X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/33a018474913701fa9ef8e962acf58accd1184d2..a5abb0eb3f368f0f090ebfd7f9fc22e94466f31e:/Demos/Device/LowLevel/Joystick/Joystick.c diff --git a/Demos/Device/LowLevel/Joystick/Joystick.c b/Demos/Device/LowLevel/Joystick/Joystick.c index 94763b82a..cfdfaae2f 100644 --- a/Demos/Device/LowLevel/Joystick/Joystick.c +++ b/Demos/Device/LowLevel/Joystick/Joystick.c @@ -1,205 +1,205 @@ -/* - 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 Joystick demo. This file contains the main tasks of the demo and - * is responsible for the initial application hardware configuration. - */ - -#include "Joystick.h" - -/** Main program entry point. This routine configures the hardware required by the application, then - * starts the scheduler to run the application tasks. - */ -int main(void) -{ - SetupHardware(); - - LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); - - for (;;) - { - 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 */ - Joystick_Init(); - LEDs_Init(); - Buttons_Init(); - USB_Init(); -} - -/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and - * starts the library USB task to begin the enumeration and USB management process. - */ -void EVENT_USB_Connect(void) -{ - /* Indicate USB enumerating */ - LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING); -} - -/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via - * the status LEDs and stops the USB management and joystick reporting tasks. - */ -void EVENT_USB_Disconnect(void) -{ - /* Indicate USB not ready */ - LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); -} - -/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration - * of the USB device after enumeration - the device endpoints are configured and the joystick reporting task started. - */ -void EVENT_USB_ConfigurationChanged(void) -{ - /* Setup Joystick Report Endpoint */ - Endpoint_ConfigureEndpoint(JOYSTICK_EPNUM, EP_TYPE_INTERRUPT, - ENDPOINT_DIR_IN, JOYSTICK_EPSIZE, - ENDPOINT_BANK_SINGLE); - - /* Indicate USB connected and ready */ - LEDs_SetAllLEDs(LEDMASK_USB_READY); -} - -/** Event handler for the USB_UnhandledControlPacket event. This is used to catch standard and class specific - * control requests that are not handled internally by the USB library (including the HID commands, which are - * all issued via the control endpoint), so that they can be handled appropriately for the application. - */ -void EVENT_USB_UnhandledControlPacket(void) -{ - /* Handle HID Class specific requests */ - switch (USB_ControlRequest.bRequest) - { - case REQ_GetReport: - if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE)) - { - USB_JoystickReport_Data_t JoystickReportData; - - Endpoint_ClearSETUP(); - - /* Create the next HID report to send to the host */ - GetNextReport(&JoystickReportData); - - /* Write the report data to the control endpoint */ - Endpoint_Write_Control_Stream_LE(&JoystickReportData, sizeof(JoystickReportData)); - - /* Finalize the stream transfer to send the last packet or clear the host abort */ - Endpoint_ClearOUT(); - } - - break; - } -} - -/** Fills the given HID report data structure with the next HID report to send to the host. - * - * \param ReportData Pointer to a HID report data structure to be filled - * - * \return Boolean true if the new report differs from the last report, false otherwise - */ -bool GetNextReport(USB_JoystickReport_Data_t* ReportData) -{ - static uint8_t PrevJoyStatus = 0; - static uint8_t PrevButtonStatus = 0; - uint8_t JoyStatus_LCL = Joystick_GetStatus(); - uint8_t ButtonStatus_LCL = Buttons_GetStatus(); - bool InputChanged = false; - - /* Clear the report contents */ - memset(ReportData, 0, sizeof(USB_JoystickReport_Data_t)); - - if (JoyStatus_LCL & JOY_UP) - ReportData->Y = -100; - else if (JoyStatus_LCL & JOY_DOWN) - ReportData->Y = 100; - - if (JoyStatus_LCL & JOY_RIGHT) - ReportData->X = 100; - else if (JoyStatus_LCL & JOY_LEFT) - ReportData->X = -100; - - if (JoyStatus_LCL & JOY_PRESS) - ReportData->Button = (1 << 1); - - if (ButtonStatus_LCL & BUTTONS_BUTTON1) - ReportData->Button |= (1 << 0); - - /* Check if the new report is different to the previous report */ - InputChanged = (uint8_t)(PrevJoyStatus ^ JoyStatus_LCL) | (uint8_t)(PrevButtonStatus ^ ButtonStatus_LCL); - - /* Save the current joystick status for later comparison */ - PrevJoyStatus = JoyStatus_LCL; - PrevButtonStatus = ButtonStatus_LCL; - - /* Return whether the new report is different to the previous report or not */ - return InputChanged; -} - -/** Function to manage HID report generation and transmission to the host. */ -void HID_Task(void) -{ - /* Check if the USB System is connected to a Host */ - if (USB_IsConnected) - { - /* Select the Joystick Report Endpoint */ - Endpoint_SelectEndpoint(JOYSTICK_EPNUM); - - /* Check to see if the host is ready for another packet */ - if (Endpoint_IsINReady()) - { - USB_JoystickReport_Data_t JoystickReportData; - - /* Create the next HID report to send to the host */ - GetNextReport(&JoystickReportData); - - /* Write Joystick Report Data */ - Endpoint_Write_Stream_LE(&JoystickReportData, sizeof(JoystickReportData)); - - /* Finalize the stream transfer to send the last packet */ - Endpoint_ClearIN(); - - /* Clear the report data afterwards */ - memset(&JoystickReportData, 0, sizeof(JoystickReportData)); - } - } -} +/* + LUFA Library + Copyright (C) Dean Camera, 2012. + + dean [at] fourwalledcubicle [dot] com + www.lufa-lib.org +*/ + +/* + Copyright 2012 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 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 Joystick demo. This file contains the main tasks of the demo and + * is responsible for the initial application hardware configuration. + */ + +#include "Joystick.