8000 lib: Add Arduino Opta expansion protocol support. · arduino/arduino-lib-mpy@ec4af64 · GitHub
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lib: Add Arduino Opta expansion protocol support.
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‎lib/opta/example.py

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# This file is part of the blueprint package.
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# Copyright (c) 2024 Arduino SA
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# This Source Code Form is subject to the terms of the Mozilla Public
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# License, v. 2.0. If a copy of the MPL was not distributed with this
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# file, You can obtain one at https://mozilla.org/MPL/2.0/.
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import opta
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import logging
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if __name__ == "__main__":
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logging.basicConfig(
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datefmt="%H:%M:%S",
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format="%(asctime)s.%(msecs)03d %(message)s",
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level=logging.INFO # Switch to DEBUG to see raw commands
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)
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opta = opta.Opta(bus_id=3)
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# enum_devices initializes the bus, resets all expansions, and returns a list of
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# detected expansions. NOTE: keep a reference to the list of expansion for later
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# use, as every time this function is called it restarts the enumeration process.
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for e in opta.enum_devices():
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print("")
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logging.info(f"Expansion type: {e.type} address: 0x{e.addr:02X} name: {e.name}")
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# Read firmware version.
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major, minor, patch = e.firmware_version()
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logging.info(f"Firmware Version Major: {major} Minor: {minor} Patch: {patch}")
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# Read product ID.
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pid = e.product_id()
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logging.info("Product ID bytes: " + ", ".join(["0x%02X" % a for a in pid[0:8]]))
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if e.type == "digital":
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# Write digital pins. If the default state and timeout (in milliseconds) are
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# also specified, the pins will revert to the specified default state after
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# the timeout expires.
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e.digital(pins=0b10101010, default=0b01010101, timeout=3000)
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# If no args are specified, digital() returns all digital pins.
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pins = e.digital()
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logging.info(f"Digital pins: 0b{pins:08b}")
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# Read analog pins.
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logging.info("Analog pin [0 ]: %d" % e.analog(channel=0))
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logging.info("Analog pins [0..7]: " + str(e.analog()))
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if e.type == "analog":
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# Configure LEDs on Opta Analog
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e.digital(pins=0b10011001)
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# Configure analog channels. Note almost all of the possible args are used here
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# for demonstration purposes, however only a few are actually required (such as
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# the channel type and mode). Most of the other args have reasonable defaults.
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# Configure channel (0) as PWM.
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e.analog(channel=0, channel_type="pwm", period=1000, duty=50, default_period=500)
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# Configure channel (2) as DAC.
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e.analog(channel=2, channel_type="dac", channel_mode="voltage", value=7540)
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# Configure channel (3) as ADC.
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e.analog(channel=3, channel_type="adc", channel_mode="voltage", pulldown=True,
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rejection=False, diagnostic=False, average=0, secondary=False)
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# Configure channel (4) as RTD.
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e.analog(channel=4, channel_type="rtd", use_3_wire=False, current_ma=1.2, update_time=0)
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# Configure channel (5) as digital input.
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e.analog(channel=5, channel_type="din", comparator=True, inverted=False, filtered=True,
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scale=False, sink=1, threshold=9, debounce_mode="simple", debounce_time=24)
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# Read ADC channel (3).
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# This should print 65535 if channels 2 and 3 are connected.
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logging.info("ADC channel [3 ]: %d" % e.analog(channel=3))
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# Read all analog channels.
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logging.info("Analog channels [0..7]: " + str(e.analog()))
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# Read RTD channel (4).
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logging.info("RTD channel [4 ]: %.1f ohm" % e.analog(channel=4))
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# Read DIN channel (5).
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logging.info("DIN channel [5 ]: %d" % e.analog(channel=5))
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# Read all analog channels.
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logging.info("Analog channels [0..7]: " + str(e.analog()))
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# Re-configure channel (2) as DAC.
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e.analog(channel=2, channel_type="dac", channel_mode="voltage", value=3770)
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logging.info("ADC channel [3 ]: %d" % e.analog(channel=3))

‎lib/opta/manifest.py

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metadata(
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description="Modules for Arduino Opta.",
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version="0.0.1",
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)
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module("opta.py")

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