scrolling text input? for pic18f4520 with 2x16 lcd

[Demon]

This is totally off the top of my head, no code:

Use an array with 1 element for each character on display.
- if 4 characters, then use 4 elements starting at 0.

Store the position of each character in the array.
- character 1 starts at 0 on startup, so array(0)=1.

Use a lookup table to display each character.

Lcdout (clear screen)
For element = 0 To 3 (if using 4 characters)
Lookup array(element),[0,1,2,3,4,5,6,7,8,9,A,B,C],byteout
Lcdout byteout at next position on display
Next element

-syntax must be corrected.
- never used lookup so not sure if it starts at 0 or 1.
- I remember concatenating characters on the same LCD line, somewhere.

Ok Art, now it's your turn.

Robert

[Art]

Well since I was invited it's either what you said, or look up from on-chip eeprom if all lookup tables are going to end up the same.

Much nicer if it was just numeric values, and you could just increment/decrement each byte with the up/down button pushes.

After that first attempt, I'm not going to code it without a test circuit here...

[alamakazam]

cool, I just need some hints on the algorithm , or rather a better way of writing...

shouldn't have any problem writing the code myself

thanks again, lets hope my weekend will be fruitful

[Art]

Actually if it's just "0,1,2,3,4,5,6,7,8,9,A,B,C"
You should still just increment or decrement the values and use LCDOUT outputting the hex byte values.
That string is still sequential when expressed in hex format. Just a value from 0 to 12.


.

[alamakazam]

I am going to do this

hexadecimal increment/decrement from 0 to C

position 1 to 4

store the position 1-4 to a temp location

all 4 temp location , combine into a string

eg

going to input A123 memory