p7p8p9以外的io口如何输出PWM?直接将Timer里的第一参数改为定时器1会报错

[g1vn_1646821929]

[kidswong999]

如果涉及代码，需要报错提示与全部代码文本，请注意不要贴代码图片

[g1vn_1646821929]

@kidswong999 P7P8P9以外的Iio口如何输出PWM

[kidswong999]

timer1 用不了，因为摄像头采集用了timer1

import sensor, image, time
from pyb import Pin, Timer

sensor.reset()
sensor.set_pixformat(sensor.RGB565)
sensor.set_framesize(sensor.QVGA)
sensor.skip_frames(time = 2000)

tim = Timer(2, freq=1000) # Frequency in Hz
ch3 = tim.channel(3, Timer.PWM, pin=Pin("P4"), pulse_width_percent=50)

clock = time.clock()
while(True):
    clock.tick()
    img = sensor.snapshot()
    print(clock.fps())