Hi, I'm new in embedded system,I've stm32f100rb and I want to display a string at an lcd named jhd162a 16x2, but when I test it, the lcd always display a black line,I test it with an empty board and it's the same problem, one black line. anyone have an idea please??? and thank you.
"I set the GPIO_Speed to 50 Mhz and it the same problem"
That has nothing to do with busy loops!
Did you follow the links?
sorry, but I can't understand what I have to do ??