-/*\r
- LUFA Library\r
- Copyright (C) Dean Camera, 2009.\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
- software without specific, written prior permission.\r
-\r
- The author disclaim all warranties with regard to this\r
- software, including all implied warranties of merchantability\r
- and fitness. In no event shall the author be liable for any\r
- special, indirect or consequential damages or any damages\r
- whatsoever resulting from loss of use, data or profits, whether\r
- in an action of contract, negligence or other tortious action,\r
- arising out of or in connection with the use or performance of\r
- this software.\r
-*/\r
- \r
-/** \file\r
- *\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
-/** 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
-BitBuffer_t TrackDataBuffers[3];\r
-\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
- .InterfaceNumber = 0,\r
-\r
- .ReportINEndpointNumber = KEYBOARD_EPNUM,\r
- .ReportINEndpointSize = KEYBOARD_EPSIZE,\r
- \r
- .ReportINBufferSize = sizeof(USB_KeyboardReport_Data_t),\r
- };\r
-\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
-int main(void)\r
-{\r
- SetupHardware();\r
- \r
- for (uint8_t Buffer = 0; Buffer < 3; Buffer++)\r
- BitBuffer_Init(&TrackDataBuffers[Buffer]);\r
-\r
- for (;;)\r
- {\r
- if (Magstripe_GetStatus() & MAG_CARDPRESENT)\r
- ReadMagstripeData();\r
-\r
- USB_HID_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
- wdt_disable();\r
-\r
- /* Disable clock division */\r
- clock_prescale_set(clock_div_1);\r
-\r
- /* Hardware Initialization */\r
- Magstripe_Init();\r
- USB_Init();\r
-\r
- /* Millisecond timer initialization, with output compare interrupt enabled for the idle timing */\r
- OCR0A = ((F_CPU / 64) / 1000);\r
- TCCR0A = (1 << WGM01);\r
- TCCR0B = ((1 << CS01) | (1 << CS00));\r
- TIMSK0 = (1 << OCIE0A);\r
-}\r
-\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
-void ReadMagstripeData(void)\r
-{\r
- /* Arrays to hold the buffer pointers, clock and data bit masks for the separate card tracks */\r
- const struct\r
- {\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
- uint8_t Magstripe_Prev = 0;\r
- uint8_t Magstripe_LCL = Magstripe_GetStatus();\r
-\r
- while (Magstripe_LCL & MAG_CARDPRESENT)\r
- {\r
- for (uint8_t Track = 0; Track < 3; 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
- if (ClockPinLevel && ClockLevelChanged)\r
- BitBuffer_StoreNextBit(&TrackDataBuffers[Track], DataPinLevel);\r
- }\r
-\r
- Magstripe_Prev = Magstripe_LCL;\r
- Magstripe_LCL = Magstripe_GetStatus();\r
- }\r
-}\r
-\r
-/** Event handler for the library USB Configuration Changed event. */\r
-void EVENT_USB_ConfigurationChanged(void)\r
-{\r
- USB_HID_ConfigureEndpoints(&Keyboard_HID_Interface);\r
-}\r
-\r
-/** Event handler for the library USB Unhandled Control Packet event. */\r
-void EVENT_USB_UnhandledControlPacket(void)\r
-{\r
- USB_HID_ProcessControlPacket(&Keyboard_HID_Interface);\r
-}\r
-\r
-/** Timer 0 CTC ISR, firing once each millisecond to keep track of elapsed idle time in the HID interface. */\r
-ISR(TIMER0_COMPA_vect, ISR_BLOCK)\r
-{\r
- if (Keyboard_HID_Interface.IdleMSRemaining)\r
- Keyboard_HID_Interface.IdleMSRemaining--;\r
-}\r
-\r
-/** HID Class driver callback function for the creation of a HID report for the host.\r
- *\r
- * \param HIDInterfaceInfo Pointer to the HID interface structure for the HID interface being referenced\r
- * \param ReportID Report ID requested by the host if non-zero, otherwise callback should set to the generated report ID\r
- * \param ReportData Pointer to the preallocated report buffer where the created report should be stored\r
- *\r
- * \return Number of bytes in the created report\r
- */\r
-uint16_t CALLBACK_USB_HID_CreateNextHIDReport(USB_ClassInfo_HID_Device_t* HIDInterfaceInfo, uint8_t* ReportID, void* ReportData)\r
-{\r
- static bool IsKeyReleaseReport;\r
- static bool IsNewlineReport;\r
-\r
- BitBuffer_t* Buffer = NULL;\r
- USB_KeyboardReport_Data_t* KeyboardReport = (USB_KeyboardReport_Data_t*)ReportData;\r
- \r
