原创 ATmega88 串口小实验

前两天做了一个AVR单片机串口发送，PC端串口调试软件接收小实验，串口寄存器初使化由ICCAVR生成：

#include "avr/io.h " //GCC

void uart0_init(void)
{
// Target : M88
// Crystal: 3.6864Mhz
//UART0 initialize
// desired baud rate: 9600
// actual: baud rate:9600 (0.0%)
// char size: 8 bit
// parity: Disabled
 UCSR0B = 0x00; //disable while setting baud rate
 UCSR0A = 0x00;
 UCSR0C = 0x06;
 UBRR0L = 0x17; //set baud rate lo
 UBRR0H = 0x00; //set baud rate hi
 UCSR0B = 0x08;
}

void USART_Transmit(unsigned char data)
{
 //等待发送缓冲器为空
 while(!(UCSR0A&(1<<UDRE0)));
 //将数据放入缓冲器，发送出据
 UDR0=data;
}

int main()
{
uart0_init();
while(1)
  {
  USART_Transmit('w');
  USART_Transmit('a');
  USART_Transmit('n');
  USART_Transmit('g');
  USART_Transmit('q');
  USART_Transmit('i');
  USART_Transmit('s');
  USART_Transmit('h');
  USART_Transmit('a');
  USART_Transmit('o');
  USART_Transmit(0x0D);
  USART_Transmit(0x0A);// 0x0D（回车）0x0A（换行）

  USART_Transmit(0xCD);
  USART_Transmit(0xF5);//王

  USART_Transmit(32);//空格

  USART_Transmit(0xC6);
  USART_Transmit(0xE4);//其
  USART_Transmit(0xC9);
  USART_Transmit(0xD9);//少

  USART_Transmit(0x0D);
  USART_Transmit(0x0A);

  USART_Transmit(0xB5);
  USART_Transmit(0xE7);//电
  USART_Transmit(0xD1);
  USART_Transmit(0xB9);//压

  USART_Transmit(0x0D);
  USART_Transmit(0x0A);

  }
}