Backlight Percentage

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Backlight Percentage

Postby AndrewB » Thu Jan 09, 2014 4:03 pm

Display backlight %
Why does this cmd shows 0 when the value drops below 1023?
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Joined: Thu Jan 02, 2014 3:38 pm

Re: Backlight Percentage

Postby David John Barker » Thu Jan 09, 2014 4:58 pm

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performs integer division on the GetBacklight / 1023, which will equal 0. To force floating point, you use
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However, you really don't want to use floating point maths on something as simple as a percentage. Try
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Dogm.WriteAt(2,1,"PWM=",CStr(Getbacklight * 100 / 1023),"% ")

Note it will only only go up to 99% on the LCD+ demo. This is because
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Dogm.SetBacklight(Dogm.GetBacklight + 5)

will in some cases set the backlight to < 1023. To test your percent, use
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Dogm.SetBacklight(Dogm.GetBacklight + 1)
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David John Barker
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