- /* Key reports must be interleaved with 0 Key Code reports to release the keys, or repeated keys will be ignored */\r
- IsKeyReleaseReport = !IsKeyReleaseReport; \r
-\r
- if (IsKeyReleaseReport)\r
- {\r
- KeyboardReport->KeyCode = 0;\r
- }\r
- else if (IsNewlineReport)\r
- {\r
- IsNewlineReport = false;\r
- KeyboardReport->KeyCode = KEY_ENTER;\r
- }\r
- else\r
- {\r
- if (TrackDataBuffers[0].Elements)\r
- Buffer = &TrackDataBuffers[0];\r
- else if (TrackDataBuffers[1].Elements)\r
- Buffer = &TrackDataBuffers[1]; \r
- else if (TrackDataBuffers[2].Elements)\r
- Buffer = &TrackDataBuffers[2];\r
- else\r
- return 0;\r
-\r
- KeyboardReport->KeyCode = BitBuffer_GetNextBit(Buffer) ? KEY_1 : KEY_0;\r
- \r
- /* If buffer now empty, next report must be a newline to seperate track data */\r
- if (!(Buffer->Elements))\r
- IsNewlineReport = true;\r
- }\r
- \r
- return sizeof(USB_KeyboardReport_Data_t);\r
-}\r
-\r
-/** HID Class driver callback function for the processing of a received HID report from the host.\r
- *\r
- * \param HIDInterfaceInfo Pointer to the HID interface structure for the HID interface being referenced\r
- * \param ReportID Report ID of the received report from the host\r
- * \param ReportData Pointer to the report buffer where the received report is stored\r
- * \param ReportSize Size in bytes of the report received from the host\r
- */\r
-void CALLBACK_USB_HID_ProcessReceivedHIDReport(USB_ClassInfo_HID_Device_t* HIDInterfaceInfo, uint8_t ReportID,\r
- void* ReportData, uint16_t ReportSize)\r
-{\r
- // Unused (but mandatory for the HID class driver) in this demo, since there are no Host->Device reports\r
-}\r
+/*
+ LUFA Library
+ Copyright (C) Dean Camera, 2013.
+
+ dean [at] fourwalledcubicle [dot] com
+ www.lufa-lib.org
+*/
+
+/*
+ Copyright 2010 Denver Gingerich (denver [at] ossguy [dot] com)
+ Copyright 2013 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.
+*/
+
+/** \file
+ *
+ * Main source file for the MagStripe reader program. This file contains the main tasks of
+ * the project and is responsible for the initial application hardware configuration.
+ */
+
+#include "Magstripe.h"
+
+/** Bit buffers to hold the read bits for each of the three magnetic card tracks before they are transmitted
+ * to the host as keyboard presses.
+ */
+static BitBuffer_t TrackDataBuffers[TOTAL_TRACKS];
+
+/** Pointer to the current track buffer being sent to the host. */
+static BitBuffer_t* CurrentTrackBuffer = &TrackDataBuffers[TOTAL_TRACKS];
+
+/** Buffer to hold the previously generated Keyboard HID report, for comparison purposes inside the HID class driver. */
+static uint8_t PrevKeyboardHIDReportBuffer[sizeof(USB_KeyboardReport_Data_t)];
+
+/** 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.
+ */
+USB_ClassInfo_HID_Device_t Keyboard_HID_Interface =
+ {
+ .Config =
+ {
+ .InterfaceNumber = 0,
+ .ReportINEndpoint =
+ {
+ .Address = KEYBOARD_EPADDR,
+ .Size = KEYBOARD_EPSIZE,
+ .Banks = 1,
+ },
+ .PrevReportINBuffer = PrevKeyboardHIDReportBuffer,
+ .PrevReportINBufferSize = sizeof(PrevKeyboardHIDReportBuffer),
+ },
+ };
+
+
+/** Main program entry point. This routine contains the overall program flow, including initial
+ * setup of all components and the main program loop.
+ */
+int main(void)
+{
+ SetupHardware();
+
+ for (uint8_t Buffer = 0; Buffer < TOTAL_TRACKS; Buffer++)
+ BitBuffer_Init(&TrackDataBuffers[Buffer]);
+
+ GlobalInterruptEnable();
+
+ for (;;)
+ {
+ if (Magstripe_GetStatus() & MAG_CARDPRESENT)
+ ReadMagstripeData();
+
+ HID_Device_USBTask(&Keyboard_HID_Interface);
+ USB_USBTask();
+ }
+}
+
+/** Configures the board hardware and chip peripherals for the demo's functionality. */
+void SetupHardware(void)
+{
+ /* Disable watchdog if enabled by bootloader/fuses */
+ MCUSR &= ~(1 << WDRF);
+ wdt_disable();
+
+ /* Disable clock division */
+ clock_prescale_set(clock_div_1);
+
+ /* Hardware Initialization */
+ Magstripe_Init();
+ USB_Init();
+}
+
+/** Determines if a card has been inserted, and if so reads in each track's contents into the bit buffers
+ * until they are read out to the host as a series of keyboard presses.
