Paul Staron

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10 years, 4 months ago.

Can't initialise my i2c

Trying to initialise my eeprom interface using:

main.cpp

#include "mbed.h"
EEPROM rom(p9, p10, 0xA0, T24C32);

I get this error:

Error: Identifier "T24C32" is undefined in "main.cpp", Line: 10, Col: 27

This is part of the header file from the "EEPROM" library from "CODE" on Mbed:

eeprom.h

#include "mbed.h"
class EEPROM {
public:
    enum TypeEeprom {T24C01=128,T24C02=256,T24C04=512,T24C08=1024,T24C16=2048,
                     T24C32=4096,T24C64=8192,T24C128=16384,T24C256=32768,
                     T24C512=65536,T24C1024=131072,T24C1025=131073} type;
    
    /*
     * Constructor, initialize the eeprom on i2c interface.
     * @param sda : sda i2c pin (PinName)
     * @param scl : scl i2c pin (PinName)
     * @param address : eeprom address, according to eeprom type (uint8_t)
     * @param type : eeprom type (TypeEeprom) 
     * @return none
    */
    EEPROM(PinName sda, PinName scl, uint8_t address, TypeEeprom type);

Any suggestions?

Many thanks

Hello,

you have to identify with a class name it belongs to:

EEPROM rom(p9, p10, 0xA0, EEPROM::T24C32);

Otherwise, compiler looks at global scope and there's not any T24C32 symbol.

Regards,
0xc0170

posted by Martin Kojtal 10 Jan 2014

1 Answer

Paul Staron
poster
10 years, 4 months ago.

Thank you Martin, its now working, I have not come across this way before, normally just specify pin names.

Accepted Answer