How can I update the PWM duty cycle using DMA?

[kkhli.1]

I am controlling a DC motor, I want to synchronize it with another motor so I have to vary quickly the value of duty cycle, who can help me, I used the simple generation of pwm but it did not work

[MM..1]

Many examples on ... for example Custom Signal generation using PWM and DMA

[kkhli.1]

thnx for your reply