do not move the cursor relative to an existing position. if you once =
have a positioning error, you'll keep it forever.
set the cursor absolutely to the new position (is even faster) and =
overwrite.
the first position of line #2 is usually absolute position 40.
tino


>-----Original Message-----
>From: Cherry, Mark [mailto:MCherry@NTCOLLEGE.COM]
>Sent: Monday, January 26, 2004 6:47 PM
>To: PICLIST@MITVMA.MIT.EDU
>Subject: [PIC:] New to LCD's, Need assistance
>
>I am new to using LCD's.  I am currently interfacing, via 4 line =
interface,
>a 16f84a and LCD using the Hitachi 44780 controller, 2x16 =
configuration.
>
>I have most of the code working for display except one part.  That part
>will
>be the question to follow.
>
>The display will look like the following:
>
>Line one text is static
>Line two Prompt: _ _ _
>
>Where _ _ _ is variable numeric information, 3 positions.
>
>My code displays the line one static information and the line two =
prompt,
>positioning the cursor ready for the variable information.  Once I =
display
>the 3 char vari. Info., I am having a problem getting it back the four
>spaces to overwrite those characters with new information.
>
>I have tried to shift the cursor back three, that leaves the first
>character
>of previous info displaying.  Went back four then forward one, but have
>some
>glitch making that work.
>
>Any suggestions?  I probably missed, or misunderstood a command =
available
>with the controller, but not sure where or what.
>
>Thanks in advance for any assistance.
>
>Mark Cherry, WT6P
>Sacramento, CA
>
>---
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