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@ -26,21 +26,24 @@
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/** Amount of free RAM
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* \return The number of free bytes.
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*/
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#ifdef __arm__
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extern "C" char* sbrk(int incr);
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int SdFatUtil::FreeRam() {
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extern int __bss_end;
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extern int* __brkval;
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int free_memory;
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if (reinterpret_cast<int>(__brkval) == 0) {
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// if no heap use from end of bss section
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free_memory = reinterpret_cast<int>(&free_memory)
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- reinterpret_cast<int>(&__bss_end);
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} else {
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// use from top of stack to heap
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free_memory = reinterpret_cast<int>(&free_memory)
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- reinterpret_cast<int>(__brkval);
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}
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return free_memory;
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char top;
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return &top - reinterpret_cast<char*>(sbrk(0));
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}
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#else // __arm__
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extern char *__brkval;
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extern char __bss_end;
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/** Amount of free RAM
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* \return The number of free bytes.
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*/
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int SdFatUtil::FreeRam() {
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char top;
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return __brkval ? &top - __brkval : &top - &__bss_end;
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}
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#endif // __arm
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//------------------------------------------------------------------------------
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/** %Print a string in flash memory.
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*
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