Revision 2:79b52803da22, committed 2014-01-03

Comitter:

GerritPathuis

Date:

Fri Jan 03 18:47:33 2014 +0000

Parent:

1:4bd14d5374c3

Commit message:

Tested with two channels connected to a function generator

Changed in this revision

--- a/main.cpp	Thu Jan 02 14:01:30 2014 +0000
+++ b/main.cpp	Fri Jan 03 18:47:33 2014 +0000
@@ -1,8 +1,14 @@
 //////////////////////////////////////
-// basen on PwmIn Library
-// Basis is to disable the interrupts
+// Based on PwmIn Library
+// The basis is to disable the interrupts
 // of the other PwmIn inputs
-///////////////////////////////////////
+// Connected to the function generator
+// puls on both inputs at the exact
+// same time.
+// Works excellent but further testing
+// showed that there is no real advantage 
+// above the original PmwIn library
+//////////////////////////////////////
 #include "mbed.h"
 #include "InterruptIn.h"
 #define NR 20
@@ -14,7 +20,8 @@
     float period();
     float pulsewidth();
     float dutycycle();
-    void disable();  
+    void disable();
+    void enable();
 
 protected:
     void rise();
@@ -55,7 +62,12 @@
 
 void PwmIn::disable()
 {
-   // _p.enable_irq();
+    _p.disable_irq();
+}
+
+void PwmIn::enable()
+{
+    _p.enable_irq();
 }
 
 void PwmIn::rise()
@@ -70,27 +82,50 @@
 }
 
 struct product {
-    float pulse;
-    float width;
-    float duty;
+    float pulsewidth;
+    float period;
+    float cycle;
 } acc_a[NR], acc_b[NR], acc_c[NR],acc_d[NR];
 
 
 int main()
 {
-    char pbuffer[60]="---";
+    char pbuffer[512]="---";
     int i;
 
+    pc.baud(9600);
+    sprintf(pbuffer, "Start test, baudrate is set to 9600 \n\r");
+    pc.puts(pbuffer);
+
+    a.disable();
+    b.disable();
     while(1) {
-     //   a.disable();                            // Stop interrupts for sensor B
+        //-------------- sensor a--------------------
+        a.enable(); // signal on input 50Hz is period of 20 milli second
+        wait_ms(40); // signal on input 50Hz is period of 20 milli second
         for (i=0; i<NR; i++) {
-            acc_a[i].duty= a.dutycycle();       // Sensor A
-            acc_b[i].duty= b.dutycycle();
+            acc_a[i].pulsewidth= a.pulsewidth();    // Sensor A
+            acc_a[i].period= a.period();            // Sensor A
+            acc_a[i].cycle= a.dutycycle();          // Sensor A
         }
+        a.disable();
+
+        //-------------- sensor b--------------------
+        b.enable(); // signal on input 50Hz is period of 20 milli second
+        wait_ms(40); // 50Hz is period of 20 milli second
+        for (i=0; i<NR; i++) {
+            acc_b[i].pulsewidth= b.pulsewidth();    // Sensor B
+            acc_b[i].period= b.period();            // Sensor B
+            acc_b[i].cycle= b.dutycycle();          // Sensor B
+        }
+        b.disable();
 
         for (i=0; i<NR; i++) {
-            sprintf(pbuffer, " a= %f, b= %f \n\r", acc_a[i].duty, acc_b[i].duty);
+            sprintf(pbuffer, "a_pulse= %f, a_period= %f, a_c= %f, b_puls= %f, b_period= %f, b_cycle %f\n\r", acc_a[i].pulsewidth, acc_a[i].period, acc_a[i].cycle, acc_b[i].pulsewidth, acc_b[i].period, acc_b[i].cycle);
             pc.puts(pbuffer);
         }
+        sprintf(pbuffer, "\n\r");
+        pc.puts(pbuffer);
+        wait_ms(100);
     }
 }

--- a/mbed.bld	Thu Jan 02 14:01:30 2014 +0000
+++ b/mbed.bld	Fri Jan 03 18:47:33 2014 +0000
@@ -1,1 +1,1 @@
-http://mbed.org/users/mbed_official/code/mbed/builds/a9913a65894f
\ No newline at end of file
+http://mbed.org/users/mbed_official/code/mbed/builds/dc225afb6914
\ No newline at end of file