
        /* Hardware Initialization */\r
        Magstripe_Init();\r

-       \r
-       /* Buffer Initialization */\r
-       BitBuffer_Init(&Track1Data);\r
-       BitBuffer_Init(&Track2Data);\r
-       BitBuffer_Init(&Track3Data);\r
-       \r
-       /* Millisecond timer initialization, with output compare interrupt enabled for the idle timing */\r
-       OCR0A  = 0xFA;\r
-       TCCR0A = (1 << WGM01);\r
-       TCCR0B = ((1 << CS01) | (1 << CS00));\r
-       TIMSK0 = (1 << OCIE0A);\r
-       \r
-       /* Initialize Scheduler so that it can be used */\r
-       Scheduler_Init();\r
-\r
-       /* Initialize USB Subsystem */\r

        USB_Init();\r
        USB_Init();\r

-       \r
-       /* Scheduling - routine never returns, so put this last in the main function */\r
-       Scheduler_Start();\r
-}\r
-\r
-/** Event handler for the USB_Connect event. This starts the USB task. */\r
-EVENT_HANDLER(USB_Connect)\r
-{\r
-       /* Start USB management task */\r
-       Scheduler_SetTaskMode(USB_USBTask, TASK_RUN);\r
-}\r
-\r
-/** Event handler for the USB_Disconnect event. This stops the USB and keyboard report tasks. */\r
-EVENT_HANDLER(USB_Disconnect)\r
-{\r
-       /* Stop running keyboard reporting, card reading and USB management tasks */\r
-       Scheduler_SetTaskMode(USB_Keyboard_Report, TASK_STOP);\r
-       Scheduler_SetTaskMode(USB_USBTask, TASK_STOP);\r
-       Scheduler_SetTaskMode(Magstripe_Read, TASK_STOP);\r
-}\r
-\r
-/** Event handler for the USB_ConfigurationChanged event. This configures the device's endpoints ready\r
- *  to relay reports to the host, and starts the keyboard report task.\r
- */\r
-EVENT_HANDLER(USB_ConfigurationChanged)\r
-{\r
-       /* Setup Keyboard Keycode Report Endpoint */\r
-       Endpoint_ConfigureEndpoint(KEYBOARD_EPNUM, EP_TYPE_INTERRUPT,\r
-                                      ENDPOINT_DIR_IN, KEYBOARD_EPSIZE,\r
-                                  ENDPOINT_BANK_SINGLE);\r
-       \r
-       /* Default to report protocol on connect */\r
-       UsingReportProtocol = true;\r
-\r
-       /* Start Keyboard reporting and card reading tasks */\r
-       Scheduler_SetTaskMode(USB_Keyboard_Report, TASK_RUN);\r
-       Scheduler_SetTaskMode(Magstripe_Read, TASK_RUN);\r

 }\r
 \r
 }\r
 \r

-/** Event handler for the USB_UnhandledControlPacket event. This is used to catch standard and class specific\r
- *  control requests that are not handled internally by the USB library, so that they can be handled appropriately\r
- *  for the application.\r
+/** Determines if a card has been inserted, and if so reads in each track's contents into the bit buffers\r
+ *  until they are read out to the host as a series of keyboard presses.\r

  */\r
  */\r

-EVENT_HANDLER(USB_UnhandledControlPacket)\r
+void ReadMagstripeData(void)\r

 {\r
 {\r

-       /* Handle HID Class specific requests */\r
-       switch (bRequest)\r
+       /* Arrays to hold the buffer pointers, clock and data bit masks for the separate card tracks */\r
+       const struct\r

        {\r
        {\r

-               case REQ_GetReport:\r
-                       if (bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))\r
-                       {\r
-                               USB_KeyboardReport_Data_t KeyboardReportData;\r
-\r
-                               /* Create the next keyboard report for transmission to the host */\r
-                               GetNextReport(&KeyboardReportData);\r
-\r
-                               /* Ignore report type and ID number value */\r
-                               Endpoint_Discard_Word();\r
-                               \r
-                               /* Ignore unused Interface number value */\r
-                               Endpoint_Discard_Word();\r
+               uint8_t ClockMask;\r
+               uint8_t DataMask;       \r
+       } TrackInfo[] = {{MAG_T1_CLOCK, MAG_T1_DATA},\r
+                        {MAG_T2_CLOCK, MAG_T2_DATA},\r
+                        {MAG_T3_CLOCK, MAG_T3_DATA}};\r

