stc.c

STC12LE5412RC单片机上通过nRF905芯片实现数据无线收发功能的源码。

/*#include <intrins.h>
#include "REG52STC.H"

sbit MCU_led0=P1^0;
sbit MCU_led1=P1^1;

#define Self_Define_ISP_Download_Command 0x22
#define RELOAD_COUNT 0xfd

void serial_port_initial();
void UART_send(unsigned char);
void soft_reset_to_ISP_Monitor(void);
void delay(unsigned int);
void MCU_led_Display(void);

void main(void)
{
   unsigned char i=0;
   serial_port_initial();
   while(1)
   {
        MCU_led_Display();
   }

   UART_send(0x34);
   UART_send(0xa7);
   EA  =  1;  //may be in initial 
   while(1);
}*/

void serial_port_initial()
{
   SCON=  0x50;
   TMOD=  0x21;
   TH1 =  RELOAD_COUNT;
   TL1 =  RELOAD_COUNT; 
   TR1 =  1;
   ES  =  1; //switch on the serial interrupt
//   EA  =  1; 
}

void UART_send(unsigned char i)
{
   ES  =  0;
   TI  =  0;  //clear serial port sending finished interrupt require flag
   SBUF=  i;
   while(TI==0);
   TI  =  0;
   ES  =  0;
}

void UART_receive_Interrrupt(void) interrupt 4
{
   unsigned char k=0;
   if(RI==1)
   {
     RI  =  0;
	 k   =  SBUF;
     MCU_led0=0;
     delay(3);
     MCU_led0=1;
	 if(k==Self_Define_ISP_Download_Command)
	 {
	    delay(1);
		delay(1);
		soft_reset_to_ISP_Monitor();
	 }
	 UART_send(k);
   }
   else
   {
     TI=0;
   }
}

void soft_reset_to_ISP_Monitor(void)
{
   ISP_CONTR = 0x60;
}

void delay(unsigned int i)  //delay 1s
{
   unsigned int k=0;
   unsigned int g=0;
   for(k=0;k<5*i;k++)
   {
      for(g=0;g<60000;g++)
	  {
	    _nop_();
		_nop_();
		_nop_();
		_nop_();
		_nop_();
	  }
   }
}

void MCU_led_Display(void)
{
   unsigned char i=0;
   MCU_led0=0;
   for(i=0;i<3;i++)
   {
     MCU_led0=~MCU_led0;
	 delay(1);
     MCU_led0=~MCU_led0;
	 delay(1);
   }
   MCU_led0=0;
}