41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
/*
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* Project name : uart0 : UART - send / receive characters with waiting
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* Author : Avans-TI, JW
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* Revision History : 20110227: - initial release;
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* Description : This program receive a character, and sends it back
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* Test configuration:
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MCU: ATmega128
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Dev.Board: BIGAVR6
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Oscillator: External Clock 08.0000 MHz
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Ext. Modules: -
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SW: AVR-GCC
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* NOTES:
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- Turn ON switch 12, PEO/PE1 tot RX/TX
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*/
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#ifndef _UART
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#define _UART
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#define F_CPU 8000000UL
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#include <avr/io.h>
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#include <util/delay.h>
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#include <avr/interrupt.h>
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#define LF 0x0a // ascii code for Line Feed
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#define CR 0x0d // ascii code for Carriage Return
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#define BIT(x) (1 << (x))
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#define UART0_BAUD 2400 // Baud rate USART0
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#define MYUBRR F_CPU/16/UART0_BAUD - 1 // My USART Baud Rate Register
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void usart0_init( void ) ; // initialize USART0 - receive/transmit
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void usart0_start( void ) ; // UART0 receiver & transmitter enable
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char uart0_receiveChar() ; // UART0: receive ch
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int uart0_sendChar( char ch ) ; // UART0: send ch
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int uart0_receiveString( char* string); // UART0: receive string until LF
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#endif |