speeduino/speeduino/board_avr2560.ino

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#include "globals.h"
#if defined(CORE_AVR)
void initBoard()
{
}
uint16_t freeRam()
{
extern int __heap_start, *__brkval;
uint16_t v;
return (uint16_t) &v - (__brkval == 0 ? (int) &__heap_start : (int) __brkval);
}
#endif