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

[Royce Pereira]

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 I recently updated WinAVR to a newer version of the AVR-GCC toolchain,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