+/*\r
+ LUFA Library\r
+ Copyright (C) Dean Camera, 2009.\r
+ \r
+ dean [at] fourwalledcubicle [dot] com\r
+ www.fourwalledcubicle.com\r
+*/\r
+\r
+/*\r
+ Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)\r
+\r
+ Permission to use, copy, modify, and distribute this software\r
+ and its documentation for any purpose and without fee is hereby\r
+ granted, provided that the above copyright notice appear in all\r
+ copies and that both that the copyright notice and this\r
+ permission notice and warranty disclaimer appear in supporting\r
+ documentation, and that the name of the author not be used in\r
+ advertising or publicity pertaining to distribution of the\r
+ software without specific, written prior permission.\r
+\r
+ The author disclaim all warranties with regard to this\r
+ software, including all implied warranties of merchantability\r
+ and fitness. In no event shall the author be liable for any\r
+ special, indirect or consequential damages or any damages\r
+ whatsoever resulting from loss of use, data or profits, whether\r
+ in an action of contract, negligence or other tortious action,\r
+ arising out of or in connection with the use or performance of\r
+ this software.\r
+*/\r
+\r
+/** \file\r
+ *\r
+ * Main source file for the MouseFullInt demo. This file contains the main tasks of the demo and\r
+ * is responsible for the initial application hardware configuration.\r
+ */\r
+\r
+#include "MouseFullInt.h"\r
+\r
+/* Project Tags, for reading out using the ButtLoad project */\r
+BUTTLOADTAG(ProjName, "LUFA MouseFI App");\r
+BUTTLOADTAG(BuildTime, __TIME__);\r
+BUTTLOADTAG(BuildDate, __DATE__);\r
+BUTTLOADTAG(LUFAVersion, "LUFA V" LUFA_VERSION_STRING);\r
+\r
+/* Global Variables */\r
+/** Indicates what report mode the host has requested, true for normal HID reporting mode, false for special boot\r
+ * protocol reporting mode.\r
+ */\r
+bool UsingReportProtocol = true;\r
+\r
+/** Current Idle period. This is set by the host via a Set Idle HID class request to silence the device's reports\r
+ * for either the entire idle duration, or until the report status changes (e.g. the user moves the mouse).\r
+ */\r
+uint8_t IdleCount = 0;\r
+\r
+/** Current Idle period remaining. When the IdleCount value is set, this tracks the remaining number of idle\r
+ * milliseconds. This is seperate to the IdleCount timer and is incremented and compared as the host may request \r
+ * the current idle period via a Get Idle HID class request, thus its value must be preserved.\r
+ */\r
+uint16_t IdleMSRemaining = 0;\r
+\r
+\r
+/** Main program entry point. This routine configures the hardware required by the application, then\r
+ * starts the scheduler to run the USB management task.\r
+ */\r
+int main(void)\r
+{\r
+ /* Disable watchdog if enabled by bootloader/fuses */\r
+ MCUSR &= ~(1 << WDRF);\r
+ wdt_disable();\r
+\r
+ /* Disable Clock Division */\r
+ SetSystemClockPrescaler(0);\r
+\r
+ /* Hardware Initialization */\r
+ Joystick_Init();\r
+ LEDs_Init();\r
+ HWB_Init();\r
+ \r
+ /* Millisecond timer initialization, with output compare interrupt enabled for the idle timing */\r
+ OCR0A = 0x7D;\r
+ TCCR0A = (1 << WGM01);\r
+ TCCR0B = ((1 << CS01) | (1 << CS00));\r
+ TIMSK0 = (1 << OCIE0A);\r
+\r
+ /* Indicate USB not ready */\r
+ UpdateStatus(Status_USBNotReady);\r
+ \r
+ /* Initialize USB Subsystem */\r
+ USB_Init();\r
+\r
+ /* Main program code loop */\r
+ for (;;)\r
