PIC16F690 - 24LC08B: they won't talk...

[xnihilo]

"ep_address" instead of "eep_address" didn't generate an error because it is a paste error only. I selected the block starting from the 2nd chara of the line, so it is alright, the variable name is right.

I changed slightly the code:

eep_address VAR WORD
instead of BYTE

and:

I added:

ADCON0.0 = 0 'turn adcon off


Things I wanted to do:

- solder a 8 pins socket on a protoboard instead of breadboard and solder connexions
-> DONE

- use 2k wpu only on sda instead of a 4.7k wpu on each scl and sda
-> DONE, but I used 2K on each of the SCL and SDA pins

- swap with another pic16f690 in case the one i use is defect
-> DONE

- swap with another 24lc08b in case the one i use is defect
-> DONE

- try a huge pause 50 instead of pause 5 after the i2cwrite in case it is a timing problem
-> DONE

- declare the eeprom address variable as a word instead of as a byte
->DONE

- declare "eep_address" instead of "ep_address" (i wonder how i didn't see this typing error!)
-> DONE, no error there in fact

code is:

    'routine that checks if the external eeprom (the mag) is connected to the supplier
    'it writes than reads back the test value (33)
    checkwrite = 33
    eep_address = 0     'use storage byte 1 of 255 fo rthe test
    
    LCDOUT $fe,1,"CTRLbyte:",#eep_control
    PAUSE 2000
    
    I2CWRITE PORTC.6,PORTC.7,eep_control,eep_address,[checkwrite]    'store maxitem value in the mag external EEPROM
    PAUSE 50        'hadware dependent
    
    LCDOUT $FE,1,"Wrote:",#checkwrite,"@",#eep_address
    PAUSE 2000
    
    I2CREAD PORTC.6,PORTC.7,eep_control,eep_address,[checkwrite]    'store maxitem value in the mag external EEPROM
    
    LCDOUT $fe,1,"Read:",#checkwrite,"@",#eep_address
    PAUSE 2000
    
    IF (checkwrite != 33) then
        LCDOUT $fe,1,"couldn't write"
        PAUSE 4000
        checkwrite = 0
        GOTO endofroutine
    ENDIF
    checkwrite = 66

----------------------


RESULTS:

The output on LCD is:

"wrote:33@0"
"read:0@0"
"couldn'twrite"


So, back to the starting point but this time I have no idea what I could change.
Is it the wires length? Did I failed to set some registers? ...
I'm lost... And angry.
My circuit is useless if I can't write to external eeprom...