35 lines
1.1 KiB
Python
Executable File
35 lines
1.1 KiB
Python
Executable File
#!/usr/bin/python
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# This test assumes you are trying to control a motor through a DRV8833 motor
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# controller chip. This general approach should work for other motors as well.
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import lgpio
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import time
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# pin assignments
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gpio_pwm = 18 #MOTA1
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gpio_reverse = 16 #MOTA2
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gpio_notsleep = 24 #MSLEEP
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# parameters
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pwm_freq = 1000
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h = lgpio.gpiochip_open(0)
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try:
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lgpio.gpio_claim_output(h, gpio_reverse)
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lgpio.gpio_claim_output(h, gpio_notsleep)
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lgpio.gpio_write(h, gpio_reverse, 0) # low on reverse pin to turn off h-bridge MOTA2
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lgpio.gpio_write(h, gpio_notsleep, 1) # high on /sleep to enable both h-bridges
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while True:
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for pwm_level in range(0,100):
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lgpio.tx_pwm(h, gpio_pwm, pwm_freq, pwm_level)
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pwm_level += 10
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time.sleep(0.05)
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for pwm_level in range(100,0,-1):
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lgpio.tx_pwm(h, gpio_pwm, pwm_freq, pwm_level)
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pwm_level += 10
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time.sleep(0.05)
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finally:
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lgpio.gpio_write(h, gpio_notsleep, 1) # high on /sleep to disable
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lgpio.gpiochip_close(h) # Always close!
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