drag and drop this file to the CIRCUITPY directory

code.py

""" Example for using the SGP30 and PM25 with CircuitPython
    and the Adafruit library """

import digitalio
import busio
import adafruit_sgp30
import board
import adafruit_pm25
from tool import show_SGP, show_SGP_baseline  # for SGP30
from tool import show_PM25  # for PMSA003
from tool import color_chase_1  # for NeoPixel
from tool import play_file  # for AudioOut


# 設定LED顏色
RED = (255, 0, 0)
GREEN = (0, 255, 0)
OFF = (0, 0, 0)

i2c_bus = busio.I2C(board.SCL, board.SDA, frequency=100000)

# Create library object on I2C port
sgp30 = adafruit_sgp30.Adafruit_SGP30(i2c_bus)
print("SGP30 serial #", [hex(i) for i in sgp30.serial])
sgp30.iaq_init()
# sgp30.set_iaq_baseline(co2eq_base, tvoc_base)
# elapsed_sec = 0

reset_pin = None
uart = busio.UART(board.TX, board.RX, baudrate=9600)
pm25 = adafruit_pm25.PM25_UART(uart, reset_pin)

# Enable the speaker
spkrenable = digitalio.DigitalInOut(board.SPEAKER_ENABLE)
spkrenable.direction = digitalio.Direction.OUTPUT
spkrenable.value = True

# Make the 2 input buttons
buttonA = digitalio.DigitalInOut(board.BUTTON_A)
buttonA.direction = digitalio.Direction.INPUT
buttonA.pull = digitalio.Pull.DOWN

buttonB = digitalio.DigitalInOut(board.BUTTON_B)
buttonB.direction = digitalio.Direction.INPUT
buttonB.pull = digitalio.Pull.DOWN


while True:
    # 顯示 SGP30數據
    show_SGP(sgp30)

    # 依據SGP數據控制LED顯示
    color_chase_1(OFF, 0, 0.1)
    if sgp30.TVOC < 10:
        color_chase_1(RED, 0, 0.1)
    else:
        color_chase_1(GREEN, 0, 0.1)

    # elapsed_sec += 1
    # 顯示 SGP30基準數據
    # elapsed_sec = show_SGP_baseline(elapsed_sec, sgp30)

    # 讀取 PMSA003數據
    try:
        aqdata = pm25.read()
        # print(aqdata)
    except RuntimeError:
        print("Unable to read from sensor, retrying...")
        continue

    # for plotter
    print((sgp30.eCO2, sgp30.TVOC,  # sgp30.H2, sgp30.Ethanol,
            aqdata["particles 03um"],
            aqdata["particles 05um"],
            aqdata["particles 10um"],
            aqdata["particles 25um"],
            aqdata["particles 50um"],
            aqdata["particles 100um"]))

    # 顯示 PMSA003數據
    show_PM25(aqdata)

    # 依據PM25數據控制LED顯示
    color_chase_1(OFF, 9, 0.1)
    if aqdata["pm25 standard"] < 50:
        color_chase_1(RED, 9, 0.1)
    else:
        color_chase_1(GREEN, 9, 0.1)

    # The two files assigned to buttons A & B
    audiofiles = ["rimshot.wav", "laugh.wav"]

    # 按下按鈕[A/B] to play music
    if buttonA.value:
        play_file(audiofiles[0])
    if buttonB.value:
        play_file(audiofiles[1])
# End of Loop

drag and drop this file to the CIRCUITPY directory