+++ /dev/null
-/*\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 CDC demo. This file contains the main tasks of the demo and\r
- * is responsible for the initial application hardware configuration.\r
- */\r
-\r
-#include "CDC.h"\r
-\r
-/** Contains the current baud rate and other settings of the virtual serial port. While this demo does not use\r
- * the physical USART and thus does not use these settings, they must still be retained and returned to the host\r
- * upon request or the host will assume the device is non-functional.\r
- *\r
- * These values are set by the host via a class-specific request, however they are not required to be used accurately.\r
- * It is possible to completely ignore these value or use other settings as the host is completely unaware of the physical\r
- * serial link characteristics and instead sends and receives data in endpoint streams.\r
- */\r
-CDC_Line_Coding_t LineEncoding = { .BaudRateBPS = 0,\r
- .CharFormat = OneStopBit,\r
- .ParityType = Parity_None,\r
- .DataBits = 8 };\r
-\r
-\r
-#if 0\r
-/* NOTE: Here you can set up a standard stream using the created virtual serial port, so that the standard stream functions in\r
- * <stdio.h> can be used on the virtual serial port (e.g. fprintf(&USBSerial, "Test"); to print a string).\r
- */\r
- \r
-static int CDC_putchar(char c, FILE *stream)\r
-{ \r
- Endpoint_SelectEndpoint(CDC_TX_EPNUM);\r
-\r
- if (!(LineEncoding.BaudRateBPS))\r
- return -1;\r
- \r
- if (Endpoint_WaitUntilReady())\r
- return -1;\r
-\r
- Endpoint_Write_Byte(c);\r
- Endpoint_ClearIN();\r
- \r
- return 0;\r
-}\r
-\r
-static int CDC_getchar(FILE *stream)\r
-{\r
- int c;\r
-\r
- if (!(LineEncoding.BaudRateBPS))\r
- return -1;\r
-\r
- Endpoint_SelectEndpoint(CDC_RX_EPNUM);\r
- \r
- for (;;)\r
- {\r
- if (Endpoint_WaitUntilReady())\r
- return -1;\r
- \r
- if (!(Endpoint_BytesInEndpoint()))\r
- {\r
- Endpoint_ClearOUT();\r
- }\r
- else\r
- {\r
- c = Endpoint_Read_Byte();\r
- break;\r
- }\r
- }\r
- \r
- return c;\r
-}\r
-\r
-static FILE USBSerial = FDEV_SETUP_STREAM(CDC_putchar, CDC_getchar, _FDEV_SETUP_RW);\r
-#endif\r
-\r
-/** Main program entry point. This routine contains the overall program flow, including initial\r
- * setup of all components and the main program loop.\r
- */\r
-int main(void)\r
-{\r
- SetupHardware();\r
- \r
- LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);\r
-\r
- for (;;)\r
- {\r
- CDC_Task();\r
- USB_USBTask();\r
- }\r
-}\r
-\r
-/** Configures the board hardware and chip peripherals for the demo's functionality. */\r
-void SetupHardware(void)\r
-{\r
- /* Disable watchdog if enabled by bootloader/fuses */\r
- MCUSR &= ~(1 << WDRF);\r
- wdt_disable();\r
-\r
- /* Disable clock division */\r
- clock_prescale_set(clock_div_1);\r
-\r
- /* Hardware Initialization */\r
- Joystick_Init();\r
- LEDs_Init();\r
- USB_Init();\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
-void EVENT_USB_Device_Connect(void)\r
-{\r
- /* Indicate USB enumerating */\r
- LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);\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 and stops the USB management and CDC management tasks.\r
- */\r
-void EVENT_USB_Device_Disconnect(void)\r
-{\r
- /* Indicate USB not ready */\r
- LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);\r
-}\r
-\r
-/** Event handler for the USB_ConfigurationChanged event. This is fired when the host set the current configuration\r
- * of the USB device after enumeration - the device endpoints are configured and the CDC management task started.\r
- */\r
-void EVENT_USB_Device_ConfigurationChanged(void)\r
-{\r
- /* Indicate USB connected and ready */\r
- LEDs_SetAllLEDs(LEDMASK_USB_READY);\r
-\r
- /* Setup CDC Notification, Rx and Tx Endpoints */\r
- if (!(Endpoint_ConfigureEndpoint(CDC_NOTIFICATION_EPNUM, EP_TYPE_INTERRUPT,\r
- ENDPOINT_DIR_IN, CDC_NOTIFICATION_EPSIZE,\r
- ENDPOINT_BANK_SINGLE)))\r
- {\r
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
- }\r
- \r
- if (!(Endpoint_ConfigureEndpoint(CDC_TX_EPNUM, EP_TYPE_BULK,\r
- ENDPOINT_DIR_IN, CDC_TXRX_EPSIZE,\r
- ENDPOINT_BANK_SINGLE)))\r
- {\r
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
- }\r
- \r
- if (!(Endpoint_ConfigureEndpoint(CDC_RX_EPNUM, EP_TYPE_BULK,\r
- ENDPOINT_DIR_OUT, CDC_TXRX_EPSIZE,\r
- ENDPOINT_BANK_SINGLE)))\r
- {\r
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
- }\r
- \r
- /* Reset line encoding baud rate so that the host knows to send new values */\r
- LineEncoding.BaudRateBPS = 0;\r
-}\r
-\r
-/** Event handler for the USB_UnhandledControlRequest event. This is used to catch standard and class specific\r
- * control requests that are not handled internally by the USB library (including the CDC control commands,\r
- * which are all issued via the control endpoint), so that they can be handled appropriately for the application.\r
