hassan ali
Member level 2
![Member level 2](/styles/images/ranks/dlevel2.gif)
hi , sorry for my English.....
i have already build my own firmware for interfacing serial eeprom with 8051 but am facing i problem and i can't know it , i made the HEX file but on simulation if i store (ex:#05h) the out put then after storing this reading inside the eeprom and read it again became wrong always the out put is (ex:0xff) i tried a lot of different serial eeprom with different codes but always facing this problem so i gues that the problem is not in firmware may be there is a header file i must add it in keil at programming
note: am using assembly code
and also there is a message form keil
*** WARNING L2: REFERENCE MADE TO UNRESOLVED EXTERNAL
i have already build my own firmware for interfacing serial eeprom with 8051 but am facing i problem and i can't know it , i made the HEX file but on simulation if i store (ex:#05h) the out put then after storing this reading inside the eeprom and read it again became wrong always the out put is (ex:0xff) i tried a lot of different serial eeprom with different codes but always facing this problem so i gues that the problem is not in firmware may be there is a header file i must add it in keil at programming
note: am using assembly code
and also there is a message form keil
*** WARNING L2: REFERENCE MADE TO UNRESOLVED EXTERNAL