Spi successful with start and end bytes

communication/SPI/notes.txt

@@ -0,0 +1,10 @@
+0.2 is spi with random data (incrementing characters)
+0.4 is spi with a seperator bytes
+0.5 is spi with both start and end bytes, sensing whether there is data avilable before putting a start byte
+
+
+future
+------
+
+0.6 will make it into a string for useful inputs, that can then be converted into float arrays.
+1.0 is full integration with MPU6050

communication/SPI/v0.2_M_SPI/M_SPI/M_SPI.ino

@@ -32,6 +32,6 @@ void loop(void)
   Mastersend = buttonvalue;                            
   Mastereceive=SPI.transfer(Mastersend); //Send the mastersend value to slave also receives value from slave
   
-  Serial.println(Mastereceive);
+  Serial.println((char) Mastereceive);
   delay(50);
 }

communication/SPI/v0.2_S_SPI/S_SPI/S_SPI.ino

@@ -11,7 +11,7 @@
 volatile boolean received;
 volatile byte Slavereceived,Slavesend;
 int buttonvalue;
-int x = 5;
+int x = 65;
 void setup()
 
 {
@@ -62,7 +62,7 @@ void loop()
         x=0;*/
    
       }
-           if(x == 10){x = 0;}
+           if(x == 122){x = 65;}
            
         Slavesend=x;        
         
@@ -71,7 +71,7 @@ void loop()
         SPDR = x;//Sends the x value to master via SPDR 
         Serial.println(SPDR);  
         Serial.println(Slavesend);
-        delay(500);
+        delay(50);
       
  
 }

communication/SPI/v0.4_M_SPI/M_SPI/M_SPI.ino

@@ -31,7 +31,9 @@ void loop(void)
   
   Mastersend = buttonvalue;                            
   Mastereceive=SPI.transfer(Mastersend); //Send the mastersend value to slave also receives value from slave
+  Serial.print((int) Mastereceive);
+  Serial.print("\t");
   
-  Serial.println(Mastereceive);
+  Serial.println((char) Mastereceive);
-  delay(50);
+  delay(250);
 }

communication/SPI/v0.4_S_SPI/S_SPI/S_SPI.ino

@@ -11,7 +11,10 @@
 volatile boolean received;
 volatile byte Slavereceived,Slavesend;
 int buttonvalue;
-int x = 5;
+int x = 65;
+int wai = 0;
+String t1 = "1.00 0.00 0.00 0.00";
+char Buf[32]; 
 void setup()
 
 {
@@ -35,44 +38,40 @@ ISR (SPI_STC_vect)                        //Inerrrput routine function
 }
 
 void loop()
-{ if(received)                            //Logic to SET LED ON OR OFF depending upon the value recerived from master
+{ 
+  if(received)                            //Logic to SET LED ON OR OFF depending upon the value recerived from master
    {
       if (Slavereceived==8) 
       {
-        x+=1;
+        if(wai==0){
+          t1.toCharArray(Buf,t1.length());
+        }
         
         
-        /*
-        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;}
+        Serial.print(wai);
+        if(wai==t1.length()){x = 's';}
+        else{
+          if(wai==t1.length()+1){
+            wai=0;
+          }
+          
+            x = t1[wai];
+        }
         
         Slavesend=x;        
         
                           
         SPDR = Slavesend;  
         SPDR = x;//Sends the x value to master via SPDR 
-        Serial.println(SPDR);  
+        wai++;
-        Serial.println(Slavesend);
+        delay(250);
-        delay(500);
+        
       
  
 }
-}
+}}

communication/SPI/v0.5_M_SPI/M_SPI/M_SPI.ino

@@ -0,0 +1,39 @@
+//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.print((int) Mastereceive);
+  Serial.print("\t");
+  
+  Serial.println((char) Mastereceive);
+  delay(250);
+}

communication/SPI/v0.5_S_SPI/S_SPI/S_SPI.ino

@@ -0,0 +1,90 @@
+
+//Slave Arduino Code:
+//SPI SLAVE (ARDUINO)
+//SPI COMMUNICATION BETWEEN TWO ARDUINO 
+//CIRCUIT DIGEST
+//Pramoth.T
+int laste = 0;
+#include<SPI.h>
+#define LEDpin 7
+#define buttonpin 2
+volatile boolean received;
+volatile byte Slavereceived,Slavesend;
+int buttonvalue;
+int x = 65;
+int wai = -1;
+String t1 = "1.00 0.00 0.00 0.00";
+char Buf[32]; 
+int onset = 1;
+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) 
+      {
+        if(wai==-1 && t1.length()>18 && t1.length()<33){
+          t1.toCharArray(Buf,t1.length());
+        }
+        if(t1.length()>18 && t1.length()<33){
+        
+        
+        
+        
+       
+   
+      
+        Serial.print(wai);
+        if(wai==t1.length()){x = 'e'; wai = -2; t1 = "wqieuroqwueyroqwueyroiweuqyrioqwueyrioqweuryoiqweuryoiqweurywq";}
+        else{
+          if(wai == -1){x = 's';}
+          
+          else{
+            x = t1[wai];}
+        }}
+        
+        Slavesend=x;        
+        if(x==laste && x == (int) 'e'){
+          laste = x;
+
+          x = 'b';
+        }
+        if(onset==1){
+          x = 'o';
+          wai--;
+          onset = 0;
+        }
+        laste = x;
+           
+        SPDR = Slavesend;  
+        SPDR = x;//Sends the x value to master via SPDR 
+        wai++;
+        
+        }
+        delay(250);
+        
+        
+ 
+}
+}