ESP8266 PWM Signal frequency

Using Arduino LEDs and Multiplexing
#1

Hi,

Greetings!

I have just started development on ESP8266 platform using arduino. I am trying to generate PWM signal (50% duty cycle) in range of 20KHz to 50KHz.

Till now I am able to generate 20KHz only. Please note that I have tried with analogWrite, ticker and timer1.

Kindly suggest me proper method to generate PWM signal of desired frequency.

Regards,

Dinesh

#2

Hi,

Greetings!

I have just started development on ESP8266 platform using arduino. I am trying to generate PWM signal (50% duty cycle) in range of 20KHz to 50KHz.

Till now I am able to generate 20KHz only. Please note that I have tried with analogWrite, ticker and timer1.

Kindly suggest me proper method to generate PWM signal of desired frequency.

Regards,

Dinesh

#3

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2018-02-12_22-17-24.jpg|707x266

#4

I am trying to generate PWM signal (50% duty cycle) in range of 20KHz to 50KHz.

50%? Try tone();

Or

Try the Timer1 library.

Example: https://github.com/PaulStoffregen/TimerOne/blob/master/examples/FanSpeed/FanSpeed.pde

#5

Exactly. But look at analogWriteFreq() for the ESP8266.

#6

@dinesh4761, do not cross-post. Threads merged.

#7

dinesh4761: I am trying to generate PWM signal (50% duty cycle)

If the duty cycle is always 50% then it is not a "PWM" signal. PWM is short for "Pulse Width Modulated". If the duty cycle is always 50% then there is no modulation. What you meant to say was "FM", Frequency Modulated.