85 lines
2.4 KiB
Plaintext
85 lines
2.4 KiB
Plaintext
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/*This is an example of the EasyTransfer Library 2way communications.
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The sketch is for the Arduino with a potentiometer attached to analog pin 0.
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This other Arduino has the servo attached to pin 9.
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Both have a putton attached to pin 12 and output a status using the LED on pin 13.
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The idea is each arduino will read the status of the button attached to it, and send it
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to the other Arduino, which will toggle it's LED based on the others button. The button
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should connect pin 12 to ground when pushed.
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And the Arduino with the potentiometer will send it's value to the one with the servo.
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The servo will move to the position based on the potentiometer.
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*/
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#include <EasyTransfer.h>
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//create two objects
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EasyTransfer ETin, ETout;
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struct RECEIVE_DATA_STRUCTURE{
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//put your variable definitions here for the data you want to receive
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//THIS MUST BE EXACTLY THE SAME ON THE OTHER ARDUINO
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int16_t buttonstate;
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};
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struct SEND_DATA_STRUCTURE{
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//put your variable definitions here for the data you want to receive
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//THIS MUST BE EXACTLY THE SAME ON THE OTHER ARDUINO
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int16_t buttonstate;
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int16_t servoval;
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};
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//give a name to the group of data
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RECEIVE_DATA_STRUCTURE rxdata;
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SEND_DATA_STRUCTURE txdata;
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void setup(){
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Serial.begin(9600);
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//start the library, pass in the data details and the name of the serial port. Can be Serial, Serial1, Serial2, etc.
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ETin.begin(details(rxdata), &Serial);
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ETout.begin(details(txdata), &Serial);
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pinMode(13, OUTPUT);
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//enable pull-up
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pinMode(12, INPUT_PULLUP);
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}
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void loop(){
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//first, lets read our potentiometer and button and store it in our data structure
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txdata.servoval = analogRead(0);
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if(!digitalRead(12))
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txdata.buttonstate = HIGH;
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else
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txdata.buttonstate = LOW;
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//then we will go ahead and send that data out
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ETout.sendData();
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//there's a loop here so that we run the recieve function more often then the
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//transmit function. This is important due to the slight differences in
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//the clock speed of different Arduinos. If we didn't do this, messages
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//would build up in the buffer and appear to cause a delay.
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for(int i=0; i<5; i++){
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//remember, you could use an if() here to check for new data, this time it's not needed.
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ETin.receiveData();
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//set our LED on or off based on what we received from the other Arduino
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digitalWrite(13, rxdata.buttonstate);
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//delay
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delay(10);
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}
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//delay for good measure
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delay(10);
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}
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