RAM

Waspmote's microcontroller includes an 8 kB SRAM which is shared between initialized and uninitialized variables, the dynamic memory allocator, and the stack that is used for calling subroutines and storing local variables.

• It is a good practice to delete variables which have already been used. This will avoid confusion, like "is this old or new?".

• Also, once a vector has been used, it is good to delete all the fields in this vector, by writing 0's or voids, for example.

• Avoid using strings so as to save memory. When printing debug messages use the Flash memory to allocate those messages:

USB.println("This is a message");    //WRONG

USB.println(F("This is a message"));    //OK

• Avoid using dynamic memory allocation in order to prevent memory fragmentation. It is preferable to use controlled static variables.

• It is possible to get the free memory by calling the function freeMemory:

USB.print(F("Free Memory:"));
USB.println(freeMemory());