 \r
 \r

-                               /* Read in the number of bytes in the report to send to the host */\r
-                               uint16_t wLength = Endpoint_Read_Word_LE();\r
-                               \r
-                               /* If trying to send more bytes than exist to the host, clamp the value at the report size */\r
-                               if (wLength > sizeof(KeyboardReportData))\r
-                                 wLength = sizeof(KeyboardReportData);\r
+       uint8_t Magstripe_Prev = 0;\r
+       uint8_t Magstripe_LCL  = Magstripe_GetStatus();\r

 \r
 \r

-                               Endpoint_ClearSetupReceived();\r
-       \r
-                               /* Write the report data to the control endpoint */\r
-                               Endpoint_Write_Control_Stream_LE(&KeyboardReportData, wLength);\r
-                               \r
-                               /* Finalize the stream transfer to send the last packet or clear the host abort */\r
-                               Endpoint_ClearSetupOUT();\r
-                       }\r
+       while (Magstripe_LCL & MAG_CARDPRESENT)\r
+       {\r
+               for (uint8_t Track = 0; Track < TOTAL_TRACKS; Track++)\r
+               {\r
+                       bool DataPinLevel      = ((Magstripe_LCL & TrackInfo[Track].DataMask) != 0);\r
+                       bool ClockPinLevel     = ((Magstripe_LCL & TrackInfo[Track].ClockMask) != 0);\r
+                       bool ClockLevelChanged = (((Magstripe_LCL ^ Magstripe_Prev) & TrackInfo[Track].ClockMask) != 0);\r

                \r
                \r

-                       break;\r
-               case REQ_GetProtocol:\r
-                       if (bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))\r
-                       {\r
-                               Endpoint_ClearSetupReceived();\r
-                               \r
-                               /* Write the current protocol flag to the host */\r
-                               Endpoint_Write_Byte(UsingReportProtocol);\r
-                               \r
-                               /* Send the flag to the host */\r
-                               Endpoint_ClearSetupIN();\r
-\r
-                               /* Acknowledge status stage */\r
-                               while (!(Endpoint_IsSetupOUTReceived()));\r
-                               Endpoint_ClearSetupOUT();\r
-                       }\r
-                       \r
-                       break;\r
-               case REQ_SetProtocol:\r
-                       if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))\r
-                       {\r
-                               /* Read in the wValue parameter containing the new protocol mode */\r
-                               uint16_t wValue = Endpoint_Read_Word_LE();\r
-                               \r
-                               Endpoint_ClearSetupReceived();\r
+                       /* Sample data on rising clock edges from the card reader */\r
+                       if (ClockPinLevel && ClockLevelChanged)\r
+                         BitBuffer_StoreNextBit(&TrackDataBuffers[Track], DataPinLevel);\r
+               }\r

 \r
 \r

-                               /* Set or clear the flag depending on what the host indicates that the current Protocol should be */\r
-                               UsingReportProtocol = (wValue != 0x0000);\r
-                               \r
-                               /* Acknowledge status stage */\r
-                               while (!(Endpoint_IsSetupINReady()));\r
-                               Endpoint_ClearSetupIN();\r
-                       }\r
-                       \r
-                       break;\r
-               case REQ_SetIdle:\r
-                       if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))\r
-                       {\r
-                               /* Read in the wValue parameter containing the idle period */\r
-                               uint16_t wValue = Endpoint_Read_Word_LE();\r
-                               \r
-                               Endpoint_ClearSetupReceived();\r
-                               \r
-                               /* Get idle period in MSB */\r
-                               IdleCount = (wValue >> 8);\r
-                               \r
-                               /* Acknowledge status stage */\r
-                               while (!(Endpoint_IsSetupINReady()));\r
-                               Endpoint_ClearSetupIN();\r
-                       }\r
-                       \r
-                       break;\r
-               case REQ_GetIdle:\r
-                       if (bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))\r
-                       {               \r
-                               Endpoint_ClearSetupReceived();\r
-                               \r
-                               /* Write the current idle duration to the host */\r
-                               Endpoint_Write_Byte(IdleCount);\r
-                               \r
-                               /* Send the flag to the host */\r
-                               Endpoint_ClearSetupIN();\r
+               Magstripe_Prev = Magstripe_LCL;\r
+               Magstripe_LCL  = Magstripe_GetStatus();\r
+       }\r
+       \r
+       CurrentTrackBuffer = &TrackDataBuffers[0];\r
+}\r

