Hello,
Actually i am working on brushless dc motor control by MCB4357 Development board. I must write program which generate 4 signal PWM with these parameter :
Frequency 400 Hz Amplitude 3.3V Duty cycle 40 %
but unfortunately i don't found any library for MCB4357 to generate PWM Signal
You haven't found any library?
Well, I guess that is the reason why the chip manufacturer invested time to document the different peripherials - no one can write any library without the processor documentation. Which, in this case, also means that you can write your own library if you want to.
Which, in fact, was how you yourself described your assignment:
"I must write..."