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+/*
+ 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.
+*/
+
+/** \file
+ *
+ * Main source file for the HIDReportViewer project. This file contains the main tasks of
+ * the project and is responsible for the initial application hardware configuration.
+ */
+
+#include "HIDReportViewer.h"
+
+/** Processed HID report descriptor items structure, containing information on each HID report element */
+static HID_ReportInfo_t HIDReportInfo;
+
+/** 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_Host_t Device_HID_Interface =
+ {
+ .Config =
+ {
+ .DataINPipe =
+ {
+ .Address = (PIPE_DIR_IN | 1),
+ .Banks = 1,
+ },
+ .DataOUTPipe =
+ {
+ .Address = (PIPE_DIR_OUT | 2),
+ .Banks = 1,
+ },
+ .HIDInterfaceProtocol = HID_CSCP_NonBootProtocol,
+ .HIDParserData = &HIDReportInfo
+ },
+ };
+
+
+/** Main program entry point. This routine configures the hardware required by the application, then
+ * enters a loop to run the application tasks in sequence.
+ */
+int main(void)
+{
+ SetupHardware();
+
+ puts_P(PSTR(ESC_FG_CYAN "HID Device Report Viewer Running.\r\n" ESC_FG_WHITE));
+
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+ GlobalInterruptEnable();
+
+ for (;;)
+ {
+ RetrieveDeviceData();
+
+ HID_Host_USBTask(&Device_HID_Interface);
+ USB_USBTask();
+ }
+}
+
+/** Task to retrieve the HID device information from an attached device, and output
+ * the relevant data to the serial port for analysis.
+ */
+void RetrieveDeviceData(void)
+{
+ if (USB_HostState != HOST_STATE_Configured)
+ return;
+
+ LEDs_SetAllLEDs(LEDMASK_USB_BUSY);
+
+ OutputReportSizes();
+ OutputParsedReportItems();
+
+ LEDs_SetAllLEDs(LEDMASK_USB_READY);
+ USB_Host_SetDeviceConfiguration(0);
+}
+
+/** Prints a summary of the device's HID report sizes from the HID parser output to the serial port
+ * for display to the user.
+ */
+void OutputReportSizes(void)
+{
+ printf_P(PSTR("\r\n\r\nTotal Device Reports: %" PRId8 "\r\n"), HIDReportInfo.TotalDeviceReports);
+
+ for (uint8_t ReportIndex = 0; ReportIndex < HIDReportInfo.TotalDeviceReports; ReportIndex++)
+ {
+ const HID_ReportSizeInfo_t* CurrReportIDInfo = &HIDReportInfo.ReportIDSizes[ReportIndex];
+
+ uint8_t ReportSizeInBits = CurrReportIDInfo->ReportSizeBits[HID_REPORT_ITEM_In];
+ uint8_t ReportSizeOutBits = CurrReportIDInfo->ReportSizeBits[HID_REPORT_ITEM_Out];
+ uint8_t ReportSizeFeatureBits = CurrReportIDInfo->ReportSizeBits[HID_REPORT_ITEM_Feature];
+
+ /* Print out the byte sizes of each report within the device */
+ printf_P(PSTR(" + Report ID 0x%02" PRIX8 "\r\n"
+ " - Input Data: %" PRId8 " bits (%" PRId8 " bytes)\r\n"
+ " - Output Data: %" PRId8 " bits (%" PRId8 " bytes)\r\n"
+ " - Feature Data: %" PRId8 " bits (%" PRId8 " bytes)\r\n"),
+ CurrReportIDInfo->ReportID,
+ ReportSizeInBits,
+ ((ReportSizeInBits >> 3) + ((ReportSizeInBits & 0x07) != 0)),
+ ReportSizeOutBits,
+ ((ReportSizeOutBits >> 3) + ((ReportSizeOutBits & 0x07) != 0)),
+ ReportSizeFeatureBits,
+ ((ReportSizeFeatureBits >> 3) + ((ReportSizeFeatureBits & 0x07) != 0)));
+ }
+}
+
+/** Prints a summary of the device's parsed and stored report items along with their attributes
+ * to the serial port for display to the user.