 \r
 \r

-                               /* Acknowledge status stage */\r
-                               while (!(Endpoint_IsSetupOUTReceived()));\r
-                               Endpoint_ClearSetupOUT();\r
-                       }\r
+/** Event handler for the library USB Configuration Changed event. */\r
+void EVENT_USB_Device_ConfigurationChanged(void)\r
+{\r
+       HID_Device_ConfigureEndpoints(&Keyboard_HID_Interface);\r
+       \r
+       USB_Device_EnableSOFEvents();\r
+}\r

 \r
 \r

-                       break;\r
-       }\r
+/** Event handler for the library USB Unhandled Control Packet event. */\r
+void EVENT_USB_Device_UnhandledControlRequest(void)\r
+{\r
+       HID_Device_ProcessControlRequest(&Keyboard_HID_Interface);\r

 }\r
 \r
 }\r
 \r

-/** ISR for the timer 0 compare vector. This ISR fires once each millisecond, and decrements the counter indicating\r
- *  the number of milliseconds left to idle (not send the host reports) if the device has been instructed to idle\r
- *  by the host via a SetIdle class specific request.\r
- */\r
-ISR(TIMER0_COMPA_vect, ISR_BLOCK)\r
+/** Event handler for the USB device Start Of Frame event. */\r
+void EVENT_USB_Device_StartOfFrame(void)\r

 {\r
 {\r

-       /* One millisecond has elapsed, decrement the idle time remaining counter if it has not already elapsed */\r
-       if (IdleMSRemaining)\r
-         IdleMSRemaining--;\r
-         \r
-       if (KeyDelayRemaining)\r
-         KeyDelayRemaining--;\r
+       HID_Device_MillisecondElapsed(&Keyboard_HID_Interface);\r

 }\r
 \r
 }\r
 \r

-/** Constructs a keyboard report indicating the currently pressed keyboard keys to the host.\r
+/** HID class driver callback function for the creation of HID reports to the host.\r

  *\r
  *\r

- *  \param ReportData  Pointer to a USB_KeyboardReport_Data_t report structure where the resulting report should\r
- *                     be stored\r
+ *  \param[in] HIDInterfaceInfo  Pointer to the HID class interface configuration structure being referenced\r
+ *  \param[in,out] ReportID  Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID\r
+ *  \param[in] ReportType  Type of the report to create, either REPORT_ITEM_TYPE_In or REPORT_ITEM_TYPE_Feature\r
+ *  \param[out] ReportData  Pointer to a buffer where the created report should be stored\r
+ *  \param[out] ReportSize  Number of bytes written in the report (or zero if no report is to be sent\r

  *\r
  *\r

- *  \return Boolean true if the current report is different to the previous report, false otherwise\r
+ *  \return Boolean true to force the sending of the report, false to let the library determine if it needs to be sent\r

  */\r
  */\r

-bool GetNextReport(USB_KeyboardReport_Data_t* ReportData)\r
+bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, uint8_t* const ReportID,\r
+                                         const uint8_t ReportType, void* ReportData, uint16_t* ReportSize)\r

 {\r
 {\r

-       static bool OddReport   = false;\r
-       static bool MustRelease = false;\r
-       \r
-       BitBuffer_t* Buffer     = NULL;\r
+       USB_KeyboardReport_Data_t* KeyboardReport = (USB_KeyboardReport_Data_t*)ReportData;\r

 \r
 \r

-       /* Clear the report contents */\r
-       memset(ReportData, 0, sizeof(USB_KeyboardReport_Data_t));\r
+       static bool IsKeyReleaseReport;\r

