Ps2手柄在单片机中的应用源程序

ID:1009304 · 发表于 2022-3-9 19:46

修改头文件和硬件连接。
#include <iom128v.h>
#include <macros.h>
#define uchar unsigned char
#define uint unsigned int

  //DO数据
uchar scan[9]={0x01,0x42,0x00,0x00,0x00,0x00,0x00,0x00,0x00};
  //存放DI数据
uchar re_code[9];
uint m;

//共阴数码管段码
uchar ddd[]={0x3F,0x06,0x5B,0x4F,0x66,0x6D,0x7D,0x07,0x7F,0x6F,0x77,0x7C,0x39,0x5E,0x79,0x71};
//位码
uchar www[]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};

void port_init(void)
{
  DDRE=0xff;
  PORTE=0x00;  //段选

  DDRB=0xff;
  PORTB=0xff;  //位选

  //PD0->DAT输入；PD1->CMD输出；PD2->CS输出；PD3->CLK输出
  DDRD  =(0<<PD0)|(1<<PD1)|(1<<PD2)|(1<<PD3) ;
  PORTD =0;
}

void delay(uint n)
{
      uint i;
      for(i=0;i<n;i++);
}

uchar scanout(uchar command) //向手柄发送命令并接受反馈的子程序
{
uchar i,j=1;
uchar res=0;
for(i=0;i<8;i++)    //逐位接收
{
      if(command&0x01)    cmd_set;
      else                         cmd_clr;
      command=command>>1;
      delay(1);
      clk_clr;
      delay(1);                            //这里延时很关键，太多了手柄就反应迟钝了
      if(PIND&0x01) res=res+j;    //这里就开始同步接收DI值了
      j=j<<1;
      clk_set;
      delay(2);
}
return res;
}
void Read_PS2(void)       //向手柄发送DO并将反馈DI存入re_code[ ]中
{
      uchar i;
      cs_clr;
      for(i=0;i<9;i++)       re_code=scanout(scan);
      cs_set;
}
void main(void)
{
      port_init();
      delay(50);
  while(1)
      {
      Read_PS2();
      delay(200);

      m=re_code[3]*256+re_code[4];

      PORTE=ddd[m/256/16];
      PORTB=www[3];
      delay(50);
      PORTE=ddd[m/256%16];
      PORTB=www[2];
      delay(50);
      PORTE=ddd[m%256/16];
      PORTB=www[1];
      delay(50);
      PORTE=ddd[m%256%16];
      PORTB=www[0];
      delay(50);

      PORTE=ddd[out[7]/16];
      PORTB=www[7];
      delay(50);
      PORTE=ddd[out[7]%16];
      PORTB=www[6];
      delay(50);
      PORTE=ddd[out[8]/16];
      PORTB=www[5];
      delay(50);
      PORTE=ddd[out[8]%16];
      PORTB=www[4];
      delay(50);
      }
}

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Ps2手柄在单片机中的应用源程序

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