[En-Nut-Discussion] Putting strings etc transparent into PROGMEM
Uwe Bonnes
bon at elektron.ikp.physik.tu-darmstadt.de
Fri Oct 23 12:55:42 CEST 2009
>>>>> "Harald" == Harald Kipp <harald.kipp at egnite.de> writes:
Harald> Hi Uwe, Uwe Bonnes wrote:
>> +#ifdef PROGMEM +static CONST char os_version_string[] PROGMEM +#else
>> +static CONST char os_version_string[] +#endif + = "4.9.7.0";
Harald> The #ifs are not required, because non-Harvard architectures
Harald> provide a PROGMEM dummy.
>> Would this be transparent for a usage like ./nut/pro/httpd.c:
>> fprintf_P(stream, fmt_P, HTTP_MAJOR_VERSION, HTTP_MINOR_VERSION,
>> status, title, NutVersionString());
Harald> It would be incompatible, because %P is required instead of
Harald> %s. This would break a large number of applications, just to
Harald> save 8 bytes of RAM.
Do non-Harvard architectures provide a dummy %P?
--
Uwe Bonnes bon at elektron.ikp.physik.tu-darmstadt.de
Institut fuer Kernphysik Schlossgartenstrasse 9 64289 Darmstadt
--------- Tel. 06151 162516 -------- Fax. 06151 164321 ----------
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