smd.iotkit.ch / Mbed OS 0-06-06-Uebung

6.6. Sobald kein magnetisches Feld mehr vorhanden, Akustisches Signal auslösen.

Diff: main.cpp

Revision:
1:4df8cc0c6b73
Parent:
0:76692683baea
--- a/main.cpp	Sun Apr 26 13:40:01 2015 +0000
+++ b/main.cpp	Fri Feb 01 10:14:53 2019 +0000
@@ -3,15 +3,15 @@
 #include "mbed.h"
 
 // Hall Sensor
-AnalogIn hallSensor( A2 );
+AnalogIn hallSensor( A3 );
 // Summer (Buzzer)
-PwmOut speaker( D7 );
+PwmOut speaker( D3 );
 
 int main()
 {
     while(1) 
     {
-        if  ( hallSensor.read() > 0.1f ) 
+        if  ( hallSensor.read() > 0.6f ) 
         {
             // Polizei Sirene
             speaker.period( 1.0 / 969.0 );      // 969 = Tonfrequenz in Hz