how to read data from 2*16 lcd

Status
Not open for further replies.
A

alaaalkhfagi

Newbie level 3
Joined
Jun 21, 2012
Messages
3
Helped
0
Reputation
0
Reaction score
0
Trophy points
1,281
Visit site
Activity points
1,303
hi all,i hav displayed a msg on 2*16 lcd...but now i want to read the data from lcd and sent this to atmega16 for further processing...how to do it
"i am new to microcontrollers so please answer me in details"
 

If you have written a message, then the microcontroller knows what it sent to the LCD display. Why not store that in a variable?
LCDs are generally 1-way - they don't let you read the content, any more than a printer can read the printed sheet.
When you send a document to a printer, Microsoft Word still remembers what it sent to the printer. It doesn't try to read the printed paper!
(More complex LCDs have read capability but I doubt you're using that kind of LCD).
 

You can read from a LCD. There is a R/W bit, in other words if you can already write to your
LCD just change this bit and then you could read from the LCD.

The best advice when dealing with a LCD is: study the datasheet and make sure your
start-up and R/W timing sequences is greater or equal to the specified time.
 

Status
Not open for further replies.

Similar threads

Menu
Log in
Register
Cookies are required to use this site. You must accept them to continue using the site. Learn more…