When initializing the LCD, the backlight automatically goes of

[Ravi Sharma]

Hi All,

I am using the STM32F103C8?T6 board with I2C PCF8574 with 16x2 1602LCD.

When I am initializing the LCD the the backlight automatically goes of.

I have tried many times. but result is same.

Please advise

[Tesla DeLorean · Accepted solution]

Doing something wrong then. You might want to use a logic analyzer to review what signalling you're achieving, or interface on another micro-controller directly to GPIO pins to achieve a better understanding or how to control the display.

You might want to consider the use of an I2C OLED 128x64 or 128x32, they are easy to interface and cheap, and less 1990's

[Ravi Sharma]

Thank you for your help Clive.

Now the problem has resolve.

[T J]

please mark as answered or finished...