Diff: main.cpp

Revision:

0:3d76f0b19b14

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue Apr 17 07:40:02 2012 +0000
@@ -0,0 +1,157 @@
+#include "mbed.h"
+#include "7SegSRDriver.h"
+#include "TextLCD.h" //driver 1602 lcd screen
+
+#define pin_debug 0
+#if pin_debug
+DigitalOut pin8(P2_7),pin6(P1_24);
+Ticker pinFlip;
+#endif
+
+Timeout CalcRate;
+DigitalOut led1(P2_2);
+DigitalIn signal(P2_9),XFC(P2_8);;
+//InterruptIn flip(P1_21),flip1(P1_23);    in mbed P1_21 is defined to be LED1, connect LCD to 3V3, can't generate interrupt
+//InterruptIn flip(P2_8),flip1(P2_9); //flip XFC flip1 signal
+TextLCD lcd(P0_24, P0_25, P0_26, P0_3, P0_2,P1_0,TextLCD::LCD16x2); // rs, e, d4-d7
+int signalTotal,XFCTotal,sync_Pass,sync_Fail;
+int i,max; //used for dataToArry function
+int printArray[4];
+float dataToarray(float data);
+int sync_delay = 16;// sync delay micro seconds.
+void pinflip();
+//7 segment class definition,Data,Clock,latch
+SSegSRDriver display(P2_1,P0_7,P0_9, SSegSRDriver_COMN_CATHODE);
+
+
+void calcRate() {
+    float rate = 0;
+    int tempsignalTotal,temp_pass,temp_fail;
+    int j =0;
+    int LEDArray[4];
+#if pin_debug
+    pinFlip.detach();
+#endif
+    //put to temp value to ensure these values not change after this.
+    tempsignalTotal =signalTotal;
+    temp_pass = sync_Pass;
+    temp_fail = sync_Fail;
+    if(sync_Pass>0)
+        rate = (float)temp_pass/(float)(temp_pass+temp_fail)*100;
+    else
+        rate = 0;
+    i=max=0;
+       lcd.cls();
+    if (rate>50) {
+        for (j= 0; j<=3; j++) //clear printArray buffer to 0
+            printArray[j] = 0;
+        dataToarray(rate);
+        //lcd.printf("XFC: %6dHz\n",tempXFCTotal*2); //print XFC: 023000Hz,remeber I'm using one counter to trigger the count
+        lcd.printf("Working\n"); //Don't show XFC message.
+        lcd.printf("Sig: %6dHz\n",tempsignalTotal);//print Sig: 023000Hz
+        j = max; //max is from dataToarray, global variable to index the lenth of the array
+        //printf("The array to print is:");
+        for (int a=0; a<=4; a++)
+            display.clear();
+        
+        while (j<3) {
+            //printf("%d",0);
+            j++;
+            for (int tempIndex = j; tempIndex>=1; tempIndex--)
+                printArray[tempIndex]=printArray[tempIndex-1];
+            printArray[0] = 0;
+        }
+        for (j=0; (j<=3); j++) {
+            //printf("%d ",printArray[j]);
+            LEDArray[j]=printArray[j];
+        }
+        if (max>3) { //which means 100%
+            display.write(LEDArray[3],false);
+            display.write(LEDArray[2],true);
+            display.write(LEDArray[1],false);
+            display.write(LEDArray[0],false);
+        } else {
+            display.write(LEDArray[3],false);
+            display.write(LEDArray[2],false);
+            display.write(LEDArray[1],true);
+            display.write(LEDArray[0],false);
+        }
+    }
+    else{
+      lcd.printf("Warning!\n"); //show warning message message.
+      lcd.printf("No Sync signal\n");
+    }
+     signalTotal = sync_Pass=sync_Fail =0;
+    CalcRate.attach(&calcRate,1.0);
+    led1 = !led1;
+    
+#if pin_debug
+    pinFlip.attach_us(&pinflip,10); //the best speed is 100k/s
+#endif
+}
+#if pin_debug
+void pinflip() {
+    pin8 = !pin8;
+}
+#endif
+float dataToarray(float data) {
+    if (data>=0.1) {
+        i++; //counter increase
+        data = dataToarray(data/10)*10;
+    }
+
+    if (max<=i)
+        //make sure max is the biggest number pointer
+        max = i;
+    float tempData;
+    tempData = data*100;
+    printArray[max-i] = (int)tempData;
+    data = (tempData-printArray[max-i])/100;
+    i--;
+    return (data);
+
+
+}
+int main() {
+    int tempSignal,tempXFC;
+    //lcd.printf("XFC: 0Hz\n"); //initialize
+    lcd.printf("Working\n"); //initialize
+    lcd.printf("Sig: 0Hz\n");//The Sig: 0Hz
+    //clear the led first
+     for (int a=0; a<=4; a++)
+            display.clear();
+    signalTotal = sync_Pass=sync_Fail =0;
+    tempSignal = tempXFC = 0;
+    CalcRate.attach(&calcRate,1.0);
+#if pin_debug
+    pin8 = pin6 =0;
+    pinFlip.attach_us(&pinflip,10); //the best speed is 100k/s
+#endif
+   
+    while (1) {
+        if(tempSignal!=signal)
+        {
+            tempSignal = signal;
+            signalTotal++;
+        }
+        if(tempXFC!=XFC)
+        {
+            tempXFC = XFC;
+            wait_us(sync_delay);
+            if(tempSignal!=signal) //synchronized 
+            {
+                tempSignal = signal;
+                signalTotal++;  
+                sync_Pass++;
+            }
+            else //didn't find sync signal
+                sync_Fail++;
+        }
+        wait_us(1);
+        
+        
+
+
+    }
+
+}