Diff: main.cpp

Revision:

1:97884b766b51

Parent:

0:440ae480bff2

Child:

2:b3286d232452

--- a/main.cpp	Mon Aug 24 01:36:23 2015 +0000
+++ b/main.cpp	Mon Aug 31 12:46:13 2015 +0000
@@ -1,9 +1,10 @@
 #include "mbed.h"
 
-Ticker Read_Port;
+Ticker Read_Port;                       //Timer Polling
+
 PortIn     DataIn(PortC, 0x000000FF);   // p21-p26
-DigitalOut Reset(PTC12);
-Serial Comm(USBTX, USBRX);
+DigitalOut Reset(PTC12);                //ptc12 reset
+Serial Comm(USBTX, USBRX);              
 
 #define RX_BUFF_SIZE  64
 
@@ -13,6 +14,8 @@
 
 int Data_avl;
 int Port_Data;
+int Port_Data_prev=0;
+int Time_cntr=0;
 
 void Serial_Read_callback()
 {
@@ -43,16 +46,26 @@
 void Read_Port_callback()
 {
     Port_Data=DataIn.read();
-    Data_avl=1;
+    if((Port_Data ^ Port_Data_prev) != 0)
+    { 
+        Data_avl=1;
+        Port_Data_prev=Port_Data;
+    }
+    Time_cntr++;    
 }
 
 int main()
 {
     int ch;
     int state=0;
-    int cmd;
-    int new_frame;
-    int run_debug;
+    int cmd=0;;
+    int paramval[3][3];
+    int paramstate=0;
+    int paramdigcnt=0;
+    int new_frame=0;
+    int run_debug=0;
+    
+    float scan_time;
     Comm.baud(115200);
     Comm.attach(&Serial_Read_callback);
     
@@ -61,20 +74,35 @@
         if(Serial_Available())
         {
             ch=Serial_Read();
+            Comm.printf("%c",ch,state);
             switch (state)
             {
                 case 0:     if(ch == '<')
+                            {
                                 state++;
+                                paramstate=0;;
+                            }    
+                                
                             break;
                             
                 case 1:     cmd = ch;
                             state++;
                             break;
                             
-                case 2:     if(ch == '>')
+                case 2:     if(ch == ',')
+                            {
+                                paramstate++;
+                                paramdigcnt=2;
+                            }
+                            else if(ch == '>')
                             {
                                 state=0;
                                 new_frame =1;
+                                
+                            }
+                            else 
+                            {
+                                paramval[paramstate-1][paramdigcnt--]=ch-'0';
                             }    
                             break;
                 
@@ -86,11 +114,15 @@
         
         if(new_frame)
         {
+            Comm.printf("\n\rStarted polling Command=%c \n\r",cmd);
             new_frame =0;
-            
+            Port_Data_prev=0;
+            Time_cntr=0;
             if(cmd == 'P')
             {
-                Read_Port.attach(&Read_Port_callback,0.1);
+                scan_time= (paramval[0][0]-+paramval[0][1]* 10 + paramval[0][2] * 100)*0.01;
+                Comm.printf("Scan Time %f mS \n\r",scan_time*1000);
+                Read_Port.attach(&Read_Port_callback,scan_time);
                 Reset=0;
                 wait(0.01);
                 Reset=1;
@@ -107,7 +139,9 @@
         {
             if(Data_avl)
             {
-                Comm.printf("<%d>",Port_Data);
+                Comm.printf("<%.4X,%.2X>\n\r",Time_cntr,Port_Data);
+                Data_avl=0;
+                Time_cntr=0;
             }
         }