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Change initial value for free memory.

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Change initial value from 32767 (maximum value of a 16-bit signed integer) to __INT_MAX__ (compiler-defined maximum value for an int).
This commit is contained in:
Neil McKechnie 2021-03-09 23:41:33 +00:00
parent def6c24bac
commit eb54c78d74
2 changed files with 4 additions and 3 deletions
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2
CommandStation-EX.ino
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@ -124,7 +124,7 @@ void loop()
LCDDisplay::loop(); // ignored if LCD not in use LCDDisplay::loop(); // ignored if LCD not in use
// Report any decrease in memory (will automatically trigger on first call) // Report any decrease in memory (will automatically trigger on first call)
static int ramLowWatermark = 32767; // replaced on first loop static int ramLowWatermark = __INT_MAX__; // replaced on first loop
int freeNow = minimumFreeMemory(); int freeNow = minimumFreeMemory();
if (freeNow < ramLowWatermark) if (freeNow < ramLowWatermark)

3
freeMemory.cpp
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@ -32,7 +32,7 @@ extern char *__malloc_heap_start;
#endif #endif
static volatile int minimum_free_memory = 32767; static volatile int minimum_free_memory = __INT_MAX__;
static inline int freeMemory() { static inline int freeMemory() {
@ -52,6 +52,7 @@ static inline int freeMemory() {
// //
void updateMinimumFreeMemory(unsigned char extraBytes) { void updateMinimumFreeMemory(unsigned char extraBytes) {
int spare = freeMemory()-extraBytes; int spare = freeMemory()-extraBytes;
if (spare < 0) spare = 0;
if (spare < minimum_free_memory) minimum_free_memory = spare; if (spare < minimum_free_memory) minimum_free_memory = spare;
} }