树莓派PICO使用bmp280获取数据，cv可用~，拿走不谢

最新推荐文章于 2025-11-05 17:32:07 发布

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最新推荐文章于 2025-11-05 17:32:07 发布 · 575 阅读

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#python

该文提供了一个指南，详细介绍了如何在树莓派PICO上使用Micropython库与BMP280传感器进行通信，包括传感器的电源模式、采样设置和I2C配置。通过示例代码展示了如何初始化传感器、读取数据以及设置不同的使用场景。

参考连接：https://electrocredible.com/bmp280-raspberry-pi-pico-micropython-guide/

连线方式：

库文件：

请记着将他保存在树莓派PICO中，否则找不到哦~

from micropython import const
from ustruct import unpack as unp

# Power Modes
BMP280_POWER_SLEEP = const(0)
BMP280_POWER_FORCED = const(1)
BMP280_POWER_NORMAL = const(3)

BMP280_SPI3W_ON = const(1)
BMP280_SPI3W_OFF = const(0)

BMP280_TEMP_OS_SKIP = const(0)
BMP280_TEMP_OS_1 = const(1)
BMP280_TEMP_OS_2 = const(2)
BMP280_TEMP_OS_4 = const(3)
BMP280_TEMP_OS_8 = const(4)
BMP280_TEMP_OS_16 = const(5)

BMP280_PRES_OS_SKIP = const(0)
BMP280_PRES_OS_1 = const(1)
BMP280_PRES_OS_2 = const(2)
BMP280_PRES_OS_4 = const(3)
BMP280_PRES_OS_8 = const(4)
BMP280_PRES_OS_16 = const(5)

# Standby settings in ms
BMP280_STANDBY_0_5 = const(0)
BMP280_STANDBY_62_5 = const(1)
BMP280_STANDBY_125 = const(2)
BMP280_STANDBY_250 = const(3)
BMP280_STANDBY_500 = const(4)
BMP280_STANDBY_1000 = const(5)
BMP280_STANDBY_2000 = const(6)
BMP280_STANDBY_4000 = const(7)

# IIR Filter setting
BMP280_IIR_FILTER_OFF = const(0)
BMP280_IIR_FILTER_2 = const(1)
BMP280_IIR_FILTER_4 = const(2)
BMP280_IIR_FILTER_8 = const(3)
BMP280_IIR_FILTER_16 = const(4)

# Oversampling setting
BMP280_OS_ULTRALOW = const(0)
BMP280_OS_LOW = const(1)
BMP280_OS_STANDARD = const(2)
BMP280_OS_HIGH = const(3)
BMP280_OS_ULTRAHIGH = const(4)

# Oversampling matrix
# (PRESS_OS, TEMP_OS, sample time in ms)
_BMP280_OS_MATRIX = [
    [BMP280_PRES_OS_1, BMP280_TEMP_OS_1, 7],
    [BMP280_PRES_OS_2, BMP280_TEMP_OS_1, 9],
    [BMP280_PRES_OS_4, BMP280_TEMP_OS_1, 14],
    [BMP280_PRES_OS_8, BMP280_TEMP_OS_1, 23],
    [BMP280_PRES_OS_16, BMP280_TEMP_OS_2, 44]
]

# Use cases
BMP280_CASE_HANDHELD_LOW = const(0)
BMP280_CASE_HANDHELD_DYN = const(1)
BMP280_CASE_WEATHER = const(2)
BMP280_CASE_FLOOR = const(3)
BMP280_CASE_DROP = const(4)
BMP280_CASE_INDOOR = const(5)

_BMP280_CASE_MATRIX = [
    [BMP280_POWER_NORMAL, BMP280_OS_ULTRAHIGH, BMP280_IIR_FILTER_4, BMP280_STANDBY_62_5],
    [BMP280_POWER_NORMA