Stellaris LM4F120H5QR PWM configuration problem

Thank you Markel, i am aware of the TivaWare library but i wanted to understand why it would not work. Finally i got it to work after re-reading the datasheet, i was missing the GPIO output pin configuration :).

void
configure_pwm_PF1()
{
  SYSCTL->RCGCTIMER  |=     0x01;   //Enable TIMER0 Module
  SYSCTL->RCGCGPIO   |=   1 << 5;   //Clock GPIOF
 
  GPIOF->AFSEL       |=     0x02;   //Select alternate function on pin PF1
  GPIOF->PCTL        |=     0x70;   //Select T0CCP1 function for pin PF1
  GPIOF->DEN         |=   1 << 1;   // PF1 is digital

  unsigned ctl = TIMER0->CTL;
  ctl &= ~0x00000100;
  TIMER0->CTL        =   ctl;       //Ensure the timer (Timer B) is disabled before making changes
  TIMER0->CFG        |=     0x04;   //Select the 16 bit timer configuration
  TIMER0->TBMR       |=     0x0A;   //TnAMS = 0x1, TnCMR = 0x0, TnMR field = 0x02
  TIMER0->CTL        &=   0 <<14;   //Timer B output is not inverted
  TIMER0->TBPR        =   0x007A;   //Prescaler value
  TIMER0->TBILR       =   0x1200;   //Load timer start value
  TIMER0->TBPMR       =   0x003D;   //load the prescale match value
  TIMER0->TBMATCHR    =   0x0900;   //load the match value
  TIMER0->CTL        |=   1 << 8;   //Enable timer B PWM generation
}