求嵌入式大神指点

本人学生一枚，最近在做期末课设设计，题目是无线数据采集，但是因为没有设备，老师让我用串行通信做，以下是我现在的代码，也不知道思路和方向对不对，而且总觉得代码太简单太少，求大神指点

#include <stdio.h>
// 引入相关芯片的头文件
#include <LPC2103.H>
#include "TFT018.h"

/*----------------------------------------------------------*\
 | TYPE DEFINE                                              |
\*----------------------------------------------------------*/
typedef char               S8;
typedef unsigned char      U8;
typedef short              S16;
typedef unsigned short     U16;
typedef int                S32;
typedef unsigned int       U32;
typedef long long          S64;
typedef unsigned long long U64;
typedef unsigned char      BIT;
typedef unsigned int       BOOL;

// 发光管接在P0.3引脚
#define    LED    (1<<3)

/*----------------------------------------------------------*\
 | Delay ns                                                 |
\*----------------------------------------------------------*/
void DelayNS (U32 dly) {
    U32 i;
   
    for ( ; dly>0; dly--)
        for (i=0; i<5000; i++);
    }
/*----------------------------------------------------------*\
 | UART0 Initial                                            |
\*----------------------------------------------------------*/
void  UART0_init(void)    {
    unsigned short int fdiv;

    PINSEL0 |= 0x00000005;               // 设置I/O连接到UART0

    U0LCR = 0x83;                      // DLAB = 1，可设置波特率
    fdiv = (60000000/16)/9600;
    U0DLM= fdiv/256;
    U0DLL = fdiv%256;
    U0LCR = 0x03;
    }

/*----------------------------------------------------------*\
 | UART0 Send Char                                          |
\*----------------------------------------------------------*/
void  UART0_PutCh(unsigned char Ch)    {
    U0THR = Ch;                            // 发送数据
    while( (U0LSR&0x40)==0 );          // 等待数据发送完毕
    }

/*----------------------------------------------------------*\
 | UART0 Send String                                        |
\*----------------------------------------------------------*/
void  UART0_PutStr(unsigned char const *str) {
    while(*str)
        UART0_PutCh(*str++);          // 发送数据
    }
/*----------------------------------------------------------*\
 | UART0 Get Char                                           |
\*----------------------------------------------------------*/
unsigned char  UART0_GetCh(void)    {
    while( (U0LSR&0x01)==0 );
    return U0RBR;
    }

int main(void) {
    unsigned char s[]="";
    IODIR=LED;    //设置LED控制口为输出
    IOCLR=LED;
    UART0_init();
    for(;;) {
        UART0_PutStr(s);
        s[0]=UART0_GetCh();
        if(s[0] == '0'){
           IOCLR = LED;
           }
        if(s[0] == '1'){
           IOSET = LED;
           }
        UART0_PutCh(s[0]);
        DelayNS(10);
        }
    }

[此贴子已经被作者于2017-7-10 21:33编辑过]