#include
Keywords：c51 1ms-6MHZ
Reference address：c51 1ms-6MHZ delay program
void delay(unsigned char n) //about n(ms) delay
{ unsigned char i,j,k;
for(k=0;k
for(j=0;j<5;j++) //about 1ms delay
{
for(i=0;i<31;i++) //about 0.1ms delay
{;}
}
}
}
main()
{ while(1)
{
delay(15);
}
}
/*About 15ms delay, need more accurate delay:
1. Fill in c51 frequency in keil uvision3\project\options for target\target\xtal.
2. Set 2 breakpoints before and after the delay statement.
3. Enter debug, record the time to run to 2 breakpoints in the sec item of the project workspace window, and get the delay time.
4. Adjust the delay() parameter as needed.
*/
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