How to wrie 16-bit data EEPROM 24c021

[amardeep]

Hi ..
 

I am using 24c02 EEPROM memory for data storage .

i am working on a project of counter. i use Unsigned int variable who value is increment and maximum value is 65535 
 

i need help or algorithm how to write this 16-bit value into EEPROM

[nikhiljain]

Break the data into two one byte numbers using masking and send one byte at a time to the eeprom. However in the logic of your program you have to convert the two bytes into one number.

[amardeep]

hi ..
 

 

by this way :

 

 

 

   unsigned int data,addtion,add ;

   unsigned char upper,lower;

 

/* write operation*/

   lower = data%100;  // lower byte

   upper = data/100;  // upper byte  

 

 

/* read operation*/

 

   addtion = lower;

   add = upper<<8;

   add = add | addtion;

   

   i write eeprom by this way …but when i perform read operation the value will changed ..
   but result is changed …
  for that what i have to do ..??  

[Author]

Posts