Diff: main.cpp

Revision:

0:e2c2d9435339

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Nov 11 11:18:17 2013 +0000
@@ -0,0 +1,119 @@
+/*
+ * ----------------------------------------------------------------------------
+ * "THE BEER-WARE LICENSE" (Revision 42):
+ * <anthony.harivel@gmail.com> wrote this file. As long as you retain this notice you
+ * can do whatever you want with this stuff. If we meet some day, and you think
+ * this stuff is worth it, you can buy me a beer in return 
+ * ----------------------------------------------------------------------------
+ */
+ 
+#include "mbed.h"
+
+Serial pc(USBTX,USBRX); //enable serial connection
+
+InterruptIn dcfPinIn (PTD7); //connection to non inverting output of dcf module
+
+Timer r,f; //create two timers
+
+int count; //count the received info per minutes
+
+int dcf_array[60]; //array of the dcf77 info
+
+// boolean for Rising and falling edge
+volatile bool bRise = false;
+volatile bool bFall = false;
+
+// when we got a rising edge...
+void riseInt()
+{
+    f.stop();
+    r.reset();
+    r.start();
+    bFall = true;
+}
+
+// when we got a falling edge...
+void fallInt()
+{
+    r.stop();
+    f.reset();
+    f.start();
+    bRise = true;
+}
+
+// simple dcf77 information print function.
+void print_time()
+{   
+    int hour, min, day, month, year;
+    
+    //calculate hour--------------------------------------------------------------------------------------
+    hour = dcf_array[34] * 20 + dcf_array[33] * 10 + dcf_array[32] * 8 + dcf_array[31] * 4 + dcf_array[30] * 2 + dcf_array[29] * 1;
+    
+    //calculate minutes------------------------------------------------------------------------------------
+    min = dcf_array[24] * 8 + dcf_array[23] * 4 + dcf_array[22] * 2 + dcf_array[21] * 1 + dcf_array[27] * 40 + dcf_array[26] * 20 +dcf_array[25] * 10;
+    
+    //calculate day----------------------------------------------------------------------------------------
+    day = dcf_array[39] * 8 + dcf_array[38] * 4 + dcf_array[37] * 2 + dcf_array[36] * 1 + dcf_array[41] * 20 + dcf_array[40] * 10;
+    
+    //calculate month--------------------------------------------------------------------------------------
+    month = dcf_array[49] * 10 + dcf_array[48] * 8 + dcf_array[47] * 4 + dcf_array[46] * 2 + dcf_array[45] * 1;
+    
+    //calculate year---------------------------------------------------------------------------------------
+    year = dcf_array[57] * 80 + dcf_array[56] * 40 + dcf_array[55] * 20 + dcf_array[54] * 10 + dcf_array[53] * 8 +dcf_array[52] * 4 + dcf_array[51] * 2 + dcf_array[50] * 1;
+    
+    pc.printf("%dh%dmin %d/%d/%d \r\n", hour, min, day, month, year);
+}
+
+// main //
+int main()
+{
+    // attach two functions:
+    // 1 for the falling edge
+    // 1 for the rising edge
+    dcfPinIn.rise(&riseInt);
+    dcfPinIn.fall(&fallInt);
+    
+    // endless loop
+    while(1)
+    {
+        ///////////////////////////
+        if( bFall == true )
+        {
+            // did we pass the reset time ?
+            if( f.read_ms() > 950 )
+            {
+                //pc.printf("reset");
+                print_time();
+                count = 0;
+            }
+            else
+            {
+                pc.printf(".");
+            }
+            
+            bFall = false;
+        } //if bFall
+        
+        //////////////////////////    
+        if( bRise == true )
+        {
+            // 100ms = '0' and 200ms = '1' 
+            if( r.read_ms() > 150 )
+            {
+              //pc.printf("1");
+              dcf_array[count] = 1;
+            }
+            else
+            {
+              //pc.printf("0");
+              dcf_array[count] = 0;
+            }
+            
+            count ++;
+            bRise = false;
+        }//if bRise
+            
+    } // while
+} // main
+
+