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Diffstat (limited to 'Projects/HIDReportViewer/HIDReportViewer.c')
| -rw-r--r-- | Projects/HIDReportViewer/HIDReportViewer.c | 325 |
1 files changed, 325 insertions, 0 deletions
diff --git a/Projects/HIDReportViewer/HIDReportViewer.c b/Projects/HIDReportViewer/HIDReportViewer.c new file mode 100644 index 0000000000..e580caa478 --- /dev/null +++ b/Projects/HIDReportViewer/HIDReportViewer.c @@ -0,0 +1,325 @@ +/* + 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; +} + |