- */\r
-void EVENT_USB_Device_UnhandledControlRequest(void)\r
-{\r
- /* Process CDC specific control requests */\r
- switch (USB_ControlRequest.bRequest)\r
- {\r
- case REQ_GetLineEncoding:\r
- if (USB_ControlRequest.bmRequestType == (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE))\r
- { \r
- /* Acknowledge the SETUP packet, ready for data transfer */\r
- Endpoint_ClearSETUP();\r
-\r
- /* Write the line coding data to the control endpoint */\r
- Endpoint_Write_Control_Stream_LE(&LineEncoding, sizeof(CDC_Line_Coding_t));\r
- \r
- /* Finalize the stream transfer to send the last packet or clear the host abort */\r
- Endpoint_ClearOUT();\r
- }\r
- \r
- break;\r
- case REQ_SetLineEncoding:\r
- if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))\r
- {\r
- /* Acknowledge the SETUP packet, ready for data transfer */\r
- Endpoint_ClearSETUP();\r
-\r
- /* Read the line coding data in from the host into the global struct */\r
- Endpoint_Read_Control_Stream_LE(&LineEncoding, sizeof(CDC_Line_Coding_t));\r
-\r
- /* Finalize the stream transfer to clear the last packet from the host */\r
- Endpoint_ClearIN();\r
- }\r
- \r
- break;\r
- case REQ_SetControlLineState:\r
- if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_INTERFACE))\r
- {\r
- /* Acknowledge the SETUP packet, ready for data transfer */\r
- Endpoint_ClearSETUP();\r
- \r
- /* NOTE: Here you can read in the line state mask from the host, to get the current state of the output handshake\r
- lines. The mask is read in from the wValue parameter in USB_ControlRequest, and can be masked against the\r
- CONTROL_LINE_OUT_* masks to determine the RTS and DTR line states using the following code:\r
- */\r
- \r
- Endpoint_ClearStatusStage();\r
- }\r
- \r
- break;\r
- }\r
-}\r
-\r
-/** Function to manage CDC data transmission and reception to and from the host. */\r
-void CDC_Task(void)\r
-{\r
- char* ReportString = NULL;\r
- uint8_t JoyStatus_LCL = Joystick_GetStatus();\r
- static bool ActionSent = false;\r
- \r
- /* Device must be connected and configured for the task to run */\r
- if (USB_DeviceState != DEVICE_STATE_Configured)\r
- return;\r
- \r
-#if 0\r
- /* NOTE: Here you can use the notification endpoint to send back line state changes to the host, for the special RS-232\r
- * handshake signal lines (and some error states), via the CONTROL_LINE_IN_* masks and the following code:\r
- */\r
- USB_Notification_Header_t Notification = (USB_Notification_Header_t)\r
- {\r
- .NotificationType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_INTERFACE),\r
- .Notification = NOTIF_SerialState,\r
- .wValue = 0,\r
- .wIndex = 0,\r
- .wLength = sizeof(uint16_t),\r
- };\r
- \r
- uint16_t LineStateMask;\r
- \r
- // Set LineStateMask here to a mask of CONTROL_LINE_IN_* masks to set the input handshake line states to send to the host\r
- \r
- Endpoint_SelectEndpoint(CDC_NOTIFICATION_EPNUM);\r
- Endpoint_Write_Stream_LE(&Notification, sizeof(Notification));\r
- Endpoint_Write_Stream_LE(&LineStateMask, sizeof(LineStateMask));\r
- Endpoint_ClearIN();\r
-#endif\r
-\r
- /* Determine if a joystick action has occurred */\r
- if (JoyStatus_LCL & JOY_UP)\r
- ReportString = "Joystick Up\r\n";\r
- else if (JoyStatus_LCL & JOY_DOWN)\r
- ReportString = "Joystick Down\r\n";\r
- else if (JoyStatus_LCL & JOY_LEFT)\r
- ReportString = "Joystick Left\r\n";\r
- else if (JoyStatus_LCL & JOY_RIGHT)\r
- ReportString = "Joystick Right\r\n";\r
- else if (JoyStatus_LCL & JOY_PRESS)\r
- ReportString = "Joystick Pressed\r\n";\r
- else\r
- ActionSent = false;\r
-\r
- /* Flag management - Only allow one string to be sent per action */\r
- if ((ReportString != NULL) && (ActionSent == false) && LineEncoding.BaudRateBPS)\r
- {\r
- ActionSent = true;\r
-\r
- /* Select the Serial Tx Endpoint */\r
- Endpoint_SelectEndpoint(CDC_TX_EPNUM);\r
-\r
- /* Write the String to the Endpoint */\r
- Endpoint_Write_Stream_LE(ReportString, strlen(ReportString));\r
- \r
- /* Remember if the packet to send completely fills the endpoint */\r
- bool IsFull = (Endpoint_BytesInEndpoint() == CDC_TXRX_EPSIZE);\r
-\r
- /* Finalize the stream transfer to send the last packet */\r
- Endpoint_ClearIN();\r
-\r
- /* If the last packet filled the endpoint, send an empty packet to release the buffer on \r
- * the receiver (otherwise all data will be cached until a non-full packet is received) */\r
- if (IsFull)\r
- {\r
- /* Wait until the endpoint is ready for another packet */\r
- Endpoint_WaitUntilReady();\r
- \r
- /* Send an empty packet to ensure that the host does not buffer data sent to it */\r
- Endpoint_ClearIN();\r
- }\r
- }\r
-\r
- /* Select the Serial Rx Endpoint */\r
- Endpoint_SelectEndpoint(CDC_RX_EPNUM);\r
- \r
- /* Throw away any received data from the host */\r
- if (Endpoint_IsOUTReceived())\r
- Endpoint_ClearOUT();\r
-}\r
projects / pub / lufa.git / blobdiff