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1. 

   trunet
   Member

   Hi,

   In your documentation it's written:
   "If you’re looking for something from the C standard library (like atoi(), for instance): the CodeSourcery GCC compiler used to compile your programs is configured to link against newlib, and allows the use of any of its header files. However, dynamic memory allocation (malloc(), etc.) is not available."

   I'm migrating some arduino libraries(spieeprom, XBee and DB that'll use an SPI EEPROM) to maple and I'd like to know why malloc/free is not "implemented" on maple.

   Thanks,

   Wagner Sartori Junior

   Posted 4 years ago #
2. 

   kqr2
   Member

   Based on a prior thread, malloc() should work. Just be sure to include <stdlib.h>

   http://forums.leaflabs.com/topic.php?id=760

   Posted 4 years ago #
3. 

   poslathian
   LeafLabs

   wow, would love to keep track of the progress on all those ports! stdlib.h should work for you, let us know how it plays out.

   Posted 4 years ago #
4. 

   trunet
   Member

   I'm getting this on my class.

   In file included from libraries/DB/DB.h:25,
   from libraries/DB/DB.cpp:22:
   /home/trunet/src/libmaple/arm/bin/../lib/gcc/arm-none-eabi/4.4.1/../../../../arm-none-eabi/include/stdlib.h:72: error: expected unqualified-id before 'int'
   /home/trunet/src/libmaple/arm/bin/../lib/gcc/arm-none-eabi/4.4.1/../../../../arm-none-eabi/include/stdlib.h:72: error: expected ')' before 'int'
   /home/trunet/src/libmaple/arm/bin/../lib/gcc/arm-none-eabi/4.4.1/../../../../arm-none-eabi/include/stdlib.h:72: error: expected ')' before 'int'
   /home/trunet/src/libmaple/arm/bin/../lib/gcc/arm-none-eabi/4.4.1/../../../../arm-none-eabi/include/stdlib.h:72: error: expected ')' before 'int'
   make: *** [build/./libraries/DB/DB.o] Error 1

   Posted 4 years ago #
5. 

   trunet
   Member

   I forget to say that I declared my malloc variable as static too and it just does not compile:

   boolean DB::deleteRec(byte recno)
   {
   DB_error = DB_OK;
   if (recno<0 || recno>DB_head.n_recs)
   { //Serial.println("recno out of range");
   DB_error = DB_RECNO_OUT_OF_RANGE;
   return false;
   }
   static DB_Rec rec = (byte*)malloc(DB_head.rec_size);
   for (int i=recno+1; i<=DB_head.n_recs; i++)
   {
   read(i,rec);
   write(i-1,rec);
   }
   free(rec);
   DB_head.n_recs--;
   disk1.write(DB_head_ptr,DB_head.n_recs);
   return true;
   }

   Posted 4 years ago #
6. 

   trunet
   Member

   forget it, it just works putting <stdlib.h> on top of my include files. even without static declaration.

   I think you can remove that declaration from documentation.

   thanks,

   Wagner Sartori Junior

   Posted 4 years ago #

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