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Diffstat (limited to 'lib/lufa/Demos/Host/LowLevel/JoystickHostWithParser/JoystickHostWithParser.c')
| -rw-r--r-- | lib/lufa/Demos/Host/LowLevel/JoystickHostWithParser/JoystickHostWithParser.c | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/lib/lufa/Demos/Host/LowLevel/JoystickHostWithParser/JoystickHostWithParser.c b/lib/lufa/Demos/Host/LowLevel/JoystickHostWithParser/JoystickHostWithParser.c new file mode 100644 index 0000000000..a903c5767e --- /dev/null +++ b/lib/lufa/Demos/Host/LowLevel/JoystickHostWithParser/JoystickHostWithParser.c @@ -0,0 +1,273 @@ +/* + 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 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); + GlobalInterruptEnable(); + + for (;;) + { + JoystickHost_Task(); + + USB_USBTask(); + } +} + +/** 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(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) +{ + puts_P(PSTR("Getting Config Data.\r\n")); + + uint8_t ErrorCode; + + /* 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); + + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + return; + } + + /* 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); + + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + return; + } + + 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); + + LEDs_SetAllLEDs(LEDMASK_USB_ERROR); + USB_Host_SetDeviceConfiguration(0); + return; + } + + puts_P(PSTR("Joystick 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); +} + +/** Task to read and process the HID report descriptor and HID reports from the device + * and display the results onto the board LEDs. + */ +void JoystickHost_Task(void) +{ + if (USB_HostState != HOST_STATE_Configured) + return; + + /* Select and unfreeze joystick data pipe */ + Pipe_SelectPipe(JOYSTICK_DATA_IN_PIPE); + 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(), NULL); + + /* 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(); +} + +/** 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 == HID_REPORT_ITEM_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 == HID_REPORT_ITEM_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 = HID_ALIGN_DATA(ReportItem, int16_t); + + /* Check to see if a (non-zero) delta movement has been indicated */ + if (DeltaMovement) + { + /* Determine if the report is for the X or Y delta movement, light LEDs as appropriate */ + if (ReportItem->Attributes.Usage.Usage == USAGE_X) + LEDMask |= ((DeltaMovement > 0) ? LEDS_LED1 : LEDS_LED2); + else + LEDMask |= ((DeltaMovement > 0) ? LEDS_LED3 : LEDS_LED4); + } + } + } + + /* Display the button information on the board LEDs */ + LEDs_SetAllLEDs(LEDMask); +} + |