adafruit-circuitpython-ds1841 1.0.18

介绍

CircuitPython库，用于Maxim DS1841 I2C对数电阻

依赖项

此驱动程序依赖于

• Adafruit CircuitPython

• 总线设备

• 注册

请确保所有依赖项都在CircuitPython文件系统中可用。这可以通过下载Adafruit库和驱动程序包轻松实现。

从PyPI安装

在支持GNU/Linux的系统（如Raspberry Pi）上，您可以从PyPI本地安装驱动程序。为当前用户安装

pip3 install adafruit-circuitpython-ds1841

为系统范围内安装（在某些情况下可能需要这样做）

sudo pip3 install adafruit-circuitpython-ds1841

在当前项目的虚拟环境中安装

mkdir project-name && cd project-name
python3 -m venv .venv
source .venv/bin/activate
pip3 install adafruit-circuitpython-ds1841

用法示例

from time import sleep
import board
import busio
import adafruit_ds1841
from analogio import AnalogIn

####### NOTE ################
# this example will not work with Blinka/rasberry Pi due to the lack of analog pins.
# Blinka and Raspberry Pi users should run the "ds1841_blinka_simpletest.py" example

# WIRING:
# 1 Wire connecting  VCC to RH to make a voltage divider using the
#   internal resistor between RH and RW
# 2 Wire connecting RW to A0

i2c = busio.I2C(board.SCL, board.SDA)
ds1841 = adafruit_ds1841.DS1841(i2c)
wiper_output = AnalogIn(board.A0)

while True:

    ds1841.wiper = 127
    print("Wiper set to %d"%ds1841.wiper)
    voltage = wiper_output.value
    voltage *= 3.3
    voltage /= 65535
    print("Wiper voltage: %.2f"%voltage)
    print("")
    sleep(1.0)

    ds1841.wiper = 0
    print("Wiper set to %d"%ds1841.wiper)
    voltage = wiper_output.value
    voltage *= 3.3
    voltage /= 65535
    print("Wiper voltage: %.2f"%voltage)
    print("")
    sleep(1.0)

    ds1841.wiper = 63
    print("Wiper set to %d"%ds1841.wiper)
    voltage = wiper_output.value
    voltage *= 3.3
    voltage /= 65535
    print("Wiper voltage: %.2f"%voltage)
    print("")
    sleep(1.0)

文档

此库的API文档可在Read the Docs上找到。

有关构建库文档的信息，请参阅此指南。

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