PWM Parameters

[jimcraig47]

from machine import Pin, PWM
freq = 1000
led = PWM(Pin(10), freq)

When I run this code on an ESP32 it runs fine. Trying to understand why when I run the same code on a Raspberry Pi Pico I get the "TypeError: function takes 1 positional arguments but 2 were given" for the last line.

[robert-hh]

That is indeed an inconsistency. At the RP2 port the PWM constructor does not accept additional arguments. You have to do it step-by-step, e.g.:

from machine import Pin, PWM
freq = 1000
led = PWM(Pin(10))
led.freq(freq)
led.duty_u16(32768)

[jimcraig47]

Thanks

[ned-pcs]

It currently allows one positional argument (freq), and several keyword arguments (duty_u16, duty_ns, and invert):

pwm1 = machine.PWM(machine.Pin(28), freq=1000, invert=False)