mirror of
https://github.com/PotentiaRobotics/engine-software.git
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79 lines
1.9 KiB
C++
79 lines
1.9 KiB
C++
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//Slave Arduino Code:
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//SPI SLAVE (ARDUINO)
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//SPI COMMUNICATION BETWEEN TWO ARDUINO
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//CIRCUIT DIGEST
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//Pramoth.T
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#include<SPI.h>
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#define LEDpin 7
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#define buttonpin 2
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volatile boolean received;
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volatile byte Slavereceived,Slavesend;
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int buttonvalue;
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int x = 5;
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void setup()
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{
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Serial.begin(115200);
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pinMode(buttonpin,INPUT); // Setting pin 2 as INPUT
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pinMode(LEDpin,OUTPUT); // Setting pin 7 as OUTPUT
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pinMode(MISO,OUTPUT); //Sets MISO as OUTPUT (Have to Send data to Master IN
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SPCR |= _BV(SPE); //Turn on SPI in Slave Mode
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received = false;
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SPI.attachInterrupt(); //Interuupt ON is set for SPI commnucation
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}
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ISR (SPI_STC_vect) //Inerrrput routine function
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{
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Slavereceived = SPDR; // Value received from master if store in variable slavereceived
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received = true; //Sets received as True
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}
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void loop()
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{ if(received) //Logic to SET LED ON OR OFF depending upon the value recerived from master
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{
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if (Slavereceived==8)
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{
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x+=1;
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/*
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digitalWrite(LEDpin,HIGH); //Sets pin 7 as HIGH LED ON
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Serial.println("Slave LED ON");
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}else
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{
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digitalWrite(LEDpin,LOW); //Sets pin 7 as LOW LED OFF
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Serial.println("Slave LED OFF");
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}
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buttonvalue = digitalRead(buttonpin); // Reads the status of the pin 2
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if (buttonvalue == HIGH) //Logic to set the value of x to send to master
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{
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x=1;
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}else
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{
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x=0;*/
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}
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if(x == 10){x = 0;}
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Slavesend=x;
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SPDR = Slavesend;
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SPDR = x;//Sends the x value to master via SPDR
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Serial.println(SPDR);
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Serial.println(Slavesend);
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delay(500);
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}
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}
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