STM32F0xx_TIM输出PWM配置:
http://blog.csdn.net/ybhuangfugui/article/details/51581689
STM32F10x_TIM输出PWM配置:
http://blog.csdn.net/ybhuangfugui/article/details/51417207
STM32F4_TIM输出PWM波形(可调频率、占空比):
http://blog.csdn.net/ybhuangfugui/article/details/51867044