Backlight Percentage

[AndrewB]

Display backlight %
Why does this cmd shows 0 when the value drops below 1023?
Dogm.WriteAt(2,1,"PWM=",Str((Getbacklight/1023)*100),"%")

[David John Barker]

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(Getbacklight/1023)*100

performs integer division on the GetBacklight / 1023, which will equal 0. To force floating point, you use

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(Getbacklight/1023.0)*100

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)