Hello all.
I'm facing a little problem in my C code.
I’m writing a user interface to an LCD with the AT89C52 micro. The user interface includes a menu of several lines. The user browses these lines by scroll up/down keys. My problem is that I want to blink the current line until scroll up/down key is pressed again. I wrote a function that receives the line number to blink and a blink flag. When the blink flag is set (‘1’) the line will blink, otherwise – not.
The problem is that when this function receives blink_flag=SET he enter to an endless loop and pressing on scroll up/down keys not help.

Please advice.