+ */
+void OutputParsedReportItems(void)
+{
+ printf_P(PSTR("\r\nReport Items (%" PRId8 " in Table):\r\n"), HIDReportInfo.TotalReportItems);
+
+ for (uint8_t ItemIndex = 0; ItemIndex < HIDReportInfo.TotalReportItems; ItemIndex++)
+ {
+ const HID_ReportItem_t* RItem = &HIDReportInfo.ReportItems[ItemIndex];
+
+ printf_P(PSTR(" + Item %" PRId8 ":\r\n"
+ " - Report ID: 0x%02" PRIX8 "\r\n"
+ " - Data Direction: %s\r\n"
+ " - Item Flags: 0x%02" PRIX8 "\r\n"
+ " - Item Offset (Bits): 0x%02" PRIX8 "\r\n"
+ " - Item Size (Bits): 0x%02" PRIX8 "\r\n"
+ " - Usage Page: 0x%04" PRIX16 "\r\n"
+ " - Usage: 0x%04" PRIX16 "\r\n"
+ " - Unit Type: 0x%08" PRIX32 "\r\n"
+ " - Unit Exponent: 0x%02" PRIX8 "\r\n"
+ " - Logical Minimum: 0x%08" PRIX32 "\r\n"
+ " - Logical Maximum: 0x%08" PRIX32 "\r\n"
+ " - Physical Minimum: 0x%08" PRIX32 "\r\n"
+ " - Physical Maximum: 0x%08" PRIX32 "\r\n"
+ " - Collection Path:\r\n"),
+ ItemIndex,
+ RItem->ReportID,
+ ((RItem->ItemType == HID_REPORT_ITEM_In) ? "IN" : ((RItem->ItemType == HID_REPORT_ITEM_Out) ? "OUT" : "FEATURE")),
+ RItem->ItemFlags,
+ RItem->BitOffset,
+ RItem->Attributes.BitSize,
+ RItem->Attributes.Usage.Page,
+ RItem->Attributes.Usage.Usage,
+ RItem->Attributes.Unit.Type,
+ RItem->Attributes.Unit.Exponent,
+ RItem->Attributes.Logical.Minimum,
+ RItem->Attributes.Logical.Maximum,
+ RItem->Attributes.Physical.Minimum,
+ RItem->Attributes.Physical.Maximum);
+
+ OutputCollectionPath(RItem->CollectionPath);
+ }
+}
+
+/** Prints the HID Collection path (along with each node's attributes) to the serial port
+ * for display to the user, from the given starting node to the root node.
+ *
+ * \param[in] CollectionPath Starting HID Collection node to print
+ */
+void OutputCollectionPath(const HID_CollectionPath_t* const CollectionPath)
+{
+ const HID_CollectionPath_t* CurrentNode = CollectionPath;
+
+ while (CurrentNode != NULL)
+ {
+ printf_P(PSTR(" |\r\n"
+ " - Type: 0x%02" PRIX8 "\r\n"
+ " - Usage: 0x%02" PRIX8 "\r\n"),
+ CurrentNode->Type, CurrentNode->Usage);
+
+ CurrentNode = CurrentNode->Parent;
+ }
+
+ printf_P(PSTR(" |\r\n"
+ " END\r\n"));
+}
+
+/** Configures the board hardware and chip peripherals for the demo's functionality. */
+void SetupHardware(void)
+{
+#if (ARCH == ARCH_AVR8)
+ /* Disable watchdog if enabled by bootloader/fuses */
+ MCUSR &= ~(1 << WDRF);
+ wdt_disable();
+
+ /* Disable clock division */
+ clock_prescale_set(clock_div_1);
+#endif
+
+ /* Hardware Initialization */
+ Serial_Init(9600, false);
+ LEDs_Init();
+ USB_Init();
+
+ /* Create a stdio stream for the serial port for stdin and stdout */
+ Serial_CreateStream(NULL);
+}
+
+/** Event handler for the USB_DeviceAttached event. This indicates that a device has been attached to the host, and
+ * starts the library USB task to begin the enumeration and USB management process.
