Serial port interruption experiment based on 51 single chip microcomputer-EEWORLD

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************************** Copyright(C) CaKe ****************************************

==================================================

===============**Copyright information: CaKen Studio ==============

===============**File name: main.c ==============

===============**Author : CaKen ==============

===============**Version number: V1.0 ==============

===============**Time : 2014.08.27 ===============

===============**Function description: Serial port interruption experimental test ===============

================================================

*******************************************************

#include

#define uchar unsigned char

#define uint unsigned int

uchar data trdata[]={'C','a','K','e','n','_', 'Z','H','C','K','-' ,'5','1',0xaa};

sbit KEY = P3^2;

*******************************************************

Function name: UART_Init();

transfer:();

Remark:

*******************************************************

void UART_Init(void)

{

SCON = 0x50; //Serial port working mode is 1, serial reception is allowed

TMOD = 0x20; //Timer 1 works in mode 2

TH1 = 0xfd; //Baud rate 9600bps fosc="11".0592MHz

TL1 = 0xfd;

EA = 1; // Enable general interrupt

ES = 1; //Open serial port interrupt

TR1 = 1; // Allow timer 1 to work

}

********************************************************

Function name: Delay function

transfer:();

******************************************************

void delay1ms(uint i)

{

flying j;

while(i--)

{

for(j=0;j<115;j++) //1ms benchmark delay program

{;}

}

******************************************************

Function name: Uart_SendChar();

transfer:();

Parameters:

return value:

result:

Note: Send characters

*******************************************************

void Uart_SendChar(unsigned char dat)

{

SBUF = dat; //The data to be sent is written into the buffer

while(!TI); //Wait for sending to complete

TI = 0; // Clear the send flag

}

****************************************************

Function name: Uart_SendString();

transfer:();

Parameters:

return value:

result:

Note: Send string

*****************************************************

void Uart_SendString()

{ fly i=0;

while(trdata[i]!=0xaa)

{

SBUF=trdata[i];

while(!IF);

IF = 0;

i++;

}

***********************************************

Function name:

transfer:();

Parameters:

return value:

result:

Remark:

*****************************************************

void main(void)

{

UART_Init(); //Initialize the serial port

while(1)

{

if(KEY==0)

{

delay1ms(20);

if(KEY==0)

{

Uart_SendString();

while(!KEY); //Wait for the key to be released

}

******************************************************

Function name: Serial port interrupt function

********************************************************

void INT_UartRcv(void) interrupt 4

{

unsigned char Rcv = 0;

if(RI) //Query the receive flag (set to 1 when data is sent)

{

RI = 0; // clear the receiving flag

Rcv = SBUF; //Storage buffer data

P0 = SBUF;

Uart_SendChar(Rcv); //Let the data uploaded from the computer to the MCU be displayed on the computer when it is returned

}

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------------------- CaKen Studio Original Work --------------------

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