PWM frequency

[L.R.A 78]

I would like to know what is the frequency of the pwm when i use analogWrite() with launchpad msp430g2553 and with the stelarpad.

 

and how can i set the frequency?

 

in know issues it's listed that the analogWrite() output half the expected frequency and only adjusts pwm 0-50%. is this still true?

[energia 485]

The frequency of the PWM signal is approximately 490 Hz as per Wiring / Arduino spec. For the msp430 you can use the API analogFrequency(uint32_t freq). This function is not yet implemented on the Stellarpad.

The analogWrite() issue you are refferin to has been fix in Energia 0101E0009.

[L.R.A 78]

The frequency of the PWM signal is approximately 490 Hz as per Wiring / Arduino spec. For the msp430 you can use the API analogFrequency(uint32_t freq). This function is not yet implemented on the Stellarpad.

The analogWrite() issue you are refferin to has been fix in Energia 0101E0009.

 

analogFrequency (); works in hz? like for 20khz it's analogFrequency (20000);?

it still isn't hadded in keywords (doesn't change color)

 

for the stelarpad i have the compiler edited to have this fuction:

PWMwrite(256,duty,freq)

frequency is in hertz

256 is the max value of duty, the resolution of duty.