87 lines
2.3 KiB
Python
87 lines
2.3 KiB
Python
import board
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import pwmio
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import random
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import time
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import microcontroller
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import os
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import sys
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import random
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exponents = [
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2,
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3,
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4,
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5,
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6,
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7,
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]
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freqs = [int(10**f) for f in exponents]
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top = 65536
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den = 10
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duties = [32767, 65535, 1, 65534, 0, 0]
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freq_duration = 1.2
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duty_duration = 0.2
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print("\n\n")
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board_name = sys.implementation[2]
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pins = {
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"Feather RP2040": (("D4", ""),),
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"RP2040-Zero": (("GP15", ""),),
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"Grand Central": (("D51", "TCC"), ("A15", "TC")),
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"Metro M0": (("A2", "TC"), ("A3", "TCC")),
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"ESP32-S3-DevKit": (("IO6", ""),), # marked D5 on board for XIAO-ESP32-s3
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"Feather ESP32-S2": (("D9", ""),),
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"XIAO nRF52840": (("D9", ""),),
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}
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for board_key in pins:
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if board_key in board_name:
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pins_to_use = pins[board_key]
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break
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while True:
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for pin_name, pin_type in pins_to_use:
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pin = getattr(board, pin_name)
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print('title="', end="")
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print(f"{board_name} at {microcontroller.cpu.frequency} Hz, pin {pin_name}", end="")
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if len(pin_type) > 0:
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print(f" ({pin_type})", end="")
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print('",')
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print(f'subtitle="{freq_duration:0.1f}s per frequency",')
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print(f'version="{sys.version}",')
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print("freq_calls=", end="")
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pwm = pwmio.PWMOut(pin, variable_frequency=True)
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t0 = time.monotonic()
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duty_time = t0 + duty_duration
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print("(", end="")
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offset = 0
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increment = 1
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for freq in freqs:
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i = 0
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try:
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pwm.frequency = freq
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except ValueError:
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break
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freq_time = t0 + freq_duration
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duty_time = t0 + duty_duration
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j = 0
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while time.monotonic() < freq_time:
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duty = duties[j]
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pwm.duty_cycle = duty
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while time.monotonic() < duty_time and time.monotonic() < freq_time:
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pass
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j += 1
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j = min(j, len(duties) - 1)
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duty_time += duty_duration
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i += 1
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if time.monotonic() > freq_time:
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break
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t0 = freq_time
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print(f"({freq}, {i / freq_duration:.0f}), ", end="")
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print(")")
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print("done.")
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pwm.deinit()
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time.sleep(5)
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