Post by thread:How to move cursor without overwriting LCD display

Hi: I am trying to move the cursor on an LCD display using a 44780 controler chip. When the cursor moves it seems to be overwriting the display with it's location. How to move the corsor and NOT change the display? Thanks, Brooke

At 09:08 97/01/14 -0800, you wrote: >Hi: > >I am trying to move the cursor on an LCD display using a 44780 >controler chip. When the cursor moves it seems to be overwriting >the display with it's location. How to move the corsor and NOT >change the display? > >Thanks, >Brooke All you have to do is change the address of where the cursor has to be displayed. Peer. <><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><> Peer Ouwehand spam_OUTpouwehaTakeThisOuTiaehv.nl http://www.iaehv.nl/users/pouweha/ Wanna chat... try me on PowWow. Welcome my son, welcome to the machine. (Pink Floyd) ><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><><

Brooke wrote: > > Hi: > > I am trying to move the cursor on an LCD display using a 44780 >..... The answer is that the 44780 always either increments or decrements when the Display Data register ie EITHER read or written. So I set the Address Counter one higher than required, setup for decrement, and READ the DD ram. > Brooke

What code are you using to move the cursor ? If you are using 32 (space) try sending 20 as an instruction not a printable character. Brooke wrote: > > Hi: > > I am trying to move the cursor on an LCD display using a 44780 > controler chip. When the cursor moves it seems to be overwriting > the display with it's location. How to move the corsor and NOT > change the display? > > Thanks, > Brooke

Peer Ouwehand wrote: > > At 09:08 97/01/14 -0800, you wrote: > >Hi: > > > >I am trying to move the cursor on an LCD display using a 44780 > >controler chip....... > > All you have to do is change the address of where the cursor > has to be displayed. Peer: Correct. For some reason it didn't work the first time Thanks. Brooke