Which PWM outs are 'shared' on a cerbuino? i.e. have same frequency

[gwpt]

Hi,
I was reading in this post:

PWM on the FEZ Cerberus Mainboard

Aron, EXCELLENT explanation thank you! It clarify s what I said above. This is how it should have been explained and yes it needs to be in the Developers Guide, this is essential information for many when planning projects. For many, PWM is useless unless the frequency can be changed! Realistically, any situation where a Timer is shared, it should not be classed as PWM, instead maybe as Shared PWM because this is not true PWM as there is no ‘Modulation’ component to fixed frequency DC Pulses…

about how the frequency cannot be set independantly for some of the PWM output on the cerberus.
I am using a CerbuinoNet.

It is true for all the PWM outs? i.e. is it just 1 frequency for every PWM out?
Or can I set independant frequency of some? i.e. are they grouped?

Thanks
Guy

[Brett]

If only you quoted more of the article…

@Aron_Phillips

Here is a complete list of the timer to channel pins for the Cerbware:

//                         C6,A7,C7,A8,B0,B1,B5,B4,B3,B11,B10,A10,A9,A15, B8, B9
 #define STM32F4_PWM_TIMER { 8,14, 8, 1, 3, 3, 3, 3, 2,  2,  2,  1, 1,  2,  4,  4}
 #define STM32F4_PWM_CHNL  { 0, 0, 1, 0, 2, 3, 1, 0, 1,  3,  2,  2, 1,  0,  2,  3}
 #define STM32F4_PWM_PINS  {38, 7,39, 8,16,17,21,20,19, 27, 26, 10, 9, 15, 24, 25}

That’s the source. Any PWM that shares the timer number (eg pwm0 & 2; pwm4/5/6/7) cannot have an independent frequency.

[gwpt]

Ahhhh, ok, I get it now, I was being dumb and didn’t get that that code snippet at first.
Makes sense now.
Thanks Brett!