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STM8L152 display gone randomly

Question asked by gundogdu.batuhan on May 30, 2011
I am using stm8l152 for driving custom lcd.I have good results but sometimes I cant get any image.MCU is working but can not drive lcd.

I realised that Start of frame bit wasnt set when no display on lcd.It is hardware flag and should be set by hardware at the end of frames in lcd signals.

Any ideas?