AT89S51 + AT24C01A

In my routines, i am not checking for ack! i am assuming that the data transfer is perfect and ack is received. thats the reason, it cannot be used for EEPROM.
but my C routines can be used for EEPROM and any I2C device.

RLC A instruction means "rotate left through carry"
whatever is there in A is rotated left and the MSB is copied back to the place of LSB and all bits are shifted by 1 toward left. a... Read Compelte post
Other Tags: msb   eeprom   rlc   ack   c routines   
Posted by ajay_bhargav on Sat Apr 21 2007, 05:54 PM

I2C library

Hello friends,
i2c library for TWI communication, implemented for use in single master multislave configuration, for controllers like AT89C51/52/2051/4051 ... which dont have onship I2C but now can communicate using this small library.

the code size required for this is just 99Bytes, wont cost you much, but can help you in so many ways. you can use it for I2C RTC, I2C LCD, I2C based EEPROM etc. so w... Read Compelte post
Other Tags: small library   lcd i2c   hello friends   at89c51   eeprom   
Posted on Mon Dec 19 2005, 06:09 PM

Conversation

ExperimenterUK
Sun Oct 13 2019, 12:23 AM
Log in.. then post your code in the 8051 forum
Sat Oct 12 2019, 12:18 PM
Bhadra Sajikumar
i am doing a countdown timer with 8051 for my project, unfortunately our professor had to take a leave of absence before he could teach us most of it.. can someone explain the .asm code of it for me?
Mon Sep 23 2019, 09:37 AM
Nathaniel
I am doing a project for my schools wireless security system with cameras,sensors and spot lights using 8051 micro controller, could you help me out with the design and its source code.
Wed Sep 18 2019, 10:48 PM
Caryn Kover
Thank you for your time,
ExperimenterUK
Mon Aug 05 2019, 09:09 PM
@Ismail ..post in forum, give details
Mon Aug 05 2019, 06:33 PM
Ismail balghmi
Hello. Please I won't download
ExperimenterUK
Wed Jul 24 2019, 02:47 AM
@BUSTER123 Please post in the forum
Tue Jul 23 2019, 08:13 PM
BUSTER123
hello! newbie here. i am kind of a guy who hates using ready - made existing libraries, so this helped a lot as i was trying to control and write to a character lcd display. however, i can't figure out how to set the cursor position. for example, i want to set it to the 5th column in the first row, so position 5. so according to the table, i am sending 10000101 on the 8 data lines of the lcd (register select pulled low). the cursor does not move there however. and i cant move the cursor left or right too. is it something wrong that i am doing? thank you.
ExperimenterUK
Thu Jul 11 2019, 09:55 PM
@ramos https://www.theengineeringprojects.com/2017/09/l298-motor-driver-library-proteus.html
ExperimenterUK
Thu Jul 11 2019, 09:44 PM
@praveen123. Can you give a link to the project ?

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DeepakBGattani
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Jeanbusatta Avatar
Posted By Jeanbusatta
Sun Nov 10 2019, 04:43 AM
ty, really needed it
ExperimenterUK Avatar
Posted By ExperimenterUK
Tue Oct 22 2019, 05:18 AM
wimac Avatar
Posted By wimac
Mon Oct 21 2019, 09:18 AM
I’ve been following this thread and looking at the...
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Posted By [email protected]
Sun Oct 20 2019, 03:09 PM
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Posted By [email protected]
Sun Oct 20 2019, 03:02 PM
sir, when i on display ,sometime 3rd display is no...
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Posted By [email protected]
Sun Oct 20 2019, 02:53 PM
sir, when i on display ,sometime 3rd display is no...
ExperimenterUK Avatar
Posted By ExperimenterUK
Sun Oct 20 2019, 12:21 AM
Your code seems okay on my simulationTry my code o...
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Posted By [email protected]
Sat Oct 19 2019, 07:13 PM
please find video attachment. 3rd & 4th displa...
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Posted By [email protected]
Sat Oct 19 2019, 07:05 PM
sir, 3rd and 4th dot matrix display flickering, ...
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Posted By ExperimenterUK
Fri Oct 18 2019, 09:18 PM
Hopefully you understand some of the program.Which...