8051 programs lcd interfacing

The "Get LCD Status" command will return to us two tidbits of information; the information that is useful to us right now is found in DB7. At that point we are free to continue and send the next command. Since we will use this code every time we send an instruction to the LCD, it is useful to make it a subroutine. Let's write the code:. JB ACC. This will assure that our program gives the LCD the time it needs to execute instructions and also makes our program compatible with any LCD, regardless of how fast or slow it is.

Programming Tips : The above routines does the job of waiting for the LCD, but were it to be used in a real application a very definite improvement would need to be made: as written, if the LCD never becomes "not busy" the program will effectively "hang," waiting for DB7 to go low. A free course on digital electronics and digital logic design for engineers. Everything is taught from the basics in an easy to understand manner.

A free course on Microprocessors. Start from the basic concepts related to the working of general microprocessors and work upto coding the and If you have ever thought of making an electronic project but didn't know where to start, this free Arduino course will be perfect for you.

This site uses Akismet to reduce spam. Learn how your comment data is processed. If your project requires a lot of peripherals to be connected to the same microcontroller, then we would require a large number of ports. In this scenario, you can smartly utilize the existing ports to send more data with fewer numbers of data lines. Function msdelay has been created to create delay in milliseconds and called frequently in the program, it is called so that LCD module can have sufficient time to execute the internal operation and commands.

Please refer this: Getting Started with Microcontroller. Check your circuit connections again. Agree with you harish kumar If you got the solution kindly share with us. Thanku for ur explanation and code. Can u tell me how to store multiple strings into LCD? Hello circuit digest! The above video shows lcd interface on bread board Can this project be shown on general purpose board???

Also on pcb??? Very useful article. Enter your email address to subscribe to this blog and receive notifications of new posts by email. Email Address. Thanks for the invaluable information. But I have a question for you, how much second is the delay given by delay and delay ?

Notify me of follow-up comments by email. Notify me of new posts by email. Table of Contents. Subscribe to Blog via Email Enter your email address to subscribe to this blog and receive notifications of new posts by email. Thanks in advance for your feedback! Loading Comments