Re: [avr-gcc-list] String array in ROM gives error in spite of following example code.

[Royce Pereira]

Sorry, the 'word' type means 'unsigned integer'.

I have a header that defines 'word'. :-)

On Thu, Jun 12, 2014 at 4:08 PM, Royce Pereira <address@hidden> wrote:
> I found that this does not throw an error:
>
> const word pgtmp_msg[]    PROGMEM =
>    { ptmpUP_msg, ptmpDN_msg,  ptmpCLG_msg,} ;
>
> but it does give a warning:
>
> warning: initialization makes integer from pointer without a cast
> [enabled by default]
>   { ptmpUP_msg, ptmpDN_msg,  ptmpCLG_msg,};
>     ^
> Is there a proper way of doing this, now that the libc example too is
> inaccurate ?
>
> On Thu, Jun 12, 2014 at 4:04 PM, Royce Pereira <address@hidden> wrote:
>> Francois,
>>
>> No, that does not work.
>>
>> In fact, it was *exactly* what i was using before (which was not as
>> per the libc examples).
>>
>> But it gave a similar error, so i tried following the libc example exactly.
>>
>> But still no luck.
>>
>>
>> On Thu, Jun 12, 2014 at 3:59 PM, Francois Lorrain
>> <address@hidden> wrote:
>>> Hello,
>>>
>>> Newer version of gcc have changed the progmem behaviour, it cannot be
>>> applied to typedef anymore if I remember well.
>>>
>>> const char * pgtmp_msg[] should solve your issue
>>>
>>> Regards
>>>
>>> Francois
>>>
>>>
>>> On Thu, Jun 12, 2014 at 12:23 PM, Royce Pereira <address@hidden> wrote:
>>>>
>>>> Hi,
>>>>
>>>> I recently updated WinAVR to a newer version of the AVR-GCC toolchain,
>>>> downloaded from the Atmel site.
>>>>
>>>> My version is this:
>>>>
>>>> avr-gcc (AVR_8_bit_GNU_Toolchain_3.4.3_1072) 4.8.1
>>>>
>>>> My code was compiling without errors before, but with this version, it
>>>> is giving errors in spite of following the instructions in the faq
>>>> section of the avr-libc document.
>>>> //---------------------------------------------
>>>> #include <avr/io.h>
>>>> #include <avr/pgmspace.h>
>>>>
>>>> const char ptmpUP_msg[]      PROGMEM = "Upper Temp" ;
>>>> const char ptmpDN_msg[]      PROGMEM = "Lower Temp" ;
>>>> const char ptmpCLG_msg[]     PROGMEM = "Chiller Temp" ;
>>>>
>>>> PGM_P  pgtmp_msg[]    PROGMEM =
>>>>    { ptmpUP_msg, ptmpDN_msg,  ptmpCLG_msg,} ;
>>>>
>>>> //------------------------------------------------------
>>>> The above code gives the following error:
>>>>
>>>> error: variable 'pgtmp_msg' must be const in order to be put into
>>>> read-only section by means of  '__attribute__((progmem))'
>>>> //-----------------------------------------------------
>>>>
>>>> But I have followed the avr-libc example exactly.
>>>> So why is this error thrown and whats the correct way to do this ?
>>>>
>>>> Thank You.
>>>> --
>>>> Best Regards,
>>>>
>>>> -- Royce Pereira
>>>>
>>>> _______________________________________________
>>>> AVR-GCC-list mailing list
>>>> address@hidden
>>>> https://lists.nongnu.org/mailman/listinfo/avr-gcc-list
>>>
>>>
>>
>>
>>
>> --
>> Best Regards,
>>
>> -- Royce Pereira
>
>
>
> --
> Best Regards,
>
> -- Royce Pereira



-- 
Best Regards,

-- Royce Pereira