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Forum Index : Microcontroller and PC projects : PWM Channel, STOP Query

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Chopperp

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Joined: 03/01/2018
Location: Australia
Posts: 1106

Posted: 06:07am 10 Jun 2018

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Hi,

As an aside to Zonker's post on PWM, can anyone tell me why the PWM STOP code within the loop prevents the actual PWM code from working. Place it outside the loop & it works as expected.

I can't see that I am doing anything wrong.

option autorun on

do
for x = 1 to 9
'pwm 1,stop 'Loop does not work with this enabled
width = x * 10
pause 1000
pwm 1, 100, width
next x

pwm 1,stop 'Loop works with this enabled

loop

ChopperP

JohnS
Guru

Joined: 18/11/2011
Location: United Kingdom
Posts: 4126

Posted: 06:55am 10 Jun 2018

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With it in the loop you will do this:
1. at x=1, start the pwm
2. at x=2 (about 10uS later or so) you will stop the PWM

and so on.

So it is working but you immediately stop it as there is no time delay between loops.

John

Chopperp

Guru

Joined: 03/01/2018
Location: Australia
Posts: 1106

Posted: 07:37am 10 Jun 2018

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Thanks John.

Works with the pause moved down a bit.

ChopperP

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