+ */
+void ReadMagstripeData(void)
+{
+ /* Arrays to hold the buffer pointers, clock and data bit masks for the separate card tracks */
+ const struct
+ {
+ uint8_t ClockMask;
+ uint8_t DataMask;
+ } TrackInfo[] = {{MAG_T1_CLOCK, MAG_T1_DATA},
+ {MAG_T2_CLOCK, MAG_T2_DATA},
+ {MAG_T3_CLOCK, MAG_T3_DATA}};
+
+ uint8_t Magstripe_Prev = 0;
+ uint8_t Magstripe_LCL = Magstripe_GetStatus();
+
+ while (Magstripe_LCL & MAG_CARDPRESENT)
+ {
+ for (uint8_t Track = 0; Track < TOTAL_TRACKS; Track++)
+ {
+ bool DataPinLevel = ((Magstripe_LCL & TrackInfo[Track].DataMask) != 0);
+ bool ClockPinLevel = ((Magstripe_LCL & TrackInfo[Track].ClockMask) != 0);
+ bool ClockLevelChanged = (((Magstripe_LCL ^ Magstripe_Prev) & TrackInfo[Track].ClockMask) != 0);
+
+ /* Sample data on rising clock edges from the card reader */
+ if (ClockPinLevel && ClockLevelChanged)
+ BitBuffer_StoreNextBit(&TrackDataBuffers[Track], DataPinLevel);
+ }
+
+ Magstripe_Prev = Magstripe_LCL;
+ Magstripe_LCL = Magstripe_GetStatus();
+ }
+
+ CurrentTrackBuffer = &TrackDataBuffers[0];
+}
+
+/** Event handler for the library USB Configuration Changed event. */
+void EVENT_USB_Device_ConfigurationChanged(void)
+{
+ HID_Device_ConfigureEndpoints(&Keyboard_HID_Interface);
+
+ USB_Device_EnableSOFEvents();
+}
+
+/** Event handler for the library USB Control Request reception event. */
+void EVENT_USB_Device_ControlRequest(void)
+{
+ HID_Device_ProcessControlRequest(&Keyboard_HID_Interface);
+}
+
+/** Event handler for the USB device Start Of Frame event. */
+void EVENT_USB_Device_StartOfFrame(void)
+{
+ HID_Device_MillisecondElapsed(&Keyboard_HID_Interface);
+}
+
+/** HID class driver callback function for the creation of HID reports to the host.
+ *
+ * \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[in] ReportType Type of the report to create, either HID_REPORT_ITEM_In or HID_REPORT_ITEM_Feature
+ * \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 Boolean \c true to force the sending of the report, \c false to let the library determine if it needs to be sent
+ */
+bool CALLBACK_HID_Device_CreateHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
+ uint8_t* const ReportID,
+ const uint8_t ReportType,
+ void* ReportData,
+ uint16_t* const ReportSize)
+{
+ USB_KeyboardReport_Data_t* KeyboardReport = (USB_KeyboardReport_Data_t*)ReportData;
+
+ static bool IsKeyReleaseReport;
+
+ /* Key reports must be interleaved with key release reports, or repeated keys will be ignored */
+ IsKeyReleaseReport = !IsKeyReleaseReport;
+
+ if ((IsKeyReleaseReport) || (CurrentTrackBuffer == &TrackDataBuffers[TOTAL_TRACKS]))
+ {
+ /* No more data to send, or key release report between key presses */
+ KeyboardReport->KeyCode[0] = KEY_NONE;
+ }
+ else if (!(CurrentTrackBuffer->Elements))
+ {
+ /* End of current track, send an enter press and change to the next track's buffer */
+ KeyboardReport->KeyCode[0] = KEY_ENTER;
+ CurrentTrackBuffer++;
+ }
+ else
+ {
+ /* Still data in the current track; convert next bit to a 1 or 0 keypress */
+ KeyboardReport->KeyCode[0] = BitBuffer_GetNextBit(CurrentTrackBuffer) ? KEY_1 : KEY_0;
+ }
+
+ *ReportSize = sizeof(USB_KeyboardReport_Data_t);
+ return false;
+}
+
+/** HID Class driver callback function for the processing of a received HID report from the host.
+ *
+ * \param[in] HIDInterfaceInfo Pointer to the HID interface structure for the HID interface being referenced
+ * \param[in] ReportID Report ID of the received report from the host
+ * \param[in] ReportType The type of report that the host has sent, either HID_REPORT_ITEM_Out or HID_REPORT_ITEM_Feature
+ * \param[in] ReportData Pointer to the report buffer where the received report is stored
+ * \param[in] ReportSize Size in bytes of the report received from the host
+ */
+void CALLBACK_HID_Device_ProcessHIDReport(USB_ClassInfo_HID_Device_t* const HIDInterfaceInfo,
+ const uint8_t ReportID,
+ const uint8_t ReportType,
+ const void* ReportData,
+ const uint16_t ReportSize)
+{
+ // Ignore keyboard LED reports from the host, but still need to declare the callback routine
+}
+
projects / pub / USBasp.git / blobdiff