--- /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 USBtoSerial demo. This file contains the main tasks of\r
+ * the demo and is responsible for the initial application hardware configuration.\r
+ */\r
+\r
+#include "USBtoSerial.h"\r
+\r
+/** Circular buffer to hold data from the host before it is sent to the device via the serial port. */\r
+RingBuff_t Rx_Buffer;\r
+\r
+/** Circular buffer to hold data from the serial port before it is sent to the host. */\r
+RingBuff_t Tx_Buffer;\r
+\r
+/** LUFA CDC Class driver interface configuration and state information. This structure is\r
+ * passed to all CDC Class driver functions, so that multiple instances of the same class\r
+ * within a device can be differentiated from one another.\r
+ */\r
+USB_ClassInfo_CDC_t VirtualSerial_CDC_Interface =\r
+ {\r
+ .ControlInterfaceNumber = 0,\r
+\r
+ .DataINEndpointNumber = CDC_TX_EPNUM,\r
+ .DataINEndpointSize = CDC_TXRX_EPSIZE,\r
+\r
+ .DataOUTEndpointNumber = CDC_RX_EPNUM,\r
+ .DataOUTEndpointSize = CDC_TXRX_EPSIZE,\r
+\r
+ .NotificationEndpointNumber = CDC_NOTIFICATION_EPNUM,\r
+ .NotificationEndpointSize = CDC_NOTIFICATION_EPSIZE,\r
+ };\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
+ Buffer_Initialize(&Rx_Buffer);\r
+ Buffer_Initialize(&Tx_Buffer);\r
+\r
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);\r
+\r
+ for (;;)\r
+ {\r
+ for (uint8_t DataBytesRem = USB_CDC_BytesReceived(&VirtualSerial_CDC_Interface); DataBytesRem != 0; DataBytesRem--)\r
+ {\r
+ if (!(BUFF_STATICSIZE - Rx_Buffer.Elements))\r
+ break;\r
+ \r
+ Buffer_StoreElement(&Rx_Buffer, USB_CDC_ReceiveByte(&VirtualSerial_CDC_Interface));\r
+ }\r
+ \r
+ if (Tx_Buffer.Elements)\r
+ USB_CDC_SendByte(&VirtualSerial_CDC_Interface, Buffer_GetElement(&Rx_Buffer));\r
+ \r
+ if (Rx_Buffer.Elements)\r
+ Serial_TxByte(Buffer_GetElement(&Rx_Buffer));\r
+ \r
+ USB_CDC_USBTask(&VirtualSerial_CDC_Interface);\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 library USB Connection event. */\r
+void EVENT_USB_Connect(void)\r
+{\r
+ LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);\r
+}\r
+\r
+/** Event handler for the library USB Disconnection event. */\r
+void EVENT_USB_Disconnect(void)\r
+{\r
+ LEDs_SetAllLEDs(LEDMASK_USB_NOTREADY);\r
+}\r
+\r
+/** Event handler for the library USB Configuration Changed event. */\r
+void EVENT_USB_ConfigurationChanged(void)\r
+{\r
+ LEDs_SetAllLEDs(LEDMASK_USB_READY);\r
+\r
+ if (!(USB_CDC_ConfigureEndpoints(&VirtualSerial_CDC_Interface)))\r
+ LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
+}\r
+\r
+/** Event handler for the library USB Unhandled Control Packet event. */\r
+void EVENT_USB_UnhandledControlPacket(void)\r
+{\r
+ USB_CDC_ProcessControlPacket(&VirtualSerial_CDC_Interface);\r
+}\r
+\r
+/** ISR to manage the reception of data from the serial port, placing received bytes into a circular buffer\r
+ * for later transmission to the host.\r
+ */\r
+ISR(USART1_RX_vect, ISR_BLOCK)\r
+{\r
+ if (USB_IsConnected)\r
+ Buffer_StoreElement(&Tx_Buffer, UDR1);\r
+}\r
+\r
+/** Event handler for the CDC Class driver Line Encoding Changed event.\r
+ *\r
+ * \param CDCInterfaceInfo Pointer to the CDC class interface configuration structure being referenced\r
+ */\r
+void EVENT_USB_CDC_LineEncodingChanged(USB_ClassInfo_CDC_t* CDCInterfaceInfo)\r
+{\r
+ uint8_t ConfigMask = 0;\r
+\r
+ if (CDCInterfaceInfo->LineEncoding.ParityType == CDC_PARITY_Odd)\r
+ ConfigMask = ((1 << UPM11) | (1 << UPM10));\r
+ else if (CDCInterfaceInfo->LineEncoding.ParityType == CDC_PARITY_Even)\r
+ ConfigMask = (1 << UPM11);\r
+\r
+ if (CDCInterfaceInfo->LineEncoding.CharFormat == CDC_LINEENCODING_TwoStopBits)\r
+ ConfigMask |= (1 << USBS1);\r
+\r
+ if (CDCInterfaceInfo->LineEncoding.DataBits == 6)\r
+ ConfigMask |= (1 << UCSZ10);\r
+ else if (CDCInterfaceInfo->LineEncoding.DataBits == 7)\r
+ ConfigMask |= (1 << UCSZ11);\r
+ else if (CDCInterfaceInfo->LineEncoding.DataBits == 8)\r
+ ConfigMask |= ((1 << UCSZ11) | (1 << UCSZ10));\r
+ \r
+ UCSR1A = (1 << U2X1); \r
+ UCSR1B = ((1 << RXCIE1) | (1 << TXEN1) | (1 << RXEN1));\r
+ UCSR1C = ConfigMask; \r
+ UBRR1 = SERIAL_2X_UBBRVAL((uint16_t)CDCInterfaceInfo->LineEncoding.BaudRateBPS);\r
+}\r
projects / pub / lufa.git / blobdiff