單片機串口通信程序在發送兩個字符以上時出現亂碼

ID:10568 · 發表于 2017-10-20 09:48

使用的單片機芯片是STC15W408AS，程序是STC下載器軟件的的例子上改了一點，都因為我希望能接收一段字串
現象是，通電可以收到發過一來的字串，用串口軟件發一個字符及接收回顯都沒有問題，但發兩個及以上字符，第一個字符顯示正常，之后就是亂碼了。請指教。

/*---------------------------------------------------------------------*/
/* --- STC MCU Limited ------------------------------------------------*/
/* --- STC15F4K60S4 ?? ???2????1?????????------------*/
/* --- Mobile: (86)13922805190 ----------------------------------------*/
/* --- Fax: 86-0513-55012956,55012947,55012969 ------------------------*/
/* --- Tel: 86-0513-55012928,55012929,55012966-------------------------*/
/* ????????????,??????????STC?????? */
/* ????????????,??????????STC?????? */
/*---------------------------------------------------------------------*/
//????Keil????????Intel?8058????????
//??????,???????11.0592MHz
#include "reg51.h"
#include "intrins.h"
typedef unsigned char BYTE;
typedef unsigned int WORD;
#define FOSC 11059200L //????
#define BAUD 115200 //?????
#define NONE_PARITY 0 //???
#define ODD_PARITY 1 //???
#define EVEN_PARITY 2 //???
#define MARK_PARITY 3 //????
#define SPACE_PARITY 4 //????
#define PARITYBIT EVEN_PARITY //?????
sfr P0M1 = 0x93;
sfr P0M0 = 0x94;
sfr P1M1 = 0x91;
sfr P1M0 = 0x92;
sfr P2M1 = 0x95;
sfr P2M0 = 0x96;
sfr P3M1 = 0xb1;
sfr P3M0 = 0xb2;
sfr P4M1 = 0xb3;
sfr P4M0 = 0xb4;
sfr P5M1 = 0xC9;
sfr P5M0 = 0xCA;
sfr P6M1 = 0xCB;
sfr P6M0 = 0xCC;
sfr P7M1 = 0xE1;
sfr P7M0 = 0xE2;
sfr AUXR = 0x8e; //?????
sfr T2H = 0xd6; //???2?8?
sfr T2L = 0xd7; //???2?8?
sfr P_SW1 = 0xA2; //?????????1
#define S1_S0 0x40 //P_SW1.6
#define S1_S1 0x80 //P_SW1.7
sbit P22 = P2^2;
bit busy;
unsigned char date;
void SendData(BYTE dat);
void SendString(char *s);
void main()
{
P0M0 = 0x00;
P0M1 = 0x00;
P1M0 = 0x00;
P1M1 = 0x00;
P2M0 = 0x00;
P2M1 = 0x00;
P3M0 = 0x00;
P3M1 = 0x00;
P4M0 = 0x00;
P4M1 = 0x00;
P5M0 = 0x00;
P5M1 = 0x00;
P6M0 = 0x00;
P6M1 = 0x00;
P7M0 = 0x00;
P7M1 = 0x00;
ACC = P_SW1;
ACC &= ~(S1_S0 | S1_S1); //S1_S0=0 S1_S1=0
P_SW1 = ACC; //(P3.0/RxD, P3.1/TxD)
// ACC = P_SW1;
// ACC &= ~(S1_S0 | S1_S1); //S1_S0=1 S1_S1=0
// ACC |= S1_S0; //(P3.6/RxD_2, P3.7/TxD_2)
// P_SW1 = ACC;
//
// ACC = P_SW1;
// ACC &= ~(S1_S0 | S1_S1); //S1_S0=0 S1_S1=1
// ACC |= S1_S1; //(P1.6/RxD_3, P1.7/TxD_3)
// P_SW1 = ACC;
#if (PARITYBIT == NONE_PARITY)
SCON = 0x50; //8??????
#elif (PARITYBIT == ODD_PARITY) || (PARITYBIT == EVEN_PARITY) || (PARITYBIT == MARK_PARITY)
SCON = 0xda; //9??????,??????1
#elif (PARITYBIT == SPACE_PARITY)
SCON = 0xd2; //9??????,??????0
#endif
T2L = (65536 - (FOSC/4/BAUD)); //????????
T2H = (65536 - (FOSC/4/BAUD))>>8;
AUXR = 0x14; //T2?1T??, ??????2
AUXR |= 0x01; //?????2???1???????
ES = 1; //????1??
EA = 1;
SendString("STC15F2K60S2\r\nUart Test !\r\n");
while(1);
}
/*----------------------------
UART ??????
-----------------------------*/
void Uart() interrupt 4 using 1
{
if (RI)
{
RI = 0; //??RI?
P1 = SBUF; //P0??????
date=P1;
P22 = RB8; //P2.2?????
SendData(date);
//SBUF=P1;
}
if (TI)
{
TI = 0; //??TI?
busy = 0; //????
}
}
/*----------------------------
??????
----------------------------*/
void SendData(BYTE dat)
{
while (busy); //???????????
ACC = dat; //?????P (PSW.0)
if (P) //??P??????
{
#if (PARITYBIT == ODD_PARITY)
TB8 = 0; //??????0
#elif (PARITYBIT == EVEN_PARITY)
TB8 = 1; //??????1
#endif
}
else
{
#if (PARITYBIT == ODD_PARITY)
TB8 = 1; //??????1
#elif (PARITYBIT == EVEN_PARITY)
TB8 = 0; //??????0
#endif
}
busy = 1;
SBUF = ACC; //????UART?????
}
/*----------------------------
?????
----------------------------*/
void SendString(char *s)
{
while (*s) //?????????
{
SendData(*s++); //??????
}
}

復制代碼

帳號		自動登錄	找回密碼
密碼			立即注冊

久久久久久久999_99精品久久精品一区二区爱城_成人欧美一区二区三区在线播放_国产精品日本一区二区不卡视频_国产午夜视频_欧美精品在线观看免费

單片機串口通信程序在發送兩個字符以上時出現亂碼