18 lines
832 B
Arduino
18 lines
832 B
Arduino
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// this function will return the number of bytes currently free in RAM
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int memoryTest() {
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int byteCounter = 0; // initialize a counter
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byte *byteArray; // create a pointer to a byte array
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// More on pointers here: http://en.wikipedia.org/wiki/Pointer#C_pointers
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// use the malloc function to repeatedly attempt allocating a certain number of bytes to memory
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// More on malloc here: http://en.wikipedia.org/wiki/Malloc
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while ( (byteArray = (byte*) malloc (byteCounter * sizeof(byte))) != NULL ) {
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byteCounter++; // if allocation was successful, then up the count for the next try
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free(byteArray); // free memory after allocating it
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}
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free(byteArray); // also free memory after the function finishes
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return byteCounter; // send back the highest number of bytes successfully allocated
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}
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