LCD slowly turn brighter

blurblur — Thu, 18 Apr 2019 08:21:41 GMT

Hi,

I am using K30 to drive LCD with charge pump and 8 backplanes.

My problem is when everytime I change the display, the segment slowly become brighter and will completely turn on after few second.

My question is, which register is controlling the speed of updating the LCD display. Or any other thing that I need to look at.

Please help.

Thank you.

Re: LCD slowly turn brighter

jingpan — Tue, 23 Apr 2019 03:09:34 GMT

Hi,

The LCD frame frequency is controlled by LCD_GCR.LCLK and other clock source selector/divider. But I think your problem maybe not lies on clock speed or frame speed.

K30's LCD module is same as KM34's LCD module. KM34 has TWR board which has a 1/8 duty LCD panel. Please download a KM34 SDK package. There is a SLCD demo in the package. You can refer to the demo and check your software setting and hardware.

If the problem is still there, you can share your code here. I'll help you to solve it.

Regards,

Jing

Kinetis MicrocontrollersのトピックLCD slowly turn brighter

LCD slowly turn brighter

Re: LCD slowly turn brighter