Stellaris Launchapd is a one of latest ARM Cortex-M4 evaluation platforms from TI. Jokkebk came out with a nice PWM tutorial for this great platform. It would seem no problem to do PWM as in any other MCU. Problem is that there is no PWM unit on Launchpad. Everything is played timer functionality.
It took over eight hours to reach goal as each line of code was double checked using datasheet. It could be easier if there were better documentation. So thanks to this effort any of you can do PWM much faster using prepared template and thoughts.