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i2c routine

kppp kpp

-i am interfacing the 8051 with the 24c64
-in that some values are manually written to eeprom and some are stored using program
-i am accessing the location 195th to (195+60)-range
which is not used before
-i am using a buffer to store the values i.e. required location to buffer and from buffer to eeprom
-this is stored properly because i am debuging it and i am getting corret
-but when i am trying to read from the eeprom eg-reset the software (eeprom is read at the power on)
my values not stored
-are they changing anywhere????
-if so then how to debug those areas

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  • 0 in reply to Andy Neil

    hi
    i changed the location of storing my value and now i m getting the saved value at the power on i.e. at power reset
    i also tried with my another storing routine which was working fine
    i changed the location (which i was getting wrong) in my working code and there also i got the same error of location
    so i changed the position of storing, this was about my 1st location problem
    -one more thing i noticed with my 2nd one location that my working routine was working well with that location but my new routine wasn't
    -so i shifted that to some other location and now my new routine is also working
    -means: 170 to 190 my data1 was stored. From 191 to 211 data2 was stored but it used to give me the wrong value at 191to194 so i shifted the whole data2 at 201 to 221 and now my new code is also working can u explain me this problem???????????????

Reply
  • 0 in reply to Andy Neil

    hi
    i changed the location of storing my value and now i m getting the saved value at the power on i.e. at power reset
    i also tried with my another storing routine which was working fine
    i changed the location (which i was getting wrong) in my working code and there also i got the same error of location
    so i changed the position of storing, this was about my 1st location problem
    -one more thing i noticed with my 2nd one location that my working routine was working well with that location but my new routine wasn't
    -so i shifted that to some other location and now my new routine is also working
    -means: 170 to 190 my data1 was stored. From 191 to 211 data2 was stored but it used to give me the wrong value at 191to194 so i shifted the whole data2 at 201 to 221 and now my new code is also working can u explain me this problem???????????????

Children
  • 0 in reply to kppp kpp

    and i hav checked that there was no overlapping or data overwritten in the location 191

  • 0 in reply to kppp kpp

    i changed the location of storing my value and now i m getting the saved value at the power on i.e. at power reset
    fuzzy, fuzzy, fuzzy

    Try, say, 8 locations spread across the capacity of the EEPROM and post which works and which fails.

    Since you are using a SILabs derivative (not deviate) you can find working code using the CodeArchitect, free from http://www.esacademy.com. Modifying CodeArchitect code to SILabs only takes a few minutes and you may just, in that code, find what your problem is.

    Erik

    SILabs derivatives: F0x, f1x, f2x
    SILabs deviates: F3x - up