The status of the MCU 1P1 port is transmitted to the MCU 2P2 port output through serial communication
/************************************************
send Message
***************************************/
#include
#define uchar unsigned char
#define uint unsigned int
void send(uchar state)
{
SBUF=state;
while(TI==0);
TI=0;
}
void SCON_init()
{
SCON=0X40; //Select serial communication mode 1
TMOD=0x20; //Set counter T1 to counting mode 2 (automatically reload initial value)
PCON=0x00; //Set baud rate multiplication
TH1=0xFD;
TL1=0xFD;
TI=0;
TR1=1;
}
void main()
{
SCON_init();
while(1)
send(P1);
}
/**********************************************
Receiver receives information
***************************************/
#include
#define uchar unsigned char
#define uint unsigned int
uchar state;
void receive()
{
while(RI==0);
state=SBUF;
RI=0;
}
void SCON_init()//Accept setting function
{
SCON=0X50; //Select serial communication mode 1, allow to accept
TMOD=0x20; //Set counter T1 to counting mode 2 (automatically reload initial value)
PCON=0x00; //Set baud rate multiplication
TH1=0xFD; //The counter works in mode 2, the initial value is stored in the high bit, and it is automatically loaded into TL0 after the count overflows
TL1=0xFD; //Counting unit, starting from FD
RI=0;
TR1=1;
}
void main()
{
SCON_init();
while(1) //wait for acceptance
{
receive();
P2=state;
}
}
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