Diff: main.cpp

Revision:

14:c65831c25aaa

Parent:

13:d882b8a042b4

Child:

15:b0154c910143

--- a/main.cpp	Sun Jan 01 02:09:18 2017 +0000
+++ b/main.cpp	Sun Jan 01 04:44:30 2017 +0000
@@ -15,7 +15,7 @@
 // https://en.wikibooks.org/wiki/Serial_Programming/IP_Over_Serial_Connections
 
 Serial pc(USBTX, USBRX); // The USB com port - Set this up as a Dial-Up Modem on your pc
-Serial xx(PC_10, PC_11); // debug port - use a second USB serial port to monitor
+Serial xx(PC_10, PC_11); // debug port - use an additional USB serial port to monitor this
 
 #define debug(x) xx.printf( x )
 
@@ -58,6 +58,12 @@
     __enable_irq();
 }
 
+int ledState=0;
+void led1Toggle(){ 
+    ledState = ledState? 0 : 1;
+    led1 = ledState;
+}
+
 int pc_readable() // check if buffer has data
 {
     return (ppp.rx.head==ppp.rx.tail) ? 0 : 1 ;
@@ -76,6 +82,7 @@
 void scanForConnectString(); // scan for connect attempts from pc
 
 void processFrame(int start, int end) { // process received frame
+    led1Toggle(); // change led1 state when frames are received
     if(start==end) { xx.printf("Null Frame c=%d\n",ppp.rx.total); pc.putc(0x7e); return; }
     crcReset();
     char * dest = ppp.pkt.buf;
@@ -144,7 +151,6 @@
 void ipDefaultHandler(){ debug("IPCP Other\n"); }
 
 void IPCPframe() {
-    led1 = ppp.pkt.buf[5] & 1; // This is the sequence number so the led blinks on packets
     //ppp.pkt.id = ppp.pkt.buf[5]; // remember the sequence number 
     int code = ppp.pkt.buf[4]; // packet type is here
     switch (code) {
@@ -355,8 +361,8 @@
 
 int main()
 {
-    pc.baud(115200);
-    xx.baud(115200); 
+    pc.baud(115200); // USB virtual serial port
+    xx.baud(115200); // second serial port for debug messages
     xx.puts("\x1b[2J\x1b[HReady\n"); // VT100 code for clear screen & home
     
     pppInitStruct(); // initialize all the PPP properties
@@ -369,12 +375,10 @@
         if ( ppp.online==0 ) scanForConnectString(); // try to connect
         while ( pc_readable() ) {
             int rx = pc_getBuf();
-            wait(0.001);
             if (frameBusy) { 
                 if (rx==FRAME_7E) {
                     frameBusy=0; // done gathering frame
                     frameEndIndex=ppp.rx.tail-1; // remember where frame ends
-                    void processFrame(int start, int end); // process a received frame
                     processFrame(frameStartIndex, frameEndIndex);
                 }
             }