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No member named 'printf' in 'TextLCD_I2C_N'

Wally76

Hi all, I am in the need to change display type (from HCMS2975 to 16x2 I2C LCD) in a project and I am facing problems with TextLCD library...

Apparently printf is not properly inherited from MbedOS:  No member named 'printf' in 'TextLCD_I2C_N'

I tried to update Mbed-os, but it cranks forever...

Any suggestion? 

BTW, I still have fake errors "Use of undeclared identifier 'strncat'".  

Thank you,

Walter

  • 0 Arm Employee Badge

    Hello Walter, sorry, I am not familiar with mbed-OS. But maybe you just need to add the right include files in your code:

    #include <stdio.h>
#include <string.h>

    so that the compiler knows the functions from the standard C runtime library.

  • +1 in reply to Andreas Barth

    Hi Andreas, thank you very much for your rely.

    All the #includes are already there: it was an old project running without problems in Mbed...

    Actually I discovered that creating a new blank project and importing the main and the required libraries, solved the problem...

    Walter