Where ya been, Wagner ?


On Sunday, May 16, 1999 9:49 AM, Wagner Lipnharski [SMTP:wagnerl@EARTHLINK.NET]
wrote:
> When you apply power to pins 1 + 2, polarization voltage to pin 3 on a
> 4xN LCD, the first and third lines comes up in black characters since it
> is "power up preset" to one line mode, so the first line is on (remember
> that the first line is broke in two and it extends as the "third"
> line).  If your PIC can't change that, it means that your device is
> unable to reprogram the unit to 2 lines.  If you don't have an
> osciloscope to debug it, just insert delays of 1 minute or more between
> data sent to the LCD, so you could measure the state of the lines using
> a simple voltmeter.  Just measure all the 14 lines after each change,
> make a map and compare to what it should be.
>
> Wagner Lipnharski