Diff: main.cpp

Revision:

0:4494f6ceb276

Child:

1:ab2a9277c379

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/main.cpp	Mon Apr 08 13:05:19 2019 +0000
@@ -0,0 +1,50 @@
+#include "mbed.h"
+#include "Map.hpp"
+
+#
+
+DigitalOut led_green(LED1);
+DigitalOut led_red(LED2);
+
+InterruptIn user_button(USER_BUTTON);
+AnalogIn ph (PB_0);
+Serial pc (USBTX, USBRX);
+
+float buf[10], temp;
+float avg;
+float phval;
+
+Map map (0, 1.0f, 0, 14);
+
+int main()
+{
+    pc.baud(9600);
+    
+    while (1) {
+        
+        for (int i = 0; i < 10; i++) {          //read values from sensor
+            buf[i] = ph.read();
+            //pc.printf("read %.2f\n\r", buf[i]);
+            wait(0.1);
+        }// end for 1
+        for (int i = 0; i < 9;i++) {            // sort values from smallest to lowest
+            for(int j = i+1; j < 10; j++) {
+                if (buf[i] > buf[j]) {
+                 temp = buf[i];                 // shift data
+                 buf[i] = buf[j];
+                 buf[j] = temp;   
+                
+                } // end if 3
+            } //end for 2
+        }//end for 1
+        
+        avg = 0;
+        for (int i = 2; i < 8; i++) {           // average 6 centre values
+            avg +=buf[i];
+        }// end for 1
+        avg = avg/6;
+        pc.printf("avg = %.2f\n\r", avg);
+        phval = map.Calculate(avg);
+        pc.printf("pH = %.2f\n\r", phval);                   
+        }// end while 1
+}// end main