Diff: main.cpp

Revision:

1:9e03798d4367

Parent:

0:2cf4880c312a

Child:

2:b6ccdc962742

--- a/main.cpp	Tue Dec 27 16:42:24 2016 +0000
+++ b/main.cpp	Tue Dec 27 17:45:57 2016 +0000
@@ -37,21 +37,26 @@
     return -1;
 }
 
+// ppp frame start/end flag
+#define FRAME_START_END 0x7e
+
 int main()
 {
     pc.baud(115200);
     pc.attach(&rxHandler,Serial::RxIrq); // activate the receive interrupt handler
     int waitingForPpp = 1; // client string not found yet
+    int flagCount=0;
     while(1) {
         while ( pc_readable() ) {
-            pc_getBuf(); // for now just flush input
+            int rx = pc_getBuf();
+            if (rx == FRAME_START_END) flagCount++;
             char * clientFound = strstr( rxbuf, "CLIENTCLIENT" ); // look for string
             if( clientFound ) {
                 strcpy( clientFound, "FOUND!FOUND!" ); // overwrite found string
                 if (waitingForPpp) pc.printf("CLIENTSERVER"); // respond to PC
                 waitingForPpp = waitingForPpp ? 0 : 1; // TOGGLE waiting flag
             }
-            myled = waitingForPpp ? 1 : 0; // display found status on led
+            if ( flagCount>0 ) myled = ((flagCount/2)%2); // toggle on PPP frame detect
         }
     }
 }