Revision 0:c56707c70c71, committed 2019-05-28

Comitter:

qosay147

Date:

Tue May 28 11:43:01 2019 +0000

Commit message:

Reading frequency from mains at a very fast rate and displaying on PC.

Changed in this revision

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/C12832_lcd.lib	Tue May 28 11:43:01 2019 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/dreschpe/code/C12832_lcd/#8f86576007d6

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/LM75B.lib	Tue May 28 11:43:01 2019 +0000
@@ -0,0 +1,1 @@
+http://developer.mbed.org/users/chris/code/LM75B/#6a70c9303bbe

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/Servo.lib	Tue May 28 11:43:01 2019 +0000
@@ -0,0 +1,1 @@
+http://mbed.org/users/simon/code/Servo/#36b69a7ced07

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Tue May 28 11:43:01 2019 +0000
@@ -0,0 +1,53 @@
+ //This code is for 8Vpp or amplitude of 4V when connected to mbed 
+ 
+#include "mbed.h"
+#include "C12832_lcd.h"
+#include <complex>
+#include "Servo.h"
+
+C12832_LCD lcd;
+AnalogIn   VIN(A2);
+Servo s1(p22); 
+Servo s2(p23);
+Serial pc(USBTX, USBRX); // see how to use this to print off to PC
+
+float y;
+float f;
+int counter = 1;
+Timer t;
+
+int main() 
+{                       //open1
+    lcd.printf("STARTING! \n") ;
+    while(1)            //Repeat process loop
+    {                   //open2
+        counter = 1;    // resets counter back to 1 every time frequency has been read
+        t.reset();      // reset timer every time the frequency has been read out
+        while   (counter < 22)           // while loop counts for 21 hits on peak point 
+        {               //open3
+            float V =  3.2 * VIN.read(); // Converting the Voltage input to a higher decimal for more accurate readings. Check if needed by dividing the next if statement by 3.2...
+            if( V >= 0.9&& V <= 1.1)     // Checks when the voltage on the sinusoidal input is at a given range to measure time taken for certain amount of hitpoints to calculate frequency... 
+            {           //open4
+            lcd.printf("V = %2.4f Counter is : %d \n", V, counter) ; // just a checking for myself to ensure counter is working, Will be taken out because unnecessary reading...
+            if (counter == 1) //when counter is equal to 1 and the previous if statement is correct then will start the timer once, until counter is < 21
+                {       //open5
+                t.start();
+                }       //close5
+            counter++;                   // adds to counter 1, everytime the while loop has been gone through
+            }           //close4 
+        }               //close3
+    t.stop();                            // Timer stops when the counter loop is finished
+    y = t.read()/10.01 ;             // averaging the time it has taken to take      
+    f = ((1/y)+0.013);
+        lcd.cls();
+       //lcd.printf("time taken is : %3.4f sec \n", t.read()) ; 
+       lcd.printf(" %3.3f Hz \n", f) ;   // print frequency reading to 3 decimal places 
+ 
+s1 = ((1*f)- 49.5) ;
+s2 = ((1*f)- 49.45);
+//s2 = 0.5;
+      // No need for this when printing off on computer screen 
+        pc.printf("$%d %d;", f, y);      // SEE HOW TO USE THIS TO PRINT OFF FREQUENCY READING TO PC
+       wait_ms(2000); 
+    }                   //close2
+}                       //close1
\ No newline at end of file

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/mbed.bld	Tue May 28 11:43:01 2019 +0000
@@ -0,0 +1,1 @@
+https://os.mbed.com/users/mbed_official/code/mbed/builds/e7ca05fa8600
\ No newline at end of file