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SoftwareSerial stopListening at the begining #1269

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Merged
fpistm merged 1 commit into from
Jan 4, 2021
Merged

SoftwareSerial stopListening at the begining #1269

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4 changes: 3 additions & 1 deletion libraries/SoftwareSerial/src/SoftwareSerial.cpp
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Original file line number Diff line number Diff line change
Expand Up @@ -148,7 +148,9 @@ bool SoftwareSerial::listen()
if (active_listener != this) {
// wait for any transmit to complete as we may change speed
while (active_out);
active_listener->stopListening();
if (active_listener != nullptr) {
active_listener->stopListening();
}
rx_tick_cnt = 1; // 1 : next interrupt will decrease rx_tick_cnt to 0 which means RX pin level will be considered.
rx_bit_cnt = -1; // rx_bit_cnt = -1 : waiting for start bit
setSpeed(_speed);
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