+ {\r
+ /* No main code -- all USB code is interrupt driven */\r
+ }\r
+}\r
+\r
+/** Event handler for the USB_Connect event. This indicates that the device is enumerating via the status LEDs and\r
+ * starts the library USB task to begin the enumeration and USB management process.\r
+ */\r
+EVENT_HANDLER(USB_Connect)\r
+{\r
+ /* Indicate USB enumerating */\r
+ UpdateStatus(Status_USBEnumerating);\r
+\r
+ /* Default to report protocol on connect */\r
+ UsingReportProtocol = true;\r
+}\r
+\r
+/** Event handler for the USB_Reset event. This fires when the USB interface is reset by the USB host, before the\r
+ * enumeration process begins, and enables the control endpoint interrupt so that control requests can be handled\r
+ * asynchronously when they arrive rather than when the control endpoint is polled manually.\r
+ */\r
+EVENT_HANDLER(USB_Reset)\r
+{\r
+ /* Select the control endpoint */\r
+ Endpoint_SelectEndpoint(ENDPOINT_CONTROLEP);\r
+\r
+ /* Enable the endpoint SETUP interrupt ISR for the control endpoint */\r
+ USB_INT_Enable(ENDPOINT_INT_SETUP);\r
+}\r
+\r
+/** Event handler for the USB_Disconnect event. This indicates that the device is no longer connected to a host via\r
+ * the status LEDs.\r
+ */\r
+EVENT_HANDLER(USB_Disconnect)\r
+{\r
+ /* Indicate USB not ready */\r
+ UpdateStatus(Status_USBNotReady);\r
+}\r
+\r
+/** Event handler for the USB_ConfigurationChanged event. This is fired when the host sets the current configuration\r
+ * of the USB device after enumeration, and configures the mouse device endpoints.\r
+ */\r
+EVENT_HANDLER(USB_ConfigurationChanged)\r
+{\r
+ /* Setup Mouse Report Endpoint */\r
+ Endpoint_ConfigureEndpoint(MOUSE_EPNUM, EP_TYPE_INTERRUPT,\r
+ ENDPOINT_DIR_IN, MOUSE_EPSIZE,\r
+ ENDPOINT_BANK_SINGLE);\r
+\r
+ /* Enable the endpoint IN interrupt ISR for the report endpoint */\r
+ USB_INT_Enable(ENDPOINT_INT_IN);\r
+\r
+ /* Indicate USB connected and ready */\r
+ UpdateStatus(Status_USBReady);\r
+}\r
+\r
+/** Event handler for the USB_UnhandledControlPacket event. This is used to catch standard and class specific\r
+ * control requests that are not handled internally by the USB library (including the HID commands, which are\r
+ * all issued via the control endpoint), so that they can be handled appropriately for the application.\r
+ */\r
+EVENT_HANDLER(USB_UnhandledControlPacket)\r
+{\r
+ /* Handle HID Class specific requests */\r
+ switch (bRequest)\r
+ {\r
+ case REQ_GetReport:\r
+ if (bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))\r
+ {\r
+ USB_MouseReport_Data_t MouseReportData;\r
+\r
+ /* Create the next mouse report for transmission to the host */\r
+ GetNextReport(&MouseReportData);\r
+\r
+ /* Ignore report type and ID number value */\r
+ Endpoint_Discard_Word();\r
+ \r
+ /* Ignore unused Interface number value */\r
+ Endpoint_Discard_Word();\r
+\r
+ /* Read in the number of bytes in the report to send to the host */\r
+ uint16_t wLength = Endpoint_Read_Word_LE();\r
+ \r
+ /* If trying to send more bytes than exist to the host, clamp the value at the report size */\r
+ if (wLength > sizeof(MouseReportData))\r
+ wLength = sizeof(MouseReportData);\r
+\r
+ Endpoint_ClearSetupReceived();\r
+ \r
+ /* Write the report data to the control endpoint */\r
+ Endpoint_Write_Control_Stream_LE(&MouseReportData, wLength);\r
+ \r
+ /* Clear the report data afterwards */\r
+ memset(&MouseReportData, 0, sizeof(MouseReportData));\r
