UART.rar_ATMEGA64 USART1_ATmega64 USART_USART_atmega64_atmega64

/*****************************************************/ /* File name : UART.c */ /* Description : code for UART0 of m64/128 */ /* Platform : AVRStudio4.13 + WinAVR20070525 for AVR */ /* Author : Michael Zhang - 章其波 */ /* Email : sudazqb@163.com */ /* MSN : zhangqibo_1985@hotmail.com */ /* Date : 2006-12-26 */ /* NOT FOR COMMERCIAL USE, ALL RIGHT RESERVED! */ /*****************************************************/ /* Change Log: */ /* 20061226: modify for AVRGCC, fdevopen(); */ /* 20061226: original version from ATmel's datasheet*/ /*****************************************************/ #include"UART.h" int USART_putchar(char CH) { /* Wait for empty transmit buffer */ while ( !( UCSR0A & (1<<UDRE0)) ); /* Put data into buffer, sends the data */ UDR0=CH; return 0; } int USART_getchar(void) { /* Wait for data to be received */ while ( !(UCSR0A & (1<<RXC0)) ); /* Get and return received data from buffer */ return UDR0; } void COM_Initial(unsigned int UBRR_val) { /* Set baud rate */ UBRR0H = (unsigned char)(UBRR_val>>8); UBRR0L = (unsigned char)UBRR_val; /* Enable receiver and transmitter */ UCSR0B = (1<<RXEN0)|(1<<TXEN0); /* Set frame format: 8data, 2stop bit */ //UCSRC = (1<<URSEL)|(1<<USBS)|(3<<UCSZ0); fdevopen(USART_putchar,USART_getchar);// }