Lucas Fenoll Molina wrote:

> I4ve tried lots of differents addresses and still nothing happend
> with line
> 2 and 4
> shouldn4t the lcd at least show on this lines the squares that
> mean they are
> on?
> when I start the lcd line 1 and 3 are like this
> but the other two are dead
> Also I tried setting the bit that tells the lcd to be in 1 line mode or 2
> line mode....
> and eve when this bit is set to 0 this is 1 line mode still show
> the squares
> for line 1 and 3
> any thoughts for this?

Well, I had exactly the same problem recently. It turned out to be a bug in
my
initialization routine. Are you also using the device in 4-bit mode?
I was using a subroutine to split 8 bit commands in 2 nibbles that were sent
to
the LCD. But, during initialization, the LCD seems to expect only one 4 bit
command
at a time. Strange thing was, everything else worked fine. So if I had been
using
a 1 or 2 line display, I would never have found this error. By the way: the
LCD should
be put in 2 line mode. Hope this helps (if it doesn't, please post you init
code).

Happy coding, John.


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