LPC2148 PWM5 läuft nicht

  PINSEL0 &= ~(2 << (10));  //clear bits related to P0.21

  PINSEL0 |=  (1 << (10));  //connect signal PWM5 to P0.21 (second alternative function)

  PWMPR  = 0x0000;          //set prescale to 0

  PWMMCR = 0x0002;          //counter resets on MR0 match (period time)

  PWMMR0 = 5000;   //MR0 = period cycle time

  PWMMR5 = 2500;   //MR5 = duty cycle control

  PWMLER |= (1<<0)|(1<<5); //latch new values for MR0 and MR5

  PWMPCR &= ~(1<<5);

  PWMPCR |= (1<<13);

  PWMTCR = 0x09;                   //enable PWM and Counter