Usart Receive problem

[samnang39]

Delay in Hi-tech c compiler

Dear all

any one show the dalay in Hi-tech c compiler

 

[xxtigerxx]

please give more details what do you mean?

 

[bigdogguru]

Are you referring to __delay_us() and __delay_ms() routines?

Following is an example of their use, however note it is mandatory that "#define _XTAL_FREQ" be set the to actual system clock frequency for the routines to generate the correct delay.

#include <htc.h>	// Required to interface with delay routines

#ifndef _XTAL_FREQ
 // Unless already defined assume 4MHz system frequency
 // This definition is required to calibrate __delay_us() and __delay_ms()
 #define _XTAL_FREQ 4000000
#endif

/** demonstration of various built-in delay mechanisms */
void main(void){
	while(1){
		NOP();
		_delay(1000);		// delay for 1000 instruction cycles
		CLRWDT();
		__delay_us(400);	// delay for 400 microseconds
		CLRWDT();
		__delay_ms(2);		// delay for 2 milliseconds
		CLRWDT();
	}
}

BigDog

 

[samnang39]

my compiler don't understand _delay_ms();

 

[bigdogguru]

my compiler don't understand _delay_ms();

There are two underscores in both __delay_us() and __delay_ms(), not one as is your reply.

There is only one underscore in _XTAL_FREQ.

What version of the Hi-Tech Compiler are you using?

Is it operating in "Lite", "Standard" or "Pro" mode?


I would recommend copying and pasting the code directly from the code box above and then attempt to compiler it.

BigDog