Diff: slave.cpp

Revision:

7:47e07755d9a4

Parent:

6:82153349cc9b

--- a/slave.cpp	Tue Jul 15 10:04:38 2014 +0000
+++ b/slave.cpp	Thu Sep 18 10:29:33 2014 +0000
@@ -4,7 +4,109 @@
 extern struct SensorData Sensor;
 I2CSlave slave(p28,p27);                       //configuring pins p27, p28 as I2Cslave
 Serial screen (USBTX,USBRX);
-void write_to_master(char send)                           //function to write data to master
+
+
+//#include "slave.h"
+//I2CSlave slave(p28,p27);                       //configuring pins p27, p28 as I2Cslave
+//Serial pc (USBTX,USBRX);
+//SensorData Sensor;
+/*struct SensorData                              //HK_data_structure
+{
+    char voltage[10];
+    char current[10];
+    char temp[10];
+}Sensor;*/
+
+int FUNC_I2C_SLAVE_MAIN(int iterations)
+{
+    
+    wait(0.5);
+    slave.address(0x20);                        //assigning slave address
+    slave.stop();
+    char Switch_Variable;
+    int ReadAddressed=1;
+    int WriteGeneral=3;
+    bool loopvariable1=true;
+    uint8_t loopvariable2=0;
+    bool loopvariable3=true;
+//---------------initialising dummy sensor data-----------------------------------------------------------                         
+    Sensor.Voltage[0]='a';Sensor.Current[0]='1';Sensor.Temperature[0]='k';
+    Sensor.Voltage[1]='b';Sensor.Current[1]='2';Sensor.Temperature[1]='l';
+    Sensor.Voltage[2]='c';Sensor.Current[2]='3';Sensor.Temperature[2]='m';
+    Sensor.Voltage[3]='d';Sensor.Current[3]='4';Sensor.Temperature[3]='n';
+    Sensor.Voltage[4]='e';Sensor.Current[4]='5';Sensor.Temperature[4]='o';
+    Sensor.Voltage[5]='f';Sensor.Current[5]='1';Sensor.Temperature[5]='p';
+    Sensor.Voltage[6]='g';Sensor.Current[6]='2';Sensor.Temperature[6]='q';
+    Sensor.Voltage[7]='h';Sensor.Current[7]='3';Sensor.Temperature[7]='r';
+    while(loopvariable1)
+    { 
+//------------------------to read data from master---------------------------------------------------------       
+    if(slave.receive()==WriteGeneral)                 //checking if slave is addressed to write
+    {
+      Switch_Variable=slave.read();                   //receiving data
+      printf("switch variable=%d\n",Switch_Variable);
+      slave.stop();                                   //reset slave to default receiving state
+      loopvariable1=false;
+//----------------------to interpret and write data to master----------------------------------------------       
+      switch(Switch_Variable)
+      {
+      
+       case '1':  while(loopvariable3)
+                 {
+                     if(slave.receive()==ReadAddressed)             //check if slave is addressed to read 
+                   {
+                      loopvariable3=false;
+                      while(loopvariable2<8)                              //running loop for sending 30 sensors data
+                       {
+                          printf("\nvoltage%d\n",loopvariable2);
+                          write_to_master(Sensor.Voltage[loopvariable2]);   //calling function to send float data     
+                             
+                          printf("\ncurrent%d\n",loopvariable2);
+                          write_to_master(Sensor.Current[loopvariable2]);  //calling function to send float data 
+                             
+                          printf("\ntemp%d\n",loopvariable2);
+                          write_to_master(Sensor.Temperature[loopvariable2]);    //calling function to send float data
+                                   
+                      loopvariable2++;      
+                      }
+                      
+                    }
+                                       
+                  }  
+                  break;
+       case '2' : printf(" telecommand 2\n");
+                  break;         
+                 
+        }
+   }   
+}
+   slave.stop();
+   printf("done");
+}
+
+//------------------function to write data to master---------------------------------------------------
+void write_to_master(char send)                           
+{
+     bool acknowledge;
+     bool loopvariable4=true; 
+     while(loopvariable4)
+      {
+        acknowledge = (bool) slave.write(send);    //sending the byte to master
+        if(acknowledge)                  //breaking loop if data is acknowledged
+         {
+            printf(" acknowledge %d sent %x \n",acknowledge,send);
+            loopvariable4 = false;
+         }
+      } 
+}
+
+
+
+
+
+
+
+/*void write_to_master(char send)                           //function to write data to master
         {
            int acknowledge; 
            int loopvariable4=1;
@@ -13,7 +115,7 @@
            acknowledge = slave.write(send);    //sending the byte to master
            if(acknowledge==1)
             {
-              screen.printf(" acknowledge %d sent %u \n",acknowledge,send);
+              printf(" acknowledge %d sent %u \n",acknowledge,send);
               loopvariable4=0;
             }
            } 
@@ -24,8 +126,8 @@
  
 void FUNC_I2C_SLAVE_MAIN(int iterations)
 {
-    
-    screen.printf("\nSlave entered\n");
+ //   slave.stop();
+    printf("\nSlave entered\n");
     slave.address(slave_address);                           //assigning slave address
     char Switch_Variable;
     
@@ -37,11 +139,13 @@
     
     while(loopvariable1)
     { 
-//to read data from master       
+//    slave.stop();
+//to read data from master    
+     printf("not receiving\n");   
     if(slave.receive()==WriteGeneral)                   //checking if slave is addressed to write
     {
       Switch_Variable=slave.read();                   //receiving data
-      screen.printf("switch variable=%d\n",Switch_Variable);
+      printf("switch variable=%d\n",Switch_Variable);
       slave.stop();                          //reset slave to default receiving state
       loopvariable1=0;
 //to interpret and write data to master       
@@ -58,17 +162,17 @@
                      {
                       if(loopvariable2%3==0)
                           {
-                          screen.printf("\nvoltage%d\n",loopvariable2/3);
+                          printf("\nvoltage%d\n",loopvariable2/3);
                           write_to_master(Sensor.Voltage[loopvariable2/3]);
                           }
                       else if(loopvariable2%3==1)
                           {   
-                          screen.printf("\ncurrent%d\n",loopvariable2/3);
+                          printf("\ncurrent%d\n",loopvariable2/3);
                           write_to_master(Sensor.Current[loopvariable2/3]);
                           }
                       else if(loopvariable2%3==2)
                           {   
-                          screen.printf("\ntemp%d\n",loopvariable2/3);
+                          printf("\ntemp%d\n",loopvariable2/3);
                           write_to_master(Sensor.Temperature[loopvariable2/3]);
                           }         
                       loopvariable2++;
@@ -81,12 +185,12 @@
                     }//while(loopvariable3)
                   
                   break;
-         case 2 : screen.printf(" telecommand 2\n");
+         case 2 : printf(" telecommand 2\n");
                   break;         
                  
         }//switch case ends
    }   
 }
-   screen.printf("\nexited slave function\n");
-}
+   printf("\nexited slave function\n");
+}*/
  
\ No newline at end of file