Diff: slave.cpp

Revision:

9:221d218f4690

Parent:

7:f06840d848e3

Child:

10:ed6d3b8d1d56

--- a/slave.cpp	Thu Dec 11 07:34:17 2014 +0000
+++ b/slave.cpp	Mon Dec 15 05:58:04 2014 +0000
@@ -1,101 +1,123 @@
-/* Added fault to hk structure and being sent through I2C. Need to verify the format */
+#include "mbed.h"
+#include "rtos.h"
 #include "slave.h"
-#include "HK.h"
+
+void write_to_master(char);                    //function to write data to master
+
+I2CSlave slave(D14,D15);                       //configuring pins p27, p28 as I2Cslave
+
+Serial pcslave(USBTX, USBRX);
+DigitalOut data_ready(D10);
+int i2c_status=0;                                 //read/write mode for i2c 0 : write2slave, 1 : write2master
+int reset=0;
+int temp;
+
+typedef struct
+{
+    char data;          // To avoid dynamic memory allocation
+    int length;
+}i2c_data;
+
+
+
+Mail<i2c_data,16> i2c_data_receive;
+Mail<i2c_data,16> i2c_data_send;
  
-extern struct SensorData Sensor;
-I2CSlave slave(PTC9,PTC8);                       //configuring pins p27, p28 as I2Cslave
-Serial screen (USBTX,USBRX);
-void write_to_master(char send)                           //function to write data to master
-        {
-           int acknowledge; 
-           int loopvariable4=1;
-           while(loopvariable4)
-           {
-           acknowledge = slave.write(send);    //sending the byte to master
-           if(acknowledge==1)
+
+void FUNC_I2C_WRITE2CDMS(char *data, int length=1)
+{
+       int slave_status = 1;
+   
+    while(slave_status)
+    {                 
+            slave.address(0x20);
+            if(slave.receive()==1)
             {
-              screen.printf(" acknowledge %d sent %u \n",acknowledge,send);
-              loopvariable4=0;
+                slave_status=slave.write(data,length);
+               
+                
+            }
+            else if(slave.receive()==3 || slave.receive()==2)
+            {
+                slave_status=slave.read(data,length);
             }
-           } 
-        }
-        
- 
- 
- 
-void FUNC_I2C_SLAVE_MAIN(int iterations)
+            
+    }
+            printf("\ndone\n\r");
+
+}
+char data_send,data_receive;
+void T_I2C_BAE()
 {
-    
-    screen.printf("\nSlave entered\n");
-    slave.address(slave_address);                           //assigning slave address
-    slave.stop();
-    char Switch_Variable;
-    
-    
-    int loopvariable1=1;
-    int loopvariable2=0;
-    int loopvariable3=1;
-//initialising dummy sensor data                         
-    
-    while(loopvariable1)
-    { 
-//to read data from master       
-    if(slave.receive()==WriteGeneral)                   //checking if slave is addressed to write
-    {
-      slave.stop();
-      Switch_Variable=slave.read();                   //receiving data
-      screen.printf("switch variable=%d\n",Switch_Variable);
-      slave.stop();                          //reset slave to default receiving state
-      loopvariable1=0;
-//to interpret and write data to master       
-      switch(Switch_Variable)
-      {
+    //char data_send,data_receive;
+    //while(1)
+    //{
+       // Thread::signal_wait(0x1);
+        //i2c_status = temp;
+        //wait(0.5);
+        printf("\n entered thread\n\r");
+        if(i2c_status == 0 && reset !=1)
+        {
+            
+            FUNC_I2C_WRITE2CDMS(&data_receive);
+            i2c_data * i2c_data_r = i2c_data_receive.alloc();
+            i2c_data_r->data = data_receive;
+            i2c_data_r->length = 1;
+            i2c_data_receive.put(i2c_data_r);
+            printf("\n Data received from CDMS is %c\n\r",data_receive);
+            i2c_data_receive.free(i2c_data_r);                              // This has to be done from a differen thread
+            
+        }
+        else if(i2c_status ==1 && reset !=1)
+        {
+            osEvent evt = i2c_data_send.get();
+            if (evt.status == osEventMail) 
+            {
+                i2c_data *i2c_data_s = (i2c_data*)evt.value.p;
+                data_send = i2c_data_s -> data;
+                FUNC_I2C_WRITE2CDMS(&data_send);
+                printf("\nData sent to CDMS is %c\n\r",data_send);
+                i2c_data_send.free(i2c_data_s);
+                i2c_status = 0;
+                //temp = i2c_status;
+            }
+        }  
+           
+    //}
+}
 
-       
-       case 1:   printf("\nEntered switch\n"); 
-                   while(loopvariable3)
-                  {
-                     if(slave.receive()==ReadAddressed)             //check if slave is addressed to read 
-                   {
-                      while(loopvariable2<iterations)
-                     {
-                      if(loopvariable2%3==0)
-                          {
-                          screen.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);
-                          write_to_master(Sensor.Current[loopvariable2/3]);
-                          }
-                      else if(loopvariable2%3==2)
-                          {   
-                          screen.printf("\ntemp%d\n",loopvariable2/3);
-                          write_to_master(Sensor.Temperature[loopvariable2/3]);
-                          }         
-                      loopvariable2++;
-                       }
-                       screen.printf("\nfault %c\n",Sensor.faultpoll);
-                       write_to_master(Sensor.faultpoll);
-                       screen.printf("\nfault %c\n",Sensor.faultir);
-                       write_to_master(Sensor.faultir);
-                       screen.printf("\npower mode %c\n",Sensor.power_mode);
-                       write_to_master(Sensor.power_mode);
-                       printf("\nExited i2c while loop\n");
-                      slave.stop();    
-                      loopvariable3=0;  
-                    }//if(read addressed)
-                    
-                    }//while(loopvariable3)
-                  
-                  break;
-         case 2 : screen.printf(" telecommand 2\n");
-                  break;         
-                 
-        }//switch case ends
-   }   
+        
+
+void FUNC_INT()
+{
+   reset = 0;
+   
+     
+}
+
+void FUNC_RESET()
+{
+    reset = 1;
 }
-   screen.printf("\nexited slave function\n");
+
+void ir2master()
+{
+        
+        char data='a';
+        data_ready=0;
+        data = pcslave.getc();
+        reset =0;
+        i2c_status=1;
+        i2c_data * i2c_data_s = i2c_data_send.alloc();
+        i2c_data_s->data = data;
+        i2c_data_s->length = 1;
+        i2c_data_send.put(i2c_data_s); 
+        data_ready=1;
+        //temp = i2c_status;
 }
- 
\ No newline at end of file
+      
+   
+   
+
+
+