pic18f43k22 salvo RTOS

[bhan1992]

im trying to blink an led. the rate which it blink depends on the adc value. i have tested that the adc is working fine. but when i load this piece of code, the led just wont light up at all.
is there any other way of blinking the led depending on the adc value besides this rtos?

#include <p18f43k22.h>
#include <adc.h>
#include <delays.h>
#include <stdlib.h>
#include <timers.h>
#include <salvo.h>
#undef OSC

int result;

void slow_beep (void);
void medium_beep (void);
void fast_beep (void);
void isr (void);

_OSLabel (_slow_beep)
_OSLabel (_medium_beep)
_OSLabel (_fast_beep)

#pragma code high_vector = 0x08
void interrupt (void)
{
	_asm goto isr _endasm
}
#pragma code
#pragma interrupt isr

void slow_beep (void)
{
	while(result >= 250 && result < 600)
	{
		PORTBbits.RB5 = ~PORTBbits.RB5;
		OS_Delay(65, _slow_beep);	//0.65 seconds
	}
}
void medium_beep (void)
{
	while(result >= 600 && result < 850)
	{
		PORTBbits.RB5 = ~PORTBbits.RB5;
		OS_Delay(45, _medium_beep);	//0.45 seconds
	}
}
void fast_beep (void)
{
	while(result >= 850)
	{
		PORTBbits.RB5 = ~PORTBbits.RB5;
		OS_Delay(25, _fast_beep);	//0.25 seconds
	}
}

void main (void)
{
	TRISB = 0;

	OSCreateTask(slow_beep, OSTCBP(1), 7);
	OSCreateTask(medium_beep, OSTCBP(2), 7);
	OSCreateTask(fast_beep, OSTCBP(3), 7);

	OpenTimer0 (TIMER_INT_ON & T0_16BIT & T0_SOURCE_INT & T0_PS_1_1);
	WriteTimer0(55536);
	INTCONbits.GIE = 1;

	OpenADC(ADC_FOSC_32 & ADC_RIGHT_JUST & ADC_2_TAD, ADC_REF_VDD_VSS, ADC_INT_OFF );

	PORTB = 1;		//initialisation 0.7 second beep
	Delay10KTCYx(10);	
	PORTB = 0;

	while(1)
	{
	SetChanADC(ADC_CH0);
	ConvertADC();
	while(BusyADC());
	result = ReadADC();
	OSSched();
	OS_Delay(10,main)	//delay 0.1 second
	}
	CloseADC();
}

void isr (void)
{
	WriteTimer0(55536);
	OSTimer();	//creating 0.01 second system tick
	INTCONbits.TMR0IF = 0;
}

 

[Jinzpaul4u]

Hi there,

is there any other way of blinking the led depending on the adc value besides this rtos?

using interrupt routine..

 

[Venkadesh_M]

Are you connecting LED in RB5, and I think you have to change the while condition in every task.....

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Code C - [expand]
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void slow_beep (void)
{
    while(1)
    {
    if( result >= 250 && result < 600 )
      {
        PORTBbits.RB5 = ~PORTBbits.RB5;
        OS_Delay(65, _slow_beep);   //0.65 seconds
      }
    }
}

---

And also i don think blinking LED was three different tasks....