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各位高手 小弟现在做毕业设计 第一次接触单片机 用的就是R8C13
我编写了一个串口调试程序 但连到电脑上用网上下的串口调试程序测试后接收的数据和发射的不一样 比如发送45的时候接收到的是67 不知道怎么回事 请各位高手指点 因为小弟确实很水 所以大家不要笑我！
#include "sfr_r813.h"
char ch;

void sfr_init(void)
{
 /* Setting port registers */
   /* Clock synchronous serial I/O setting */
 
    u1brg = 32-1; // 38400:0x17, 9600:0x2F (64+1) =  7.372.800 / 16 / 9600 UART0 auf 9600 Baud bei 7,3 MHz (Fehler ist ?)
 u1mr = 0x05; // 0000.0101 UART1: 8bit; int. CLK; 1 Stop Bit; No parity; No Sleep
     // || | |^^^  8 Bit
     // || | ^   Interne Clock
     // || ^  1 Stop Bit
     // |^  Parit鋞 ausgeschaltet
     // ^  Sleep Mode deaktiviert

 u1c0 = 0x00; // 0000.0000 UART1: f1 as CLK; CTS, RTS disabled
     // ||||   ^^  f1 is selected as clock
     //    ^     write 0

 u1c1 = 0x05; // 0000.0101 UART1: Rx, TX enabled,   00000101
     //       | ^  Tx enabled
     //       ^     Rx enabled

 txd1sel=1;
 ucon = 0x20; //  P00=RXD11,  00100100, 00100000

}

void sendTxd1(unsigned char data)
{
 while (ti_u1c1 == 0); //Wait for transmission buffer emty
 u1tb = data;        // Set transmission data
    te_u1c1 = 1;         // Transmission enabled
}

unsigned char receiveRxd1 (void)
{
 unsigned char data;
 unsigned char dummy;
 while (ir_s1ric == 0);  //Wait for received data
    ir_s1ric = 0;      //Clear serial reception flag
 data = u1rbl;       // Get reception data
 dummy = u1rbh;       // Get error
 re_u1c1 = 1;        // Reception enabled

 return data;
}
           

void main(void)
{
 unsigned char i;
    /*-------------------------------------------------
    -  Change on-chip oscillator clock to Main clock  -
    -------------------------------------------------*/

    prc0 = 1;            /* Protect off */
    cm13 = 1;            /* Xin Xout */
    cm15 = 1;            /* XCIN-XCOUT drive capacity select bit : HIGH */
    cm05 = 0;            /* Xin on */
    cm16 = 0;            /* Main clock = No division mode */
    cm17 = 0;
    cm06 = 0;            /* CM16 and CM17 enable */
    asm("nop");          /* Waiting for stable of oscillation */
    asm("nop");
    asm("nop");
    asm("nop");
    ocd2 = 0;            /* Main clock change */
    prc0 = 0;            /* Protect on */
 sfr_init(); 

    while (1)
 {
  
  ch = receiveRxd1();
  

  sendTxd1(ch);
  
  
 }

 
}