signal integrity

[mister_e]

There is one questionable thing about this, when I have a led at the output to test the pwm. i see like a flickering. the reason why I think this is the case. is because the correct pause sequence is not there. Can you please help with a better solution

remove the capacitor around your 20MHZ crystal an post the answer.

I was wondering how do I control the pwm for this. lets say I have a button .. and while I pressed the button the PWM will increase

refer to this section

    ' Let's see how many time we have come here
    ' -----------------------------------------
    '
	if PWMIncStep<600 then
		PWMIncStep=PWMIncStep + 1  ' not enough, come again and do 
		                           ' one more PWM increment step.
	else
        pwmincstep = 0  ' enough is enough, pass go and claim 200$
                        ' Also, since you're there redo the ramp-up
                        '
        toggle timerled ' toggle status LED
	endif

the easyest solution is to add a simple IF THEN statement

    ' Let's see how many time we have come here
    ' -----------------------------------------
    '
	if PWMIncStep<600 then
            If PushButton  then   	' If pushbutton is pressed    
               PWMIncStep=PWMIncStep + 1  ' do the PWM
            endif 
	else
        pwmincstep = 0  ' enough is enough, pass go and claim 200$
                        ' Also, since you're there redo the ramp-up
                        '
        toggle timerled ' toggle status LED
	endif