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(); + + LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); + sei(); + + for (;;) + { + 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 */ + Joystick_Init(); + LEDs_Init(); + Buttons_Init(); + USB_Init(); +} + +/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and + * starts the library USB task to begin the enumeration and USB management process. + */ +void EVENT_USB_Device_Connect(void) +{ + /* Indicate USB enumerating */ + LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING); +} + +/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via + * the status LEDs and stops the USB management and joystick reporting tasks. + */ +void EVENT_USB_Device_Disconnect(void) +{ + /* Indicate USB not ready */ + LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY); +} + +/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration + * of the USB device after enumeration - the device endpoints are configured and the joystick reporting task started. + */ +void EVENT_USB_Device_ConfigurationChanged(void) +{ + bool ConfigSuccess = true; + + /* Setup HID Report Endpoint */ + ConfigSuccess &= Endpoint_ConfigureEndpoint(JOYSTICK_EPADDR, EP_TYPE_INTERRUPT, JOYSTICK_EPSIZE, 1); + + /* Indicate endpoint configuration success or failure */ + LEDs_SetAllLEDs(ConfigSuccess ? LEDMASK_USB_READY : LEDMASK_USB_ERROR); +} + +/** Event handler for the USB_ControlRequest event. This is used to catch and process control requests sent to + * the device from the USB host before passing along unhandled control requests to the library for processing + * internally. + */ +void EVENT_USB_Device_ControlRequest(void) +{ + /* Handle HID Class specific requests */ + switch (USB_ControlRequest.bRequest) + { + case HID_REQ_GetReport: + if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE)) + { + USB_JoystickReport_Data_t JoystickReportData; + + /* Create the next HID report to send to the host */ + GetNextReport(&JoystickReportData); + + Endpoint_ClearSETUP(); + + /* Write the report data to the control endpoint */ + Endpoint_Write_Control_Stream_LE(&JoystickReportData, sizeof(JoystickReportData)); + Endpoint_ClearOUT(); + } + + break; + } +} + +/** Fills the given HID report data structure with the next HID report to send to the host. + * + * \param[out] ReportData Pointer to a HID report data structure to be filled + * + * \return Boolean true if the new report differs from the last report, false otherwise + */ +bool GetNextReport(USB_JoystickReport_Data_t* const ReportData) +{ + static uint8_t PrevJoyStatus = 0; + static uint8_t PrevButtonStatus = 0; + uint8_t JoyStatus_LCL = Joystick_GetStatus(); + uint8_t ButtonStatus_LCL = Buttons_GetStatus(); + bool InputChanged = false; + + /* Clear the report contents */ + memset(ReportData, 0, sizeof(USB_JoystickReport_Data_t)); + + if (JoyStatus_LCL & JOY_UP) + ReportData->Y = -100; + else if (JoyStatus_LCL & JOY_DOWN) + ReportData->Y = 100; + + if (JoyStatus_LCL & JOY_LEFT) + ReportData->X = -100; + else if (JoyStatus_LCL & JOY_RIGHT) + ReportData->X = 100; + + if (JoyStatus_LCL & JOY_PRESS) + ReportData->Button |= (1 << 1); + + if (ButtonStatus_LCL & BUTTONS_BUTTON1) + ReportData->Button |= (1 << 0); + + /* Check if the new report is different to the previous report */ + InputChanged = (uint8_t)(PrevJoyStatus ^ JoyStatus_LCL) | (uint8_t)(PrevButtonStatus ^ ButtonStatus_LCL); + + /* Save the current joystick status for later comparison */ + PrevJoyStatus = JoyStatus_LCL; + PrevButtonStatus = ButtonStatus_LCL; + + /* Return whether the new report is different to the previous report or not */ + return InputChanged; +} + +/** Function to manage HID report generation and transmission to the host. */ +void HID_Task(void) +{ + /* Device must be connected and configured for the task to run */ + if (USB_DeviceState != DEVICE_STATE_Configured) + return; + + /* Select the Joystick Report Endpoint */ + Endpoint_SelectEndpoint(JOYSTICK_EPADDR); + + /* Check to see if the host is ready for another packet */ + if (Endpoint_IsINReady()) + { + USB_JoystickReport_Data_t JoystickReportData; + + /* Create the next HID report to send to the host */ + GetNextReport(&JoystickReportData); + + /* Write Joystick Report Data */ + Endpoint_Write_Stream_LE(&JoystickReportData, sizeof(JoystickReportData), NULL); + + /* Finalize the stream transfer to send the last packet */ + Endpoint_ClearIN(); + + /* Clear the report data afterwards */ + memset(&JoystickReportData, 0, sizeof(JoystickReportData)); + } +} +