From 87b2572ae50d20f04dfa6bfbd9e0b8b20ee650e9 Mon Sep 17 00:00:00 2001 From: Dean Camera Date: Wed, 4 Nov 2009 04:55:10 +0000 Subject: Added new JoystickHostWithParser demos to the library. Add some missing documentation to some of the library demos. --- .../JoystickHostWithParser.c | 305 +++++++++++++++++++++ 1 file changed, 305 insertions(+) create mode 100644 Demos/Host/LowLevel/JoystickHostWithParser/JoystickHostWithParser.c (limited to 'Demos/Host/LowLevel/JoystickHostWithParser/JoystickHostWithParser.c') diff --git a/Demos/Host/LowLevel/JoystickHostWithParser/JoystickHostWithParser.c b/Demos/Host/LowLevel/JoystickHostWithParser/JoystickHostWithParser.c new file mode 100644 index 000000000..eee9343d3 --- /dev/null +++ b/Demos/Host/LowLevel/JoystickHostWithParser/JoystickHostWithParser.c @@ -0,0 +1,305 @@ +/* + LUFA Library + Copyright (C) Dean Camera, 2009. + + dean [at] fourwalledcubicle [dot] com + www.fourwalledcubicle.com +*/ + +/* + Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com) + + Permission to use, copy, modify, and distribute this software + and its documentation for any purpose and without fee is hereby + granted, 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 disclaim 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 JoystickHostWithParser demo. This file contains the main tasks of + * the demo and is responsible for the initial application hardware configuration. + */ + +#include "JoystickHostWithParser.h" + +/** 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 "Joystick HID Parser Host Demo running.\r\n" ESC_FG_WHITE)); + + LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); + + for (;;) + { + Joystick_HID_Task(); + 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 */ + SerialStream_Init(9600, false); + LEDs_Init(); + USB_Init(); +} + +/** 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(ESC_FG_GREEN "Device Attached.\r\n" ESC_FG_WHITE)); + 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(ESC_FG_GREEN "Device Unattached.\r\n" ESC_FG_WHITE)); + 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_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_ShutDown(); + + 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); +} + +/** Task to set the configuration of the attached device after it has been enumerated, and to read and process + * the HID report descriptor and HID reports from the device and display the results onto the board LEDs. + */ +void Joystick_HID_Task(void) +{ + uint8_t ErrorCode; + + /* Switch to determine what user-application handled host state the host state machine is in */ + switch (USB_HostState) + { + case HOST_STATE_Addressed: + puts_P(PSTR("Getting Config Data.\r\n")); + + /* Get and process the configuration descriptor data */ + if ((ErrorCode = ProcessConfigurationDescriptor()) != SuccessfulConfigRead) + { + if (ErrorCode == ControlError) + puts_P(PSTR(ESC_FG_RED "Control Error (Get Configuration).\r\n")); + else + puts_P(PSTR(ESC_FG_RED "Invalid Device.\r\n")); + + printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode); + + /* Indicate error via status LEDs */ + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + + /* Wait until USB device disconnected */ + USB_HostState = HOST_STATE_WaitForDeviceRemoval; + break; + } + + /* Set the device configuration to the first configuration (rarely do devices use multiple configurations) */ + if ((ErrorCode = USB_Host_SetDeviceConfiguration(1)) != HOST_SENDCONTROL_Successful) + { + printf_P(PSTR(ESC_FG_RED "Control Error (Set Configuration).\r\n" + " -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode); + + /* Indicate error via status LEDs */ + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + + /* Wait until USB device disconnected */ + USB_HostState = HOST_STATE_WaitForDeviceRemoval; + break; + } + + printf_P(PSTR("Processing HID Report (Size %d Bytes).\r\n"), HIDReportSize); + + /* Get and process the device's first HID report descriptor */ + if ((ErrorCode = GetHIDReportData()) != ParseSuccessful) + { + puts_P(PSTR(ESC_FG_RED "Report Parse Error.\r\n")); + + if (!