PWM sine gen two timers idea

[MM..1]

Hi, req is generate sine wave and manage frequency precisely . My design require range 2Hz to 10Hz with for example step 0,002Hz.

My idea is one PWM timer for sine with same table for exampel 10bit. 

Second linked timer for manage one sample time on PWM and regulate frequency precisely.

How timers on F030 can be linked this way or other idea?

Now my timer PWM is TIM3 and not linked TIM16 manage angle calcs and new CCR on TIM3.

[Sarra.S]

Hello @MM..1, 

Your idea is valid, you can use 2 timers, one for generating the PWM signal and another for managing the sample time and frequency, however, TIM16 and TIM3 cannot be linked by configuring the master/slave mode, there are no internal connection between these 2 timers

check TIMx internal trigger connection in your product RM:

[MM..1]

Thank you Sara, but can you explain or show example how use two timers for example for generate 2.2222Hz and switch it to 2.2242Hz (this is required sine wave freq no PWM)