Revision 0:b04378e035d8, committed 2016-12-19

Comitter:

inuD

Date:

Mon Dec 19 18:47:36 2016 +0000

Commit message:

Oscilloscope 20hz-20khz LabView kl25z

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/ComparatorIn.lib	Mon Dec 19 18:47:36 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/frankvnk/code/ComparatorIn/#e6a4cd28e217

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Dec 19 18:47:36 2016 +0000
@@ -0,0 +1,126 @@
+#include "mbed.h"
+#include "ComparatorIn.h"
+
+#define MAX_SAMPLERATE 50000
+#define Min_FREQ 20
+#define MAX_FREQ 20000
+#define MaxFrdmVAnalogRef 3.3
+#define ThresholdOut 1000
+
+Serial pc(USBTX,USBRX);
+
+double AutoTrig, ValTrig, RiseOrFall, nWave;              //  1-0 for autotrig, value of trigger, on rise or fall of WaveFront
+double AutoSr, ValSr;                    //  1-0 for autoSampleRate (max Value), value of SampleRate
+double NumberSample, TranslationSample;  //  number of sample send to pc, first or last sample discard
+
+double Threshold = 0;
+double SampleRate = MAX_SAMPLERATE;
+double MaxFrdmVAnalog;
+
+int dimArr;
+int stopArray = -1;
+int startArray = -1;
+int numbWave = 1;
+double range;
+double BottomLimit;
+double TopLimit;
+double adcRead;
+
+
+AnalogIn DAC_In (PTB0);
+ComparatorIn COMP_In(PTC8, PTE30); // in+ = PTC8, in- = 12-bit DAC
+
+
+// Comparator callback functions
+void cmp_rise_ISR(void){
+    stopArray = stopArray + 1;
+    startArray = 0;
+    }
+
+void cmp_fall_ISR(void){
+    stopArray = stopArray + 1;
+    startArray = 0;
+    }
+
+void Setting(double autoSr, double valSr, double autoTrig, double valTrig, double riseOrFall){
+            if (autoSr == 1){           
+            SampleRate = MAX_SAMPLERATE;           
+            }
+            
+        else{            
+            SampleRate = valSr;
+            }        
+        
+        Threshold = (valTrig * MaxFrdmVAnalog) - BottomLimit;                   //Value Trigger desired / Max Input
+                                                                                //all /MaxFrdmVAnalogRef
+                                                                                //Threshold = (valTrig / MaxFrdmVAnalog) + BottomLimit; 
+        
+        if (autoTrig == 1){
+            
+            COMP_In.treshold(Threshold);                          //Set Threshold
+            
+            if (riseOrFall == 0){            
+              COMP_In.rising(cmp_rise_ISR);                // Set pointer to rising interrupt functio
+                }
+            else {          
+              COMP_In.falling(cmp_fall_ISR);               // Set pointer to falling interrupt function       
+                }     
+            }
+        else{      
+            COMP_In.treshold(ThresholdOut);    
+            } 
+    }
+
+void printWave(int dimarr, int sampleRate, int numberSample, int translationSample){
+    
+    double dataLab[dimarr];
+    for (int i = 0; i < dimarr; i++){ // fare if di variabile - su callback function
+                
+        adcRead = (DAC_In / MaxFrdmVAnalog) + BottomLimit; //all *MaxFrdmVAnalogRef?
+        dataLab[i] = adcRead;
+        
+        double SR = sampleRate;
+        wait(1 / SR);                    
+        }
+        
+    int dimarray = dimarr - numberSample;
+    int startarray = dimarray*translationSample/10;    
+    
+    for(int j = startarray; j< dimarr - dimarray; j++){                   
+            printf("%f ", dataLab[j]);   
+        }
+    
+    }
+
+
+int main() {
+    
+    if (MAX_SAMPLERATE < 2*MAX_FREQ)
+        {
+            printf("Error SampleRate");
+            }
+
+    while(1) {
+        // there are some parameters only for Labview
+        pc.scanf("%f,%f,%f,%f,%f,%f,%f,%f,%f", &AutoTrig, &ValTrig, &nWave , &RiseOrFall, &AutoSr, &ValSr, &NumberSample, &TranslationSample, &TopLimit, &BottomLimit);
+        double DimensionArray = (SampleRate / Min_FREQ) * 2;        //at least 2 waveform of the minimum Frequ   
+        dimArr = int (DimensionArray);
+        //numbWave = int (nWave);
+
+        range = TopLimit - BottomLimit;
+        MaxFrdmVAnalog = MaxFrdmVAnalogRef / range;
+        
+        Setting(AutoSr, ValSr, AutoTrig, ValTrig, RiseOrFall); //testing - setting every some sec(contator intern)
+        if (AutoTrig == 1){
+            if (startArray == 0 && stopArray == 0){
+                printWave(dimArr, SampleRate, NumberSample, TranslationSample);
+                startArray = -1;
+                stopArray = -1;
+                }    
+            }
+        else{
+            printWave(dimArr, SampleRate, NumberSample, TranslationSample);
+            }
+        }
+    }
+

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Mon Dec 19 18:47:36 2016 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/mbed_official/code/mbed/builds/d75b3fe1f5cb
\ No newline at end of file