From caf93bb566223dd05d17a17b41b10611736f6472 Mon Sep 17 00:00:00 2001
From: FluffyCube9343 <learningninja007@gmail.com>
Date: Sun, 20 Feb 2022 16:12:16 -0500
Subject: [PATCH] spi is working
---
communication/SPI/v0.2_M_SPI/M_SPI.ino | 37 ++++++++++++
communication/SPI/v0.2_S_SPI/S_SPI.ino | 78 ++++++++++++++++++++++++++
2 files changed, 115 insertions(+)
create mode 100644 communication/SPI/v0.2_M_SPI/M_SPI.ino
create mode 100644 communication/SPI/v0.2_S_SPI/S_SPI.ino
diff --git a/communication/SPI/v0.2_M_SPI/M_SPI.ino b/communication/SPI/v0.2_M_SPI/M_SPI.ino
new file mode 100644
index 0000000..d6e6a2b
--- /dev/null
+++ b/communication/SPI/v0.2_M_SPI/M_SPI.ino
@@ -0,0 +1,37 @@
+//Master Arduino Code:
+//SPI MASTER (ARDUINO)
+//SPI COMMUNICATION BETWEEN TWO ARDUINO
+//CIRCUIT DIGEST
+
+#include<SPI.h> //Library for SPI
+#define LED 7
+#define ipbutton 2
+int buttonvalue;
+int x;
+void setup (void)
+
+{
+ Serial.begin(115200); //Starts Serial Communication at Baud Rate 115200
+
+ pinMode(ipbutton,INPUT); //Sets pin 2 as input
+ pinMode(LED,OUTPUT); //Sets pin 7 as Output
+
+ SPI.begin(); //Begins the SPI commnuication
+ SPI.setClockDivider(SPI_CLOCK_DIV8); //Sets clock for SPI communication at 8 (16/8=2Mhz)
+ digitalWrite(SS,HIGH); // Setting SlaveSelect as HIGH (So master doesnt connnect with slave)
+}
+
+void loop(void)
+{
+ byte Mastersend,Mastereceive;
+
+ buttonvalue = 8;
+
+ digitalWrite(SS, LOW); //Starts communication with Slave connected to master
+
+ Mastersend = buttonvalue;
+ Mastereceive=SPI.transfer(Mastersend); //Send the mastersend value to slave also receives value from slave
+
+ Serial.println(Mastereceive);
+ delay(50);
+}
diff --git a/communication/SPI/v0.2_S_SPI/S_SPI.ino b/communication/SPI/v0.2_S_SPI/S_SPI.ino
new file mode 100644
index 0000000..87f5a9f
--- /dev/null
+++ b/communication/SPI/v0.2_S_SPI/S_SPI.ino
@@ -0,0 +1,78 @@
+
+//Slave Arduino Code:
+//SPI SLAVE (ARDUINO)
+//SPI COMMUNICATION BETWEEN TWO ARDUINO
+//CIRCUIT DIGEST
+//Pramoth.T
+
+#include<SPI.h>
+#define LEDpin 7
+#define buttonpin 2
+volatile boolean received;
+volatile byte Slavereceived,Slavesend;
+int buttonvalue;
+int x = 5;
+void setup()
+
+{
+ Serial.begin(115200);
+
+ pinMode(buttonpin,INPUT); // Setting pin 2 as INPUT
+ pinMode(LEDpin,OUTPUT); // Setting pin 7 as OUTPUT
+ pinMode(MISO,OUTPUT); //Sets MISO as OUTPUT (Have to Send data to Master IN
+
+ SPCR |= _BV(SPE); //Turn on SPI in Slave Mode
+ received = false;
+
+ SPI.attachInterrupt(); //Interuupt ON is set for SPI commnucation
+
+}
+
+ISR (SPI_STC_vect) //Inerrrput routine function
+{
+ Slavereceived = SPDR; // Value received from master if store in variable slavereceived
+ received = true; //Sets received as True
+}
+
+void loop()
+{ if(received) //Logic to SET LED ON OR OFF depending upon the value recerived from master
+ {
+ if (Slavereceived==8)
+ {
+ x+=1;
+
+
+ /*
+ digitalWrite(LEDpin,HIGH); //Sets pin 7 as HIGH LED ON
+ Serial.println("Slave LED ON");
+ }else
+ {
+ digitalWrite(LEDpin,LOW); //Sets pin 7 as LOW LED OFF
+ Serial.println("Slave LED OFF");
+ }
+
+ buttonvalue = digitalRead(buttonpin); // Reads the status of the pin 2
+
+ if (buttonvalue == HIGH) //Logic to set the value of x to send to master
+ {
+ x=1;
+
+ }else
+ {
+ x=0;*/
+
+ }
+ if(x == 10){x = 0;}
+
+ Slavesend=x;
+
+
+ SPDR = Slavesend;
+ SPDR = x;//Sends the x value to master via SPDR
+ Serial.println(SPDR);
+ Serial.println(Slavesend);
+ delay(500);
+
+
+}
+}