+\r
+ /* Finalize the stream transfer to send the last packet or clear the host abort */\r
+ Endpoint_ClearSetupOUT();\r
+ }\r
+ \r
+ break;\r
+ case REQ_GetProtocol:\r
+ if (bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))\r
+ {\r
+ Endpoint_ClearSetupReceived();\r
+ \r
+ /* Write the current protocol flag to the host */\r
+ Endpoint_Write_Byte(UsingReportProtocol);\r
+ \r
+ /* Send the flag to the host */\r
+ Endpoint_ClearSetupIN();\r
+ }\r
+ \r
+ break;\r
+ case REQ_SetProtocol:\r
+ if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))\r
+ {\r
+ /* Read in the wValue parameter containing the new protocol mode */\r
+ uint16_t wValue = Endpoint_Read_Word_LE();\r
+ \r
+ Endpoint_ClearSetupReceived();\r
+ \r
+ /* Set or clear the flag depending on what the host indicates that the current Protocol should be */\r
+ UsingReportProtocol = (wValue != 0x0000);\r
+ \r
+ /* Send an empty packet to acknowedge the command */\r
+ Endpoint_ClearSetupIN();\r
+ }\r
+ \r
+ break;\r
+ case REQ_SetIdle:\r
+ if (bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))\r
+ {\r
+ /* Read in the wValue parameter containing the idle period */\r
+ uint16_t wValue = Endpoint_Read_Word_LE();\r
+ \r
+ Endpoint_ClearSetupReceived();\r
+ \r
+ /* Get idle period in MSB */\r
+ IdleCount = (wValue >> 8);\r
+ \r
+ /* Send an empty packet to acknowedge the command */\r
+ Endpoint_ClearSetupIN();\r
+ }\r
+ \r
+ break;\r
+ case REQ_GetIdle:\r
+ if (bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))\r
+ { \r
+ Endpoint_ClearSetupReceived();\r
+ \r
+ /* Write the current idle duration to the host */\r
+ Endpoint_Write_Byte(IdleCount);\r
+ \r
+ /* Send the flag to the host */\r
+ Endpoint_ClearSetupIN();\r
+ }\r
+\r
+ break;\r
+ }\r
+}\r
+\r
+/** ISR for the timer 0 compare vector. This ISR fires once each millisecond, and increments the\r
+ * scheduler elapsed idle period counter when the host has set an idle period.\r
+ */\r
+ISR(TIMER0_COMPA_vect, ISR_BLOCK)\r
+{\r
+ /* One millisecond has elapsed, decrement the idle time remaining counter if it has not already elapsed */\r
+ if (IdleMSRemaining)\r
+ IdleMSRemaining--;\r
+}\r
+\r
+/** Fills the given HID report data structure with the next HID report to send to the host.\r
+ *\r
+ * \param ReportData Pointer to a HID report data structure to be filled\r
+ *\r
+ * \return Boolean true if the new report differs from the last report, false otherwise\r
+ */\r
+bool GetNextReport(USB_MouseReport_Data_t* ReportData)\r
+{\r
+ static uint8_t PrevJoyStatus = 0;\r
+ static bool PrevHWBStatus = false;\r
+ uint8_t JoyStatus_LCL = Joystick_GetStatus();\r
+ bool InputChanged = false;\r
+ \r
+ /* Clear the report contents */\r
+ memset(ReportData, 0, sizeof(USB_MouseReport_Data_t));\r
+\r
+ if (JoyStatus_LCL & JOY_UP)\r
+ ReportData->Y = -1;\r
+ else if (JoyStatus_LCL & JOY_DOWN)\r
+ ReportData->Y = 1;\r
+\r
+ if (JoyStatus_LCL & JOY_RIGHT)\r
+ ReportData->X = 1;\r
+ else if (JoyStatus_LCL & JOY_LEFT)\r
+ ReportData->X = -1;\r
+\r
+ if (JoyStatus_LCL & JOY_PRESS)\r
+ ReportData->Button = (1 << 0);\r
+ \r
+ if (HWB_GetStatus())\r
+ ReportData->Button |= (1 << 1);\r
+\r
+ /* Check if the new report is different to the previous report */\r
+ InputChanged = ((uint8_t)(PrevJoyStatus ^ JoyStatus_LCL) | (uint8_t)(HWB_GetStatus() ^ PrevHWBStatus));\r
+\r
+ /* Save the current joystick and HWB status for later comparison */\r
+ PrevJoyStatus = JoyStatus_LCL;\r
