Diff: main.cpp

Revision:

1:da458f1db225

Parent:

0:c8b89a6e4c0e

Child:

2:77448d13dd0d

--- a/main.cpp	Thu Oct 18 15:57:42 2018 +0000
+++ b/main.cpp	Fri Oct 19 04:09:07 2018 +0000
@@ -1,26 +1,53 @@
 #include "mbed.h"
+AnalogIn analog_value(A5);
+BusOut vu_leds = (PA_3,PA_2,PA_10,PB_3,PB_5,PB_4,PB_10,PB_8);
+BusOut digit1=(PA_9,PC_7,PB_6,PA_7);
+BusOut digit2=(PB_0,PA_4,PA_1,PA_0);
+DigitalIn user(USER_BUTTON);
+DigitalOut led(LED1);
+long map(long x, long in_min, long in_max, long out_min, long out_max)
+{
+    return (x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min;
+}
+double power(int x,int y)
+{
+    int z=x;
+    while(y>0) {
+        z=z*x;
+        y--;
+    }return z;
+}
+void display_vu(unsigned int x)
+{
+    int out=power(2,x)-1;
+    vu_leds=out;
+}
+void display_digits(int x)
+{
+    digit1=x/10;
+    digit2=x%10;
 
-AnalogIn analog_value(A0);
-
-DigitalOut led(LED1);
-
+}
 int main()
 {
-    float meas_r;
-    float meas_v;
-
+    float adc1;
+    int volt1;
+    int volum;
+    bool mode;
     while(1) {
 
-        meas_r = analog_value.read(); // Read the analog input value (value from 0.0 to 1.0 = full ADC conversion range)
-        meas_v = meas_r * 3300; // Converts value in the 0V-3.3V range
-        
-        // LED is ON when the value is above 2V
-        if (meas_v > 2000) {
-            led = 1; // LED ON
+        adc1 = analog_value.read(); // Read the analog input value (value from 0.0 to 1.0 = full ADC conversion range)
+        volt1 = map(adc1,0,1.0,0,33); // Converts value in the 0V-3.3V range
+        volum = map(adc1,0,1.0,0,8);
+        if(mode) {
+            display_vu(volum);
         } else {
-            led = 0; // LED OFF
+            display_digits(volt1);
         }
-
+        if(user) {
+            mode=!mode;
+            while(user);
+        }
         wait(0.2); // 200 millisecond
     }
 }