Initial Arduino IDE based on Processing.

build/shared/lib/avrlib/uartsw.h

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+/*! \file uartsw.h \brief Interrupt-driven Software UART Driver. */
+//*****************************************************************************
+//
+// File Name	: 'uartsw.h'
+// Title		: Interrupt-driven Software UART Driver
+// Author		: Pascal Stang - Copyright (C) 2002-2004
+// Created		: 7/20/2002
+// Revised		: 4/27/2004
+// Version		: 0.1
+// Target MCU	: Atmel AVR Series (intended for the ATmega16 and ATmega32)
+// Editor Tabs	: 4
+//
+// Description	:
+//		This uart library emulates the operation of a UART (serial port) using
+//	the AVR's hardware timers, I/O pins, and some software.
+//
+//	Specifically, this code uses:
+//		-Timer 1 Output Compare A for transmit timing
+//		-Timer 1 Output Compare B for receive timing
+//		-Timer 1 Input Capture for receive triggering
+//
+//	The above resources cannot be used for other purposes while this software
+//	UART is enabled.  The overflow interrupt from Timer1 can still be used for
+//	other timing, but the prescaler for Timer1 must not be changed.
+//
+//	Serial output from this UART can be routed to any I/O pin.  Serial input
+//	for this UART must come from the Timer1 Input Capture (IC1) I/O pin.
+//	These options should be configured by editing your local copy of
+//	"uartswconf.h".
+//
+// This code is distributed under the GNU Public License
+//		which can be found at http://www.gnu.org/licenses/gpl.txt
+//
+//*****************************************************************************
+
+#ifndef UARTSW_H
+#define UARTSW_H
+
+#include "global.h"
+#include "buffer.h"
+
+// include configuration
+#include "uartswconf.h"
+
+// constants/macros/typdefs
+
+// functions
+
+//! enable and initialize the software uart
+void uartswInit(void);
+//! create and initialize the uart buffers
+void uartswInitBuffers(void);
+//! turns off software UART
+void uartswOff(void);
+//! returns the receive buffer structure 
+cBuffer* uartswGetRxBuffer(void);
+//! sets the uart baud rate
+void uartswSetBaudRate(u32 baudrate);
+//! sends a single byte over the uart
+void uartswSendByte(u08 data);
+
+//! gets a single byte from the uart receive buffer
+// Function returns TRUE if data was available, FALSE if not.
+// Actual data is returned in variable pointed to by "data".
+// example usage:
+// char myReceivedByte;
+// uartswReceiveByte( &myReceivedByte );
+u08 uartswReceiveByte(u08* rxData);
+
+//! internal transmit bit handler
+void uartswTxBitService(void);
+//! internal receive bit handler
+void uartswRxBitService(void);
+
+#endif