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41 lines
1.0 KiB
Python
41 lines
1.0 KiB
Python
# PWM Control Example
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#
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# This example shows how to do PWM with your OpenMV Cam.
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#
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#
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# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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# !!! NOTE !!!
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# THIS IS THE ONLY FREE PIN WHEN USING THE VISION SHIELD.
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# DO NOT USE ANY OTHER PIN WHILE USING THE VISION SHIELD.
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# PWM7/PH15
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# !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
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import time
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from pyb import Pin, Timer
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class PWM:
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def __init__(self, pin, tim, ch):
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self.pin = pin
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self.tim = tim
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self.ch = ch
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pwms = {
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# 'PWM1' : PWM('PA8', 1, 1), # TIM1 is Reserved.
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"PWM2": PWM("PC6", 3, 1),
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"PWM3": PWM("PC7", 3, 2),
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# 'PWM4' : PWM('PG7', 0, 0), # HRTIM not supported.
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"PWM5": PWM("PJ11", 8, 2),
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"PWM6": PWM("PK1", 8, 3),
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"PWM7": PWM("PH15", 8, 3),
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}
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# Generate a 1KHz square wave with 50% cycle on the following PWM.
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for k, pwm in pwms.items():
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tim = Timer(pwm.tim, freq=1000) # Frequency in Hz
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ch = tim.channel(pwm.ch, Timer.PWM, pin=Pin(pwm.pin), pulse_width_percent=50)
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while True:
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time.sleep_ms(1000)
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