5-2.c

这是HOLTEK HT 48系列单片机应用实例

unsigned char _pac @0x13;
unsigned char _pa  @0x12;
unsigned char _pbc @0x15;
unsigned char _pb  @0x14;
unsigned char _intc	@0x0b;
unsigned char _tmr0@0x0d;
unsigned char _tmr0c@0x0e;
unsigned char _tmr1h@0x0f;
unsigned char _tmr1l@0x10;
unsigned char _tmr1c@0x11;
#pragma vector interrup0 @ 0x4
#pragma vector timer0 @ 0x8
#pragma vector timer1 @ 0xc
 unsigned int a,b;
void delay(){unsigned long int i;for(i=0;i<5000;i++);}
void timer1()
{
 _tmr1c=0x80;
 for(a=0;a<5;a++)
 {
  _pa=0x00;
  delay();
  _pa=0x80;
  delay();
 }
 _tmr1h=0x00;
 _tmr1l=0x00;
 _tmr1c=0x90;
}
void timer0()
{
 _tmr0c=0x48;
 for(b=0;b<5;b++)
 {
  _pa=0xff;
  delay();
  _pa=0xf0;
  delay();
 }
 _tmr0c=0x58;
}
void interrup0()
{
 unsigned int a;
 for(a=0;a<5;a++)
 {
 _pa=0xff;
 delay();
 _pa=0xfe;
 delay();
 }
}
void main()
{
 _intc=0x0f;
 _tmr0c=0x40;
 _pac=0x00;
 _tmr0=0xfb;
 _tmr0c=0x50;
 _tmr1h=0x00;
 _tmr1l=0x00;
 _tmr1c=0x90;
 while(1)
 {
  _pa=0xff;
  delay();
  _pa=0x00;
  delay();
 }
}