Half duplex support #4377
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Half duplex support #4377
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sandeepmistry
added
the
Library: SoftwareSerial
facchinm
pushed a commit
to arduino/ArduinoCore-avr
that referenced
this pull request
Nov 13, 2017
Squash and rebase of arduino/Arduino#4377
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It's been 4 years, I hope someone else can pick this up. |
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Adds a parameter to the Software Serial library to enable a half-duplex mode. This allows using 1 line for RX and TX.
It does this by setting the transmit pin by default to input, with the pull-up set. When transmitting, the pin temporarily switches to an output until the byte is sent, then flips back to input. When a module
is receiving it should not be able to transmit, and vice-versa.
Based on the following fork: https://github.com/nickstedman/SoftwareSerialWithHalfDuplex