Does Serial.write() bock until the byte is written out of the Arduino? If so, is there a non-blocking approach? Also, if it does block, can an ISR execute while waiting for the Serial.write to complete?

Does Serial.write() block

sthudium November 4, 2017, 8:48am 5

Can the Serial.AvailableForWrite() function be used to determine whether output buffer is not full? And does that function block for any reason?

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