 \r
 \r

-       /* Get the next non-empty track data buffer */\r
-       if (Track1Data.Elements)\r
-         Buffer = &Track1Data;\r
-       else if (Track2Data.Elements)\r
-         Buffer = &Track2Data;                 \r
-       else if (Track3Data.Elements)\r
-         Buffer = &Track3Data;\r
+       /* Key reports must be interleaved with key release reports, or repeated keys will be ignored */\r
+       IsKeyReleaseReport = !IsKeyReleaseReport;\r

 \r
 \r

-       if (Buffer != NULL)\r
+       if ((IsKeyReleaseReport) || (CurrentTrackBuffer == &TrackDataBuffers[TOTAL_TRACKS]))\r

        {\r
        {\r

-               /* Toggle the odd report number indicator */\r
-               OddReport   = !OddReport;\r
-               \r
-               /* Set the flag indicating that a null report must eventually be sent to release all pressed keys */\r
-               MustRelease = true;\r
-\r
-               /* Only send the next key on odd reports, so that they are interpersed with null reports to release keys */\r
-               if (OddReport)\r
-               {\r
-                       /* Set the report key code to the key code for the next data bit */\r
-                       ReportData->KeyCode = BitBuffer_GetNextBit(Buffer) ? KEY_1 : KEY_0;\r
-                       \r
-                       /* If buffer is now empty, a new line must be sent instead of the terminating bit */\r
-                       if (!(Buffer->Elements))\r
-                       {\r
-                               /* Set the keycode to the code for an enter key press */\r
-                               ReportData->KeyCode = KEY_ENTER;                                \r
-                       }\r
-               }\r
-\r
-               return true;\r
+               /* No more data to send, or key release report between key presses */\r
+               KeyboardReport->KeyCode[0] = KEY_NONE;\r

        }\r
        }\r

-       else if (MustRelease)\r
+       else if (!(CurrentTrackBuffer->Elements))\r

        {\r
        {\r

-               /* Leave key code to null (0), to release all pressed keys */\r
-               return true;\r
+               /* End of current track, send an enter press and change to the next track's buffer */\r
+               KeyboardReport->KeyCode[0] = KEY_ENTER;\r
+               CurrentTrackBuffer++;\r

        }\r
        }\r

-       \r
-       return false;\r
-}\r
-\r
-/** Task to read out data from inserted magnetic cards and place the seperate track data into their respective\r
- *  data buffers for later sending to the host as keyboard key presses.\r
- */\r
-TASK(Magstripe_Read)\r
-{\r
-       /* Arrays to hold the buffer pointers, clock and data bit masks for the seperate card tracks */\r
-       const struct\r
-       {\r
-               BitBuffer_t* Buffer;\r
-               uint8_t      ClockMask;\r
-               uint8_t      DataMask;  \r
-       } TrackInfo[] = {{&Track1Data, MAG_T1_CLOCK, MAG_T1_DATA},\r
-                        {&Track2Data, MAG_T2_CLOCK, MAG_T2_DATA},\r
-                        {&Track3Data, MAG_T3_CLOCK, MAG_T3_DATA}};\r
-\r
-       /* Previous magnetic card control line' status, for later comparison */\r
-       uint8_t Magstripe_Prev = 0;\r
-       \r
-       /* Buffered current card reader control line' status */\r
-       uint8_t Magstripe_LCL  = Magstripe_GetStatus();\r
-\r
-       /* Exit the task early if no card is present in the reader */\r
-       if (!(Magstripe_LCL & MAG_CARDPRESENT))\r
-         return;\r
-\r
-       /* Read out card data while a card is present */\r
-       while (Magstripe_LCL & MAG_CARDPRESENT)\r
+       else\r

