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

shshistiem
Thu Sep 13 2018, 04:28 AM
hii!! some1 please let me know how i ll get rfid code to 8051 by WEIGAND mode
DrNossberg
Wed Sep 12 2018, 01:39 AM
is there anyone here?
Mon Aug 27 2018, 01:00 PM
bun
Hello everyone´╝ü
Sat Jul 21 2018, 11:51 AM
Dibakar Bhanja Chowdhury
By using a 555 timer how can I expand the range of the mobile phone jammer? Please reply me asap
Sun May 20 2018, 03:31 PM
justinb
how to write and execute a program that read the keypad button and display the number on 7 segment on intel8051 at89s52 in assembly language?
Thu May 17 2018, 12:06 PM
HAMZA TAJ
sir iwant to ask about controller of three phase supply by using back to back thyristor instead of triac....will u give me some guideline?
Sat Apr 28 2018, 06:24 PM
ashutosh jain
IR Remote Switch using TV remote (RC5 Protocol) is not working properly. opp1 & opp2 is in problem.plz help
ExperimenterUK
Sat Apr 28 2018, 01:39 AM
@kaiserslautern Post in forum
Wed Apr 25 2018, 12:39 PM
kaiserslautern
Hello everyone, using software uart is a very good idea for a second serial port. Thank you so much. I would kindly like to know how to connect this port to the PC?
ExperimenterUK
Sun Apr 22 2018, 01:20 AM
This is a community site. Feel free to help anyone needing advice

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PCBindex
Fri Sep 14 2018, 02:45 AM
sirkit
Thu Sep 13 2018, 04:46 AM
shshistiem
Wed Sep 12 2018, 10:36 PM
DrNossberg
Tue Sep 11 2018, 03:25 PM
ranjanvh
Thu Sep 06 2018, 02:28 PM
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Tue Sep 04 2018, 06:15 PM
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Sun Sep 02 2018, 02:20 PM
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Fri Aug 31 2018, 08:26 AM

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ExperimenterUK Avatar
Posted By ExperimenterUK
Thu Sep 13 2018, 08:39 PM
First of all, by reading your reply, I abandoned m...
DrNossberg Avatar
Posted By DrNossberg
Thu Sep 13 2018, 03:49 PM
Hi, thanks you for your reply ^^ First of all, by ...
ExperimenterUK Avatar
Posted By ExperimenterUK
Wed Sep 12 2018, 12:12 AM
HiThere are several issues here.The original 8051 ...
DrNossberg Avatar
Posted By DrNossberg
Tue Sep 11 2018, 08:08 PM
Hello everybody!First of all let me explain some s...
ExperimenterUK Avatar
Posted By ExperimenterUK
Fri Sep 07 2018, 05:08 AM
The compiler thinks the micro doesn't have enough...
Sudhansudeep Avatar
Posted By Sudhansudeep
Fri Sep 07 2018, 02:59 AM
this is the build output message
Sudhansudeep Avatar
Posted By Sudhansudeep
Fri Sep 07 2018, 01:38 AM
Change the mobile number as [number removed] in t...
ExperimenterUK Avatar
Posted By ExperimenterUK
Thu Sep 06 2018, 08:56 PM
I don't know what the problem is, I get no errors....
Sudhansudeep Avatar
Posted By Sudhansudeep
Thu Sep 06 2018, 01:12 PM
the code is Attachment ...
Sudhansudeep Avatar
Posted By Sudhansudeep
Thu Sep 06 2018, 12:48 PM
the code is same as u sent me for 16 chars