來個(gè)最簡單的串口程序，添加2440lib.c，程序如下：

#include "2440addr.h"

#include "Option.h"

#include "def.h"

unsigned int PCLK;

extern void Uart_Printf(char *fmt,...);

extern void Uart_Init(int pclk,int baud);

extern void Port_Init(void);

extern void Uart_Select(int ch);//外部函數(shù)申明，不然一直有警告。看著不爽

void delay(void)

{

unsigned int i,j;

for(i=0;i<1000;i++)

for(j=0;j<1000;j++)

;

}

void Main(void)

{

Uart_Select(0);//選擇串口0

Port_Init();

Uart_Init(50000000,115200);//串口初始化，時(shí)鐘參數(shù)當(dāng)為0時(shí)選擇的時(shí)候PCLK為50MHz，效果一樣

Uart_Printf("nn");

delay();

while(1)

{

Uart_Printf("I love caimanjun more than myselfn"); //打印字符串

delay();

Uart_Printf("yes I do! n");

delay();

}

}