How to create a delay function in Keil uVision?

Question

Arduino has a delay function (ms) to pause a program for a specific time. This is very accurate in milliseconds.

I have a delay function in C used by Keil uVision for the AT89C5131 chip:

void delay( unsigned long duration)
{
    while ( ( duration -- )!= 0);
}

This does some delay, but a long value is not exactly like Arduino.

Is there a way to create a function that works like a delay () function in Arduino?

The crystal operates at a frequency of 24 MHz.

Any help would be appreciated.

+3

Yi xu chee Feb 04 '14 at 13:33

2 answers

Felipe lavratti · Answer 1 · 2014-02-04T16:19:44+0000

If you want to do animation, this is done in Keil:

#pragma O0
void wait(volatile uint32_t cnt) {
    while(cnt--)
        _nop_();
}

Tony · Answer 2 · 2014-02-04T13:44:23+0000

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