+++ /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_Device_t VirtualSerial_CDC_Interface =\r
- {\r
- .Config = \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
-\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
- /* Read bytes from the USB OUT endpoint into the USART transmit buffer */\r
- for (uint8_t DataBytesRem = CDC_Device_BytesReceived(&VirtualSerial_CDC_Interface); DataBytesRem != 0; DataBytesRem--)\r
- {\r
- if (!(BUFF_STATICSIZE - Rx_Buffer.Elements))\r
- break;\r
- \r
- Buffer_StoreElement(&Rx_Buffer, CDC_Device_ReceiveByte(&VirtualSerial_CDC_Interface));\r
- }\r
- \r
- /* Read bytes from the USART receive buffer into the USB IN endpoint */\r
- if (Tx_Buffer.Elements)\r
- CDC_Device_SendByte(&VirtualSerial_CDC_Interface, Buffer_GetElement(&Tx_Buffer));\r
- \r
- /* Load bytes from the USART transmit buffer into the USART */\r
- if (Rx_Buffer.Elements)\r
- Serial_TxByte(Buffer_GetElement(&Rx_Buffer));\r
- \r
- CDC_Device_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
- Serial_Init(9600, false);\r
- LEDs_Init();\r
- USB_Init();\r
-}\r
-\r
-/** Event handler for the library USB Connection event. */\r
-void EVENT_USB_Device_Connect(void)\r
-{\r
- LEDs_SetAllLEDs(LEDMASK_USB_ENUMERATING);\r
-}\r
-\r
-/** Event handler for the library USB Disconnection event. */\r
-void EVENT_USB_Device_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_Device_ConfigurationChanged(void)\r
-{\r
- LEDs_SetAllLEDs(LEDMASK_USB_READY);\r
-\r
- if (!(CDC_Device_ConfigureEndpoints(&VirtualSerial_CDC_Interface)))\r
- LEDs_SetAllLEDs(LEDMASK_USB_ERROR);\r
-}\r
-\r
-/** Event handler for the library USB Unhandled Control Request event. */\r
-void EVENT_USB_Device_UnhandledControlRequest(void)\r
-{\r
- CDC_Device_ProcessControlRequest(&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
- uint8_t ReceivedByte = UDR1;\r
-\r
- if (USB_DeviceState == DEVICE_STATE_Configured)\r
- Buffer_StoreElement(&Tx_Buffer, ReceivedByte);\r
-}\r
-\r
-/** Event handler for the CDC Class driver Line Encoding Changed event.\r
- *\r
- * \param[in] CDCInterfaceInfo Pointer to the CDC class interface configuration structure being referenced\r
- */\r
-void EVENT_CDC_Device_LineEncodingChanged(USB_ClassInfo_CDC_Device_t* const CDCInterfaceInfo)\r
-{\r
- uint8_t ConfigMask = 0;\r
-\r
- switch (CDCInterfaceInfo->State.LineEncoding.ParityType)\r
- {\r
- case CDC_PARITY_Odd:\r
- ConfigMask = ((1 << UPM11) | (1 << UPM10)); \r
- break;\r
- case CDC_PARITY_Even:\r
- ConfigMask = (1 << UPM11); \r
- break;\r
- }\r
-\r
- if (CDCInterfaceInfo->State.LineEncoding.CharFormat == CDC_LINEENCODING_TwoStopBits)\r
- ConfigMask |= (1 << USBS1);\r
-\r
- switch (CDCInterfaceInfo->State.LineEncoding.DataBits)\r
- {\r
- case 6:\r
- ConfigMask |= (1 << UCSZ10);\r
- break;\r
- case 7:\r
- ConfigMask |= (1 << UCSZ11);\r
- break;\r
- case 8:\r
- ConfigMask |= ((1 << UCSZ11) | (1 << UCSZ10));\r
- break;\r
- }\r
- \r
- UCSR1A = (1 << U2X1); \r
- UCSR1B = ((1 << RXCIE1) | (1 << TXEN1) | (1 << RXEN1));\r
- UCSR1C = ConfigMask; \r
- UBRR1 = SERIAL_2X_UBBRVAL((uint16_t)CDCInterfaceInfo->State.LineEncoding.BaudRateBPS);\r
-}\r
projects / pub / lufa.git / blobdiff