+ PrevHWBStatus = HWB_GetStatus();\r
+\r
+ /* Return whether the new report is different to the previous report or not */\r
+ return InputChanged;\r
+}\r
+\r
+/** Function to manage status updates to the user. This is done via LEDs on the given board, if available, but may be changed to\r
+ * log to a serial port, or anything else that is suitable for status updates.\r
+ *\r
+ * \param CurrentStatus Current status of the system, from the MouseFullInt_StatusCodes_t enum\r
+ */\r
+void UpdateStatus(uint8_t CurrentStatus)\r
+{\r
+ uint8_t LEDMask = LEDS_NO_LEDS;\r
+ \r
+ /* Set the LED mask to the appropriate LED mask based on the given status code */\r
+ switch (CurrentStatus)\r
+ {\r
+ case Status_USBNotReady:\r
+ LEDMask = (LEDS_LED1);\r
+ break;\r
+ case Status_USBEnumerating:\r
+ LEDMask = (LEDS_LED1 | LEDS_LED2);\r
+ break;\r
+ case Status_USBReady:\r
+ LEDMask = (LEDS_LED2 | LEDS_LED4);\r
+ break;\r
+ }\r
+ \r
+ /* Set the board LEDs to the new LED mask */\r
+ LEDs_SetAllLEDs(LEDMask);\r
+}\r
+\r
+/** ISR for the general Pipe/Endpoint interrupt vector. This ISR fires when an endpoint's status changes (such as\r
+ * a packet has been received) on an endpoint with its corresponding ISR enabling bits set. This is used to send\r
+ * HID packets to the host each time the HID interrupt endpoints polling period elapses, as managed by the USB\r
+ * controller. It is also used to respond to standard and class specific requests send to the device on the control\r
+ * endpoint, by handing them off to the LUFA library when they are received.\r
+ */\r
+ISR(ENDPOINT_PIPE_vect, ISR_BLOCK)\r
+{\r
+ /* Check if the control endpoint has received a request */\r
+ if (Endpoint_HasEndpointInterrupted(ENDPOINT_CONTROLEP))\r
+ {\r
+ /* Clear the endpoint interrupt */\r
+ Endpoint_ClearEndpointInterrupt(ENDPOINT_CONTROLEP);\r
+\r
+ /* Process the control request */\r
+ USB_USBTask();\r
+\r
+ /* Handshake the endpoint setup interrupt - must be after the call to USB_USBTask() */\r
+ USB_INT_Clear(ENDPOINT_INT_SETUP);\r
+ }\r
+\r
+ /* Check if mouse endpoint has interrupted */\r
+ if (Endpoint_HasEndpointInterrupted(MOUSE_EPNUM))\r
+ {\r
+ USB_MouseReport_Data_t MouseReportData;\r
+ bool SendReport = true;\r
+ \r
+ /* Create the next mouse report for transmission to the host */\r
+ GetNextReport(&MouseReportData);\r
+ \r
+ /* Check if the idle period is set*/\r
+ if (IdleCount)\r
+ {\r
+ /* Determine if the idle period has elapsed */\r
+ if (!(IdleMSRemaining))\r
+ {\r
+ /* Reset the idle time remaining counter, must multiply by 4 to get the duration in milliseconds */\r
+ IdleMSRemaining = (IdleCount << 2); \r
+ }\r
+ else\r
+ {\r
+ /* Idle period not elapsed, indicate that a report must not be sent */\r
+ SendReport = false;\r
+ }\r
+ }\r
+ \r
+ /* Check to see if a report should be issued */\r
+ if (SendReport)\r
+ {\r
+ /* Select the Mouse Report Endpoint */\r
+ Endpoint_SelectEndpoint(MOUSE_EPNUM);\r
+\r
+ /* Clear the endpoint IN interrupt flag */\r
+ USB_INT_Clear(ENDPOINT_INT_IN);\r
+\r
+ /* Clear the Mouse Report endpoint interrupt and select the endpoint */\r
+ Endpoint_ClearEndpointInterrupt(MOUSE_EPNUM);\r
+\r
+ /* Write Mouse Report Data */\r
+ Endpoint_Write_Stream_LE(&MouseReportData, sizeof(MouseReportData));\r
+\r
+ /* Finalize the stream transfer to send the last packet */\r
+ Endpoint_ClearCurrentBank();\r
+ }\r
+ }\r
+}\r
projects / pub / lufa.git / blobdiff