SerialPassthrough

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1/*
2
3  SerialPassthrough sketch
4
5  Some boards, like the Arduino 101, the MKR1000, Zero, or the Micro, have one
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7  hardware serial port attached to Digital pins 0-1, and a separate USB serial
8
9  port attached to the IDE Serial Monitor. This means that the "serial
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11  passthrough" which is possible with the Arduino UNO (commonly used to interact
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13  with devices/shields that require configuration via serial AT commands) will
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15  not work by default.
16
17  This sketch allows you to emulate the serial passthrough behaviour. Any text
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19  you type in the IDE Serial monitor will be written out to the serial port on
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21  Digital pins 0 and 1, and vice-versa.
22
23  On the 101, MKR1000, Zero, and Micro, "Serial" refers to the USB Serial port
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25  attached to the Serial Monitor, and "Serial1" refers to the hardware serial
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27  port attached to pins 0 and 1. This sketch will emulate Serial passthrough
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29  using those two Serial ports on the boards mentioned above, but you can change
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31  these names to connect any two serial ports on a board that has multiple ports.
32
33  created 23 May 2016
34
35  by Erik Nyquist
36
37*/
38
39void setup() {
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41  Serial.begin(9600);
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43  Serial1.begin(9600);
44}
45
46void loop() {
47
48  if (Serial.available()) {      // If anything comes in Serial (USB),
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50    Serial1.write(Serial.read());   // read it and send it out Serial1 (pins 0 & 1)
51
52  }
53
54  if (Serial1.available()) {     // If anything comes in Serial1 (pins 0 & 1)
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56    Serial.write(Serial1.read());   // read it and send it out Serial (USB)
57
58  }
59}