1._c

用与单片机开发,会个朋友们带来方便. 原代码驱动程序(ch451)

#include <iom16v.h>
#define clk   4   //pd4
#define dat   3   //pd5
#define load  5   //pd6
#define load1 6   //pd7
#define XTAL 4    //晶振频率，单位MHz
#define uchar unsigned char
/*******************************延时函数***********************************/
void delay_1us(void)                 //1us延时函数
  {
   asm("nop");
  }

void delay_nus(unsigned int n)       //N us延时函数
  {
   unsigned int i=0;
   for (i=0;i<n;i++)
   delay_1us();
  }

void delay_1ms(void)                 //1ms延时函数
  {
   unsigned int i;
   for (i=0;i<(unsigned int)(XTAL*143-2);i++);
  }

void delay_nms(unsigned int n)       //N ms延时函数
{
   unsigned int i=0;
   for (i=0;i<n;i++)
   {
      delay_1ms();
   }
}
/*******************************451写指令***********************************/

void  write(long  int x)
{
    long  int ch;
    int  i;
    ch = x;
    PORTD&= ~(1<<clk);      //  CLK
	PORTD&= ~(1<<load);
    for(i=0; i<12; i++)
{
        if(ch&0x001)
        {
            PORTD|= 0x08;   //数据为1   00100000
			ch >>= 1;
			PORTD&= ~(1<<clk);
			PORTD|= (1<<clk);
			
        }
        else
        {
            PORTD&= ~(0x08);  //数据为0
			ch >>= 1;
			PORTD&= ~(1<<clk);
			PORTD|= (1<<clk);
			
        }       
		
		}
		PORTD|= 1<<load;

}

void  write1(long  int x)
{
    long  int ch;
    int  i;
    ch = x;
    PORTD&= ~(1<<clk);      //  CLK
	PORTD&= ~(1<<load1);
    for(i=0; i<12; i++)
{
        if(ch&0x001)
        {
            PORTD|= 0x08;   //数据为1   00100000
			ch >>= 1;
			PORTD&= ~(1<<clk);
			PORTD|= (1<<clk);
			
        }
        else
        {
            PORTD&= ~(0x08);  //数据为0
			ch >>= 1;
			PORTD&= ~(1<<clk);
			PORTD|= (1<<clk);
			
        }       
		
		}
		PORTD|= 1<<load1;

}

/*******************************主函数***********************************/
int main( void )
{   
    int i=0,n=0,m=0;
	DDRD=0xff;    //设置为输出
	PORTD |=1<<dat;
	PORTD &=~(1<<dat);
	delay_nms(20);
    PORTD |=1<<dat;	
	write(0x201);
	write(0x401);
	write(0x500);	
	write1(0x201);
	write1(0x401);
	write1(0x500);
    while(1)
	{
	 	write(0x8ff);
		write1(0x8ff);
		delay_nms(1000);	
	}	
	
}
/*******************************END***********************************/