availableForWrite (#4664)

added availableForWrite to Print.h to make compatible with Arduino Print.h
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drmpf 2021-01-11 20:43:10 +11:00 committed by GitHub
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commit 15db297130
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@ -73,6 +73,11 @@ public:
}
size_t printf(const char * format, ...) __attribute__ ((format (printf, 2, 3)));
// add availableForWrite to make compatible with Arduino Print.h
// default to zero, meaning "a single write may block"
// should be overriden by subclasses with buffering
virtual int availableForWrite() { return 0; }
size_t print(const __FlashStringHelper *);
size_t print(const String &);
size_t print(const char[]);