AS7343光谱传感器MicroPython读取颜色通道值

以下是使用AS7343光谱传感器读取颜色通道值的MicroPython代码示例：

from machine import I2C
import time

# AS7343 I2C地址
AS7343_I2C_ADDRESS = 0x39

# AS7343命令
AS7343_CMD_CONTROL = 0x00
AS7343_CMD_STATUS = 0x13
AS7343_CMD_CONTROL_SELECT = 0x01
AS7343_CMD_ENABLE = 0x00
AS7343_CMD_GAIN = 0x01
AS7343_CMD_INT_TIME = 0x02
AS7343_CMD_CHANNEL_DATA_START = 0x05

# 初始化I2C
i2c = I2C(0, I2C.MASTER, baudrate=100000)

# 选择AS7343
i2c.writeto(AS7343_I2C_ADDRESS, bytearray([AS7343_CMD_CONTROL, AS7343_CMD_CONTROL_SELECT]))

# 启用AS7343
i2c.writeto(AS7343_I2C_ADDRESS, bytearray([AS7343_CMD_ENABLE, 0x03]))

# 设置增益和积分时间
i2c.writeto(AS7343_I2C_ADDRESS, bytearray([AS7343_CMD_GAIN, 0x00]))
i2c.writeto(AS7343_I2C_ADDRESS, bytearray([AS7343_CMD_INT_TIME, 0x00]))

# 读取颜色通道值
while True:
    # 等待数据准备好
    while i2c.readfrom(AS7343_I2C_ADDRESS, 1)[0] != 0x07:
        pass

    # 读取颜色通道数据
    data = i2c.readfrom_mem(AS7343_I2C_ADDRESS, AS7343_CMD_CHANNEL_DATA_START, 8)

    # 转换为16位无符号整数
    channel0 = data[1] << 8 | data[0]
    channel1 = data[3] << 8 | data[2]
    channel2 = data[5] << 8 | data[4]
    channel3 = data[7] << 8 | data[6]

    # 打印颜色通道值
    print("Channel 0: ", channel0)
    print("Channel 1: ", channel1)
    print("Channel 2: ", channel2)
    print("Channel 3: ", channel3)

    # 等待一段时间再读取
    time.sleep(0.5)

这段代码使用MicroPython的I2C模块向AS7343光谱传感器发送命令和读取数据。首先选择AS7343并启用它，然后设置增益和积分时间。然后在一个循环中，等待数据准备好，读取颜色通道数据，将其转换为16位无符号整数，然后打印出来。最后等待一段时间再读取。