(HIDReportInfo.TotalReportItems)) + puts_P(PSTR("Not a valid Joystick." ESC_FG_WHITE)); + else + printf_P(PSTR(" -- Error Code: %d\r\n" ESC_FG_WHITE), ErrorCode); + + /* Indicate error via status LEDs */ + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + + /* Wait until USB device disconnected */ + USB_HostState = HOST_STATE_WaitForDeviceRemoval; + break; + } + + printf("Total Reports: %d\r\n", HIDReportInfo.TotalDeviceReports); + + for (uint8_t i = 0; i < HIDReportInfo.TotalDeviceReports; i++) + { + HID_ReportSizeInfo_t* CurrReportIDInfo = &HIDReportInfo.ReportIDSizes[i]; + + uint8_t ReportSizeInBits = CurrReportIDInfo->ReportSizeBits[REPORT_ITEM_TYPE_In]; + uint8_t ReportSizeOutBits = CurrReportIDInfo->ReportSizeBits[REPORT_ITEM_TYPE_Out]; + uint8_t ReportSizeFeatureBits = CurrReportIDInfo->ReportSizeBits[REPORT_ITEM_TYPE_Feature]; + + /* Print out the byte sizes of each report within the device */ + printf_P(PSTR(" + Report ID %d - In: %d bytes, Out: %d bytes, Feature: %d bytes\r\n"), + CurrReportIDInfo->ReportID, + ((ReportSizeInBits >> 3) + ((ReportSizeInBits & 0x07) != 0)), + ((ReportSizeOutBits >> 3) + ((ReportSizeOutBits & 0x07) != 0)), + ((ReportSizeFeatureBits >> 3) + ((ReportSizeFeatureBits & 0x07) != 0))); + } + + puts_P(PSTR("Joystick Enumerated.\r\n")); + + USB_HostState = HOST_STATE_Configured; + break; + case HOST_STATE_Configured: + /* Select and unfreeze joystick data pipe */ + Pipe_SelectPipe(JOYSTICK_DATAPIPE); + Pipe_Unfreeze(); + + /* Check to see if a packet has been received */ + if (Pipe_IsINReceived()) + { + /* Check if data has been received from the attached joystick */ + if (Pipe_IsReadWriteAllowed()) + { + /* Create buffer big enough for the report */ + uint8_t JoystickReport[Pipe_BytesInPipe()]; + + /* Load in the joystick report */ + Pipe_Read_Stream_LE(JoystickReport, Pipe_BytesInPipe()); + + /* Process the read in joystick report from the device */ + ProcessJoystickReport(JoystickReport); + } + + /* Clear the IN endpoint, ready for next data packet */ + Pipe_ClearIN(); + } + + /* Freeze joystick data pipe */ + Pipe_Freeze(); + break; + } +} + +/** Processes a read HID report from an attached joystick, extracting out elements via the HID parser results + * as required and displays movement and button presses on the board LEDs. + * + * \param[in] JoystickReport Pointer to a HID report from an attached joystick device + */ +void ProcessJoystickReport(uint8_t* JoystickReport) +{ + uint8_t LEDMask = LEDS_NO_LEDS; + + /* Check each HID report item in turn, looking for joystick X/Y/button reports */ + for (uint8_t ReportNumber = 0; ReportNumber < HIDReportInfo.TotalReportItems; ReportNumber++) + { + /* Create a temporary item pointer to the next report item */ + HID_ReportItem_t* ReportItem = &HIDReportInfo.ReportItems[ReportNumber]; + + bool FoundData; + + if ((ReportItem->Attributes.Usage.Page == USAGE_PAGE_BUTTON) && + (ReportItem->ItemType == REPORT_ITEM_TYPE_In)) + { + /* Get the joystick button value */ + FoundData = USB_GetHIDReportItemInfo(JoystickReport, ReportItem); + + /* For multi-report devices - if the requested data was not in the issued report, continue */ + if (!(FoundData)) + continue; + + /* If button is pressed, all LEDs are turned on */ + if (ReportItem->Value) + LEDMask = LEDS_ALL_LEDS; + } + else if ((ReportItem->Attributes.Usage.Page == USAGE_PAGE_GENERIC_DCTRL) && + ((ReportItem->Attributes.Usage.Usage == USAGE_X) || + (ReportItem->Attributes.Usage.Usage == USAGE_Y)) && + (ReportItem->ItemType == REPORT_ITEM_TYPE_In)) + { + /* Get the joystick relative position value */ + FoundData = USB_GetHIDReportItemInfo(JoystickReport, ReportItem); + + /* For multi-report devices - if the requested data was not in the issued report, continue */ + if (!(FoundData)) + continue; + + int16_t DeltaMovement = (int16_t)(ReportItem->Value << (16 - ReportItem->Attributes.BitSize)); + + /* Determine if the report is for the X or Y delta movement */ + if (ReportItem->Attributes.Usage.Usage == USAGE_X) + { + /* Turn on the appropriate LED according to direction if the delta is non-zero */ + if (DeltaMovement) + LEDMask |= ((DeltaMovement > 0) ? LEDS_LED1 : LEDS_LED2); + } + else + { + /* Turn on the appropriate LED according to direction if the delta is non-zero */ + if (DeltaMovement) + LEDMask |= ((DeltaMovement > 0) ? LEDS_LED3 : LEDS_LED4); + } + } + } + + /* Display the button information on the board LEDs */ + LEDs_SetAllLEDs(LEDMask); +} \ No newline at end of file -- cgit v1.2.3