File content as of revision 0:68a3b91ee2a4:

/* mbed BuschA */
#include "mbed.h"
#include "HCSR04.h" //US-Sensor Abstand
#include "UP_US_Sensor.h"

lcd mylcd;
HCSR04 sonar(D2, D4);   //Echo, Trigger Pin
DigitalIn CableSwitch(D2); //PullUp auf Board, PA_10
PwmOut M1_PWM(D9);          
DigitalOut M1_DIR(D7);

int main()
{
  M1_PWM.period_ms(10);        // PWM-Periode
  M1_DIR = 1;                  // Vorwärts...
  M1_PWM = 0.8;                //Start-Speed
  float Abstand;
    while (1) 
    {

    Abstandsmessung();    //Abstand in cm 
    
        switch (Abstand)
        {
            case 50:     M1_PWM = 0.1; break;
            case 100:    M1_PWM = 0.3; break;
            case 150:    M1_PWM = 0.5; break;
            case 200:    M1_PWM = 0.7; break;
            case 250:    M1_PWM = 0.9; break;
            case 300:    M1_PWM = 1.0; break;
        }
    
    }
    thread_sleep_for(200); //Sleep = Warten...
}