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標題: stc15f系列MCU讀取程序區ID號并用軟件模擬串口輸出顯示程序舉例 [打印本頁]

作者: lzj23642008 時間: 2018-12-18 15:50
標題: stc15f系列MCU讀取程序區ID號并用軟件模擬串口輸出顯示程序舉例

//本示例在Keil開發環境下請選擇Intel的8058芯片型號進行編譯
//若無特別說明,工作頻率一般為11.0592MHz

#include "reg51.h"

//-----------------------------------------
//define baudrate const
//BAUD = 65536 - FOSC/3/BAUDRATE/M (1T:M=1; 12T:M=12)
//NOTE: (FOSC/3/BAUDRATE) must be greater then 98, (RECOMMEND GREATER THEN 110)

//#define BAUD  0xF400                // 1200bps @ 11.0592MHz
//#define BAUD  0xFA00                // 2400bps @ 11.0592MHz
//#define BAUD  0xFD00                // 4800bps @ 11.0592MHz
//#define BAUD  0xFE80                // 9600bps @ 11.0592MHz
//#define BAUD  0xFF40                //19200bps @ 11.0592MHz
#define BAUD  0xFFA0                   //38400bps @ 11.0592MHz

//#define BAUD  0xEC00                // 1200bps @ 18.432MHz
//#define BAUD  0xF600                // 2400bps @ 18.432MHz
//#define BAUD  0xFB00                // 4800bps @ 18.432MHz
//#define BAUD  0xFD80                // 9600bps @ 18.432MHz
//#define BAUD  0xFEC0                //19200bps @ 18.432MHz
//#define BAUD 0xFF60             //38400bps @ 18.432MHz

//#define BAUD  0xE800                // 1200bps @ 22.1184MHz
//#define BAUD  0xF400                // 2400bps @ 22.1184MHz
//#define BAUD  0xFA00                // 4800bps @ 22.1184MHz
//#define BAUD  0xFD00                // 9600bps @ 22.1184MHz
//#define BAUD  0xFE80                //19200bps @ 22.1184MHz
//#define BAUD  0xFF40                //38400bps @ 22.1184MHz
//#define BAUD  0xFF80                //57600bps @ 22.1184MHz

#define ID_ADDR_RAM 0x71             //STC15F104W系列ID號的存放在RAM區的地址
//#define ID_ADDR_RAM 0x71             //STC15F104W系列ID號的存放在RAM區的地址
//#define ID_ADDR_RAM 0xF1             //STC15F204EA系列ID號的存放在RAM區的地址

#define ID_ADDR_ROM 0x0ff9             //STC104W系列ID號的存放在ROM區的地址

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;
sbit RXB = P3^0;                      //define UART TX/RX port
sbit TXB = P3^1;

typedef bit BOOL;
typedef unsigned char BYTE;
typedef unsigned int WORD;

BYTE TBUF,RBUF;
BYTE TDAT,RDAT;
BYTE TCNT,RCNT;
BYTE TBIT,RBIT;
BOOL TING,RING;
BOOL TEND,REND;

void UART_INIT();
void UART_SEND(BYTE dat);

BYTE t, r;
BYTE buf[16];

void main()
{
// BYTE idata *iptr;
BYTE code *cptr;
BYTE i;

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;

TMOD = 0x00;                      //timer0 in 16-bit auto reload mode
AUXR = 0x80;                      //timer0 working at 1T mode
TL0 = BAUD;
TH0 = BAUD>>8;                   //initial timer0 and set reload value
TR0 = 1;                         //tiemr0 start running
ET0 = 1;                         //enable timer0 interrupt
PT0 = 1;                         //improve timer0 interrupt priority
EA = 1;                            //open global interrupt switch

UART_INIT();
// iptr = ID_ADDR_RAM;             //從RAM區讀取ID號
// for (i=0; i<7; i++)             //讀7個字節
// {
//       UART_SEND(*iptr++);          //發送ID到串口
// }

cptr = ID_ADDR_ROM;                //從程序區讀取ID號
for (i=0; i<7; i++)                //讀7個字節
{
      UART_SEND(*cptr++);          //發送ID到串口
}

while (1);
}

//-----------------------------------------
//Timer interrupt routine for UART

void tm0() interrupt 1 using 1
{
if (RING)
{
      if (--RCNT == 0)
      {
         RCNT = 3;                //reset send baudrate counter
         if (--RBIT == 0)
         {
            RBUF = RDAT;          //save the data to RBUF
            RING = 0;             //stop receive
            REND = 1;             //set receive completed flag
         }
         else
         {
            RDAT >>= 1;
            if (RXB) RDAT |= 0x80;  //shift RX data to RX buffer
         }
      }
}
else if (!RXB)
{
      RING = 1;                      //set start receive flag
      RCNT = 4;                      //initial receive baudrate counter
      RBIT = 9;                      //initial receive bit number (8 data bits + 1 stop bit)
}

if (--TCNT == 0)
{
      TCNT = 3;                      //reset send baudrate counter
      if (TING)                      //judge whether sending
      {
         if (TBIT == 0)
         {
            TXB = 0;             //send start bit
            TDAT = TBUF;          //load data from TBUF to TDAT
            TBIT = 9;             //initial send bit number (8 data bits + 1 stop bit)
         }
         else
         {
            TDAT >>= 1;          //shift data to CY
            if (--TBIT == 0)
            {
                  TXB = 1;
                  TING = 0;          //stop send
                  TEND = 1;          //set send completed flag
            }
            else
            {
                  TXB = CY;          //write CY to TX port
            }
         }
      }
}
}

//-----------------------------------------
//initial UART module variable

void UART_INIT()
{
TING = 0;
RING = 0;
TEND = 1;
REND = 0;
TCNT = 0;
RCNT = 0;
}

//-----------------------------------------
//Send UART data

void UART_SEND(BYTE dat)
{
while (!TEND);
TEND = 0;
TBUF = dat;
TING = 1;
}

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