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Add missing availableForWrite() virtual method #65

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Add missing availableForWrite() virtual method #65

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6 changes: 6 additions & 0 deletions src/arduino/Print.h
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Original file line number Diff line number Diff line change
Expand Up @@ -57,6 +57,12 @@ class Print
size_t write(const char *buffer, size_t size) {
return write((const uint8_t *)buffer, size);
}
// 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 &);
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