# Python env   : MicroPython v1.23.0
# -*- coding: utf-8 -*-
# @Time    : 2026/3/12 下午4:12
# @Author  : hogeiha
# @File    : main.py
# @Description : CCS811传感器测试 读取eCO2和TVOC数据 配置驱动模式 软件重置传感器

# ======================================== 导入相关模块 =========================================

from machine import I2C, Pin, SoftI2C
import time
from ccs811 import CCS811

# ======================================== 全局变量 ============================================

# ======================================== 功能函数 ============================================

# ======================================== 自定义类 ============================================

# ======================================== 初始化配置 ===========================================

time.sleep(3)
print("FreakStudio: CCS811 sensor test - read eCO2 and TVOC data, configure drive mode, software reset sensor")
# 初始化I2C总线（适配Raspberry Pi Pico，I2C 0，SCL=Pin(5), SDA=Pin(4)）
i2c = I2C(0, scl=Pin(5), sda=Pin(4), freq=100000)
#    i2c = SoftI2C(scl=Pin(5), sda=Pin(4), freq=100000)
# 扫描I2C总线上的设备并打印地址
print(f"I2C scanned device addresses: {[hex(addr) for addr in i2c.scan()]}")
# 创建CCS811传感器实例
ccs811 = CCS811(i2c)

# ========================================  主程序  ============================================

try:
    # 初始化CCS811传感器
    ccs811.setup()
    time.sleep(2)  # Wait for stabilization after initialization

    # 检查APP是否有效
    app_valid = ccs811.app_valid()
    print(f"
APP validity: {app_valid}")

    # 检查传感器是否存在错误
    has_error = ccs811.check_for_error()
    print(f"Sensor error status: {has_error}")

    # 获取传感器基线值
    baseline = ccs811.get_base_line()
    print(f"Sensor baseline value: 0x{baseline:04X}")

    # 修改驱动模式为1秒/次
    print("
Set drive mode to 1 second per reading...")
    ccs811.set_drive_mode(1)
    time.sleep(1)

    # 循环读取eCO2和TVOC数据（读取5次）
    print("
Start reading sensor data (5 times):")
    for i in range(5):
        co2 = ccs811.read_eCO2()
        time.sleep(2)  # Wait according to drive mode
        tvoc = ccs811.read_tVOC()
        print(f"Reading {i+1} - eCO2: {co2} ppm, TVOC: {tvoc} ppb")
        time.sleep(2)  # Wait according to drive mode

    # 执行传感器软件重置
    print("
Perform sensor software reset...")
    ccs811.reset()
    time.sleep(2)

    # 重置后重新初始化并读取一次数据
    print("
Re-initialize after reset...")
    ccs811.setup()
    time.sleep(2)
    co2 = ccs811.read_eCO2()
    tvoc = ccs811.read_tVOC()
    print(f"Reading after reset - eCO2: {co2} ppm, TVOC: {tvoc} ppb")

except ValueError as e:
    print(f"Runtime error: {e}")
except Exception as e:
    print(f"Unknown error: {e}")

MIT License

Copyright (c) 2026 FreakStudio

Permission is hereby granted, free of charge, to any person obtaining a copy
of this software and associated documentation files (the "Software"), to deal
in the Software without restriction, including without limitation the rights
to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
copies of the Software, and to permit persons to whom the Software is
furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
SOFTWARE.