Revision 1:5dd840359117, committed 2015-11-16

Comitter:

57340500039

Date:

Mon Nov 16 14:03:41 2015 +0000

Parent:

0:b30041f75f46

Commit message:

read voltage and show it with 7 segments LED.

Changed in this revision

diff -r b30041f75f46 -r 5dd840359117 main.cpp
--- a/main.cpp	Sun Aug 23 13:04:42 2015 +0000
+++ b/main.cpp	Mon Nov 16 14:03:41 2015 +0000
@@ -1,20 +1,42 @@
 #include "mbed.h"
+#include "math.h"
  
 AnalogIn analog_value(A0);
  
-DigitalOut led(LED1);
+DigitalOut led1(D2);
+DigitalOut led2(D3);
+DigitalOut led3(D4);
+DigitalOut led4(D5);
+DigitalOut led5(D6);
+DigitalOut led6(D7);
 
+int i=0,vaule1,vaule10;
+//DigitalOut led[6] = {led1,led2,led3,led4,led5,led6}; 
 int main() {
     float meas;
     
     while(1) {
         meas = analog_value.read(); // Converts and read the analog input value (value from 0.0 to 1.0)
-        meas = meas * 3300; // Change the value to be in the 0 to 3300 range
-        if (meas > 2000) { // If the value is greater than 2V then switch the LED on
-          led = 1;
+        meas = meas * 33.0; // Change the value to be in the 0 to 33 range
+        vaule10 = floor(meas/10.0);
+        vaule1 = floor((meas - (float) vaule10*10));
+        switch(vaule10){
+        case 0: led5 = 0; led6 = 0; break;
+        case 1: led5 = 1; led6 = 0; break;
+        case 2: led5 = 0; led6 = 1; break;
+        case 3: led5 = 1; led6 = 1; break;
         }
-        else {
-          led = 0;
+        switch(vaule1){
+        case 0: led1 = 0; led2 = 0; led3 = 0; led4 = 0; break;
+        case 1: led1 = 1; led2 = 0; led3 = 0; led4 = 0; break;
+        case 2: led1 = 0; led2 = 1; led3 = 0; led4 = 0; break;
+        case 3: led1 = 1; led2 = 1; led3 = 0; led4 = 0; break;
+        case 4: led1 = 0; led2 = 0; led3 = 1; led4 = 0; break;
+        case 5: led1 = 1; led2 = 0; led3 = 1; led4 = 0; break;
+        case 6: led1 = 0; led2 = 1; led3 = 1; led4 = 0; break;
+        case 7: led1 = 1; led2 = 1; led3 = 1; led4 = 0; break;
+        case 8: led1 = 0; led2 = 0; led3 = 0; led4 = 1; break;
+        case 9: led1 = 1; led2 = 0; led3 = 0; led4 = 1; break;
         }
         wait(0.2); // 200 ms
     }