        {\r
        {\r

-               /* Read out the next bit for each track of the card */\r
-               for (uint8_t Track = 0; Track < 3; Track++)\r
-               {\r
-                       /* Current data line status for the current card track */\r
-                       bool DataLevel    = ((Magstripe_LCL & TrackInfo[Track].DataMask) != 0);\r
-\r
-                       /* Current clock line status for the current card track */\r
-                       bool ClockLevel   = ((Magstripe_LCL & TrackInfo[Track].ClockMask) != 0);\r
-\r
-                       /* Current track clock transition check */\r
-                       bool ClockChanged = (((Magstripe_LCL ^ Magstripe_Prev) & TrackInfo[Track].ClockMask) != 0);\r
-               \r
-                       /* Sample the next bit on the falling edge of the track's clock line, store key code into the track's buffer */\r
-                       if (ClockLevel && ClockChanged)\r
-                         BitBuffer_StoreNextBit(TrackInfo[Track].Buffer, DataLevel);\r
-               }\r
-\r
-               /* Retain the current card reader control line states for later edge detection */\r
-               Magstripe_Prev = Magstripe_LCL;\r
-               \r
-               /* Retrieve the new card reader control line states */\r
-               Magstripe_LCL  = Magstripe_GetStatus();\r
+               /* Still data in the current track; convert next bit to a 1 or 0 keypress */\r
+               KeyboardReport->KeyCode[0] = BitBuffer_GetNextBit(CurrentTrackBuffer) ? KEY_1 : KEY_0;\r

        }\r
        \r
        }\r
        \r

-       /* Add terminators to the end of each track buffer */\r
-       BitBuffer_StoreNextBit(&Track1Data, 0);\r
-       BitBuffer_StoreNextBit(&Track2Data, 0);\r
-       BitBuffer_StoreNextBit(&Track3Data, 0);\r
+       *ReportSize = sizeof(USB_KeyboardReport_Data_t);\r
+       return false;\r

 }\r
 \r
 }\r
 \r

-/** Task for the magnetic card reading and keyboard report generation. This task waits until a card is inserted,\r
- *  then reads off the card data and sends it to the host as a series of keyboard keypresses via keyboard reports.\r
+/** HID Class driver callback function for the processing of a received HID report from the host.\r
+ *\r
+ *  \param[in] HIDInterfaceInfo  Pointer to the HID interface structure for the HID interface being referenced\r
+ *  \param[in] ReportID          Report ID of the received report from the host\r
+ *  \param[in] ReportData        Pointer to the report buffer where the received report is stored\r
+ *  \param[in] ReportSize        Size in bytes of the report received from the host\r

  */\r
  */\r

-TASK(USB_Keyboard_Report)\r
+void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo, const uint8_t ReportID,\r
+                                          const void* ReportData, const uint16_t ReportSize)\r

 {\r
 {\r

-       USB_KeyboardReport_Data_t KeyboardReportData;\r
-       bool                      SendReport = false;\r
-       \r
-       /* Check if the USB system is connected to a host */\r
-       if (USB_IsConnected)\r
-       {\r
-               /* Select the Keyboard Report Endpoint */\r
-               Endpoint_SelectEndpoint(KEYBOARD_EPNUM);\r
-\r
-               /* Check if Keyboard Endpoint Ready for Read/Write */\r
-               if (Endpoint_ReadWriteAllowed())\r
-               {\r
-                       /* Only fetch the next key to send once the period between key presses has elapsed */\r
-                       if (!(KeyDelayRemaining))\r
-                       {\r
-                               /* Create the next keyboard report for transmission to the host */\r
-                               SendReport = GetNextReport(&KeyboardReportData);\r
-                       }\r
-                       \r
-                       /* Check if the idle period is set and has elapsed */\r
-                       if (IdleCount && !(IdleMSRemaining))\r
-                       {\r
-                               /* Idle period elapsed, indicate that a report must be sent */\r
-                               SendReport = true;\r
-                               \r
-                               /* Reset the idle time remaining counter, must multiply by 4 to get the duration in milliseconds */\r
-                               IdleMSRemaining = (IdleCount << 2);\r
-                       }\r
-\r
-                       /* Write the keyboard report if a report is to be sent to the host */\r
-                       if (SendReport)\r
-                       {\r
-                               /* Write Keyboard Report Data */\r
-                               Endpoint_Write_Stream_LE(&KeyboardReportData, sizeof(USB_KeyboardReport_Data_t));\r
-\r
-                               /* Finalize the stream transfer to send the last packet */\r
-                               Endpoint_ClearCurrentBank();\r
-\r
-                               /* Reset the key delay period counter */\r
-                               KeyDelayRemaining = 2;\r
-                       }\r
-               }\r
-       }\r
+       // Unused (but mandatory for the HID class driver) in this demo, since there are no Host->Device reports\r

 }\r
 }\r