Initial Arduino IDE based on Processing.

build/shared/lib/avrlib/uart.h

@@ -0,0 +1,134 @@
+/*! \file uart.h \brief UART driver with buffer support. */
+//*****************************************************************************
+//
+// File Name	: 'uart.h'
+// Title		: UART driver with buffer support
+// Author		: Pascal Stang - Copyright (C) 2000-2002
+// Created		: 11/22/2000
+// Revised		: 02/01/2004
+// Version		: 1.3
+// Target MCU	: ATMEL AVR Series
+// Editor Tabs	: 4
+//
+// This code is distributed under the GNU Public License
+//		which can be found at http://www.gnu.org/licenses/gpl.txt
+//
+//*****************************************************************************
+
+#ifndef UART_H
+#define UART_H
+
+#include "global.h"
+#include "buffer.h"
+
+//! default baud rate
+//! can be changed by using uartSetBaudRate()
+#define UART_DEFAULT_BAUD_RATE	9600
+
+// buffer memory allocation defines
+// buffer sizes
+#ifndef UART_TX_BUFFER_SIZE
+#define UART_TX_BUFFER_SIZE		0x0040	///< number of bytes for uart transmit buffer
+#endif
+#ifndef UART_RX_BUFFER_SIZE
+#define UART_RX_BUFFER_SIZE		0x0040	///< number of bytes for uart receive buffer
+#endif
+
+// define this key if you wish to use
+// external RAM for the	UART buffers
+//#define UART_BUFFER_EXTERNAL_RAM
+#ifdef UART_BUFFER_EXTERNAL_RAM
+	// absolute address of uart buffers
+	#define UART_TX_BUFFER_ADDR	0x1000
+	#define UART_RX_BUFFER_ADDR	0x1100
+#endif
+
+// type of interrupt handler to use
+// *do not change unless you know what you're doing
+// Value may be SIGNAL or INTERRUPT
+#ifndef UART_INTERRUPT_HANDLER
+#define UART_INTERRUPT_HANDLER	SIGNAL
+#endif
+
+// compatibility with most newer processors
+#ifdef UCSRB
+	#define UCR					UCSRB
+#endif
+// compatibility with old Mega processors
+#if defined(UBRR) && !defined(UBRRL)
+	#define	UBRRL				UBRR
+#endif
+// compatibility with dual-uart processors
+// (if you need to use both uarts, please use the uart2 library)
+#if defined(__AVR_ATmega128__)
+	#define UDR					UDR0
+	#define UCR					UCSR0B
+	#define UBRRL				UBRR0L
+	#define UBRRH				UBRR0H
+	#define SIG_UART_TRANS		SIG_UART0_TRANS
+	#define SIG_UART_RECV		SIG_UART0_RECV
+	#define SIG_UART_DATA		SIG_UART0_DATA
+#endif
+#if defined(__AVR_ATmega161__)
+	#define UDR					UDR0
+	#define UCR					UCSR0B
+	#define UBRRL				UBRR0
+	#define SIG_UART_TRANS		SIG_UART0_TRANS
+	#define SIG_UART_RECV		SIG_UART0_RECV
+	#define SIG_UART_DATA		SIG_UART0_DATA
+#endif
+
+// functions
+
+//! initializes transmit and receive buffers
+// called from uartInit()
+void uartInitBuffers(void);
+
+//! initializes uart
+void uartInit(void);
+
+//! redirects received data to a user function
+void uartSetRxHandler(void (*rx_func)(unsigned char c));
+
+//! sets the uart baud rate
+void uartSetBaudRate(u32 baudrate);
+
+//! returns pointer to the receive buffer structure
+cBuffer* uartGetRxBuffer(void);
+
+//! returns pointer to the transmit buffer structure
+cBuffer* uartGetTxBuffer(void);
+
+//! sends a single byte over the uart
+void uartSendByte(u08 data);
+
+//! gets a single byte from the uart receive buffer (getchar-style)
+// returns the byte, or -1 if no byte is available
+int uartGetByte(void);
+
+//! 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;
+// uartReceiveByte( &myReceivedByte );
+u08 uartReceiveByte(u08* data);
+
+//! returns TRUE/FALSE if receive buffer is empty/not-empty
+u08 uartReceiveBufferIsEmpty(void);
+
+//! flushes (deletes) all data from receive buffer
+void uartFlushReceiveBuffer(void);
+
+//! add byte to end of uart Tx buffer
+void uartAddToTxBuffer(u08 data);
+
+//! begins transmission of the transmit buffer under interrupt control
+void uartSendTxBuffer(void);
+
+//! sends a buffer of length nBytes via the uart using interrupt control
+u08  uartSendBuffer(char *buffer, u16 nBytes);
+
+#endif
+
+