+ */
+void EVENT_USB_Host_DeviceAttached(void)
+{
+ puts_P(PSTR("Device Attached.\r\n"));
+ LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
+}
+
+/** Event handler for the USB_DeviceUnattached event. This indicates that a device has been removed from the host, and
+ * stops the library USB task management process.
+ */
+void EVENT_USB_Host_DeviceUnattached(void)
+{
+ puts_P(PSTR("\r\nDevice Unattached.\r\n"));
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);
+}
+
+/** Event handler for the USB_DeviceEnumerationComplete event. This indicates that a device has been successfully
+ * enumerated by the host and is now ready to be used by the application.
+ */
+void EVENT_USB_Host_DeviceEnumerationComplete(void)
+{
+ LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);
+
+ uint16_t ConfigDescriptorSize;
+ uint8_t ConfigDescriptorData[512];
+
+ if (USB_Host_GetDeviceConfigDescriptor(1, &ConfigDescriptorSize, ConfigDescriptorData,
+ sizeof(ConfigDescriptorData)) != HOST_GETCONFIG_Successful)
+ {
+ puts_P(PSTR("Error Retrieving Configuration Descriptor.\r\n"));
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+ return;
+ }
+
+ if (HID_Host_ConfigurePipes(&Device_HID_Interface,
+ ConfigDescriptorSize, ConfigDescriptorData) != HID_ENUMERROR_NoError)
+ {
+ puts_P(PSTR("Attached Device Not a Valid HID Device.\r\n"));
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+ return;
+ }
+
+ if (USB_Host_SetDeviceConfiguration(1) != HOST_SENDCONTROL_Successful)
+ {
+ puts_P(PSTR("Error Setting Device Configuration.\r\n"));
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+ return;
+ }
+
+ if (HID_Host_SetReportProtocol(&Device_HID_Interface) != 0)
+ {
+ puts_P(PSTR("Error Setting Report Protocol Mode.\r\n"));
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+ USB_Host_SetDeviceConfiguration(0);
+ return;
+ }
+
+ puts_P(PSTR("HID Device Enumerated.\r\n"));
+ LEDs_SetAllLEDs(LEDMASK_USB_READY);
+}
+
+/** Event handler for the USB_HostError event. This indicates that a hardware error occurred while in host mode. */
+void EVENT_USB_Host_HostError(const uint8_t ErrorCode)
+{
+ USB_Disable();
+
+ printf_P(PSTR(ESC_FG_RED "Host Mode Error\r\n"
+ " -- Error Code %d\r\n" ESC_FG_WHITE), ErrorCode);
+
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+ for(;;);
+}
+
+/** Event handler for the USB_DeviceEnumerationFailed event. This indicates that a problem occurred while
+ * enumerating an attached USB device.
+ */
+void EVENT_USB_Host_DeviceEnumerationFailed(const uint8_t ErrorCode,
+ const uint8_t SubErrorCode)
+{
+ printf_P(PSTR(ESC_FG_RED "Dev Enum Error\r\n"
+ " -- Error Code %d\r\n"
+ " -- Sub Error Code %d\r\n"
+ " -- In State %d\r\n" ESC_FG_WHITE), ErrorCode, SubErrorCode, USB_HostState);
+
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);
+}
+
+/** Callback for the HID Report Parser. This function is called each time the HID report parser is about to store
+ * an IN, OUT or FEATURE item into the HIDReportInfo structure. To save on RAM, we are able to filter out items
+ * we aren't interested in (preventing us from being able to extract them later on, but saving on the RAM they would
+ * have occupied).
+ *
+ * \param[in] CurrentItem Pointer to the item the HID report parser is currently working with
+ *
+ * \return Boolean \c true if the item should be stored into the HID report structure, \c false if it should be discarded
+ */
+bool CALLBACK_HIDParser_FilterHIDReportItem(HID_ReportItem_t* const CurrentItem)
+{
+ return true;
+}
+