sram-free
wayland/memory-free/sram-free
Measure free Static Random Access Memory (SRAM).
sram-free
@/sram-free
Measure free Static Random Access Memory (SRAM).
UPDpulse
Update. Trigger measurement of free SRAM.
SRAMnumber
Available SRAM in bytes.
C++ implementation
// Source: https://github.com/mpflaga/Arduino-MemoryFree
#ifdef __arm__
// should use uinstd.h to define sbrk but Due causes a conflict
extern "C" char* sbrk(int incr);
#else // __ARM__
extern char *__brkval;
#endif // __arm__
int freeMemory() {
char top;
#ifdef __arm__
return &top - reinterpret_cast<char*>(sbrk(0));
#elif defined(CORE_TEENSY) || (ARDUINO > 103 && ARDUINO != 151)
return &top - __brkval;
#else // __arm__
return __brkval ? &top - __brkval : &top - __malloc_heap_start;
#endif // __arm__
}
node {
void evaluate(Context ctx) {
if (isInputDirty<input_UPD>(ctx)) {
emitValue<output_SRAM>(ctx, freeMemory());
}
}
}