# include
Reference address：Serial port baud rate sending data program
typedef unsigned char uint8;
typedef unsigned int uint16;
typedef unsigned int uint16;
uint8 num = 0;
void delay(uint16 n) //delay function
{
while(n--);
}
void delay(uint16 n) //delay function
{
while(n--);
}
void UART_init(void)
{
SCON = 0x50; //The serial port control register is in mode 1, M1 = 1; M0 = 0 REN = 1, open and allow the serial port to receive data
TMOD = 0x20; //Set timer 1 to auto-reload mode. That is, method 2
TH1 = 0xFD; //TH1 = TL1 = 256 - 11059200/(12 * 32 * 9600) (12 is 12 clock cycles)
TL1 = 0xFD;
TR1 = 1; //Allow the serial port to receive data
}
void UART_send_byte(uint8 dat)
{
SBUF = dat;
while(!TI); //When sending the stop bit, it is set to 1 by hardware and must be cleared by software
TI = 0;
}
main()
{
UART_init(); //Serial port initializationwhile
(1)
{
UART_send_byte(num++);
delay(20000);
}
}
{
SCON = 0x50; //The serial port control register is in mode 1, M1 = 1; M0 = 0 REN = 1, open and allow the serial port to receive data
TMOD = 0x20; //Set timer 1 to auto-reload mode. That is, method 2
TH1 = 0xFD; //TH1 = TL1 = 256 - 11059200/(12 * 32 * 9600) (12 is 12 clock cycles)
TL1 = 0xFD;
TR1 = 1; //Allow the serial port to receive data
}
void UART_send_byte(uint8 dat)
{
SBUF = dat;
while(!TI); //When sending the stop bit, it is set to 1 by hardware and must be cleared by software
TI = 0;
}
main()
{
UART_init(); //Serial port initializationwhile
(1)
{
UART_send_byte(num++);
delay(20000);
}
}
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