1. The complete code is as follows: C
#include#define uchar unsigned char
#define uint unsigned int
void send(uchar state)
{
SBUF=state;
while(TI==0);
TI=0;
}
void SCON_init(void)
{
TMOD=0x20;//6T mode, 11.05992@115200
SCON=0x50;
PCON=0x80;
TL1=0xFF;
TH1=0xFF;
TR1=1;
/*SCON=0x50;//Timer 2 mode, 11.0592@115200
TH2=0xFF;
TL2=0xFD;
RCAP2H=0xFF;
RCAP2L=0xFD;
TCLK=1;
RCLK=1;
C_T2=0;
EXEN2=0;
TR2=1;*/
}
void main()
{
SCON_init();
while(1)
{
send('A');
}
}
2. Remarks
The "SCON_init" subroutine is a subroutine for serial port baud rate setting and initialization. It can be called once at the beginning of the main program. In the entire serial port baud rate initialization subroutine, the complete codes of our two methods are in it. The code that is not marked with comment symbols is the code for 6T mode, and the code that is marked with comment symbols is implemented through timer 2 in 12T mode. code.
The setting of 6T or 12T mode is selected by yourself when programming the program, and no code setting is required. Timer 2 is only available in enhanced 51 microcontrollers such as STC89C52RC.
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