树莓派使用 Nokia 5110 屏幕显示网速温度

Nokia 5110
长上图这样。

驱动
PCD8544

资料
Google 一搜各种博客都有介绍，毕竟我不是学硬件的，底层什么的就不说了。好玩就行。

引脚

rst:外部复位引脚
ce：显示屏使能引脚
dc：数据/命令引脚
din：串行数据输入端
clk：串行时钟输入端
vcc：电源引脚
bl：亮度调节
gnd：接地

先看看驱动代码

修改自(Adafruit)，这里用的是 BCM 编码。


# coding:utf-8

import time

import Adafruit_GPIO as GPIO

import Adafruit_GPIO.SPI as SPI



LCDWIDTH = 84

LCDHEIGHT = 48

ROWPIXELS = LCDHEIGHT//6

PCD8544_POWERDOWN = 0x04

PCD8544_ENTRYMODE = 0x02

PCD8544_EXTENDEDINSTRUCTION = 0x01

PCD8544_DISPLAYBLANK = 0x0

PCD8544_DISPLAYNORMAL = 0x4

PCD8544_DISPLAYALLON = 0x1

PCD8544_DISPLAYINVERTED = 0x5

PCD8544_FUNCTIONSET = 0x20

PCD8544_DISPLAYCONTROL = 0x08

PCD8544_SETYADDR = 0x40

PCD8544_SETXADDR = 0x80

PCD8544_SETTEMP = 0x04

PCD8544_SETBIAS = 0x10

PCD8544_SETVOP = 0x80

FONT = {

  ' ': [0x00, 0x00, 0x00, 0x00, 0x00],

  '!': [0x00, 0x00, 0x5f, 0x00, 0x00],

  '"': [0x00, 0x07, 0x00, 0x07, 0x00],

  '#': [0x14, 0x7f, 0x14, 0x7f, 0x14],

  '$': [0x24, 0x2a, 0x7f, 0x2a, 0x12],

  '%': [0x23, 0x13, 0x08, 0x64, 0x62],

  '&': [0x36, 0x49, 0x55, 0x22, 0x50],

  "'": [0x00, 0x05, 0x03, 0x00, 0x00],

  '(': [0x00, 0x1c, 0x22, 0x41, 0x00],

  ')': [0x00, 0x41, 0x22, 0x1c, 0x00],

  '*': [0x14, 0x08, 0x3e, 0x08, 0x14],

  '+': [0x08, 0x08, 0x3e, 0x08, 0x08],

  ',': [0x00, 0x50, 0x30, 0x00, 0x00],

  '-': [0x08, 0x08, 0x08, 0x08, 0x08],

  '.': [0x00, 0x60, 0x60, 0x00, 0x00],

  '/': [0x20, 0x10, 0x08, 0x04, 0x02],

  '0': [0x3e, 0x51, 0x49, 0x45, 0x3e],

  '1': [0x00, 0x42, 0x7f, 0x40, 0x00],

  '2': [0x42, 0x61, 0x51, 0x49, 0x46],

  '3': [0x21, 0x41, 0x45, 0x4b, 0x31],

  '4': [0x18, 0x14, 0x12, 0x7f, 0x10],

  '5': [0x27, 0x45, 0x45, 0x45, 0x39],

  '6': [0x3c, 0x4a, 0x49, 0x49, 0x30],

  '7': [0x01, 0x71, 0x09, 0x05, 0x03],

  '8': [0x36, 0x49, 0x49, 0x49, 0x36],

  '9': [0x06, 0x49, 0x49, 0x29, 0x1e],

  ':': [0x00, 0x36, 0x36, 0x00, 0x00],

  ';': [0x00, 0x56, 0x36, 0x00, 0x00],

  '<': [0x08, 0x14, 0x22, 0x41, 0x00], '=': [0x14, 0x14, 0x14, 0x14, 0x14], '>': [0x00, 0x41, 0x22, 0x14, 0x08],

  '?': [0x02, 0x01, 0x51, 0x09, 0x06],

  '@': [0x32, 0x49, 0x79, 0x41, 0x3e],

  'A': [0x7e, 0x11, 0x11, 0x11, 0x7e],

  'B': [0x7f, 0x49, 0x49, 0x49, 0x36],

  'C': [0x3e, 0x41, 0x41, 0x41, 0x22],

  'D': [0x7f, 0x41, 0x41, 0x22, 0x1c],

  'E': [0x7f, 0x49, 0x49, 0x49, 0x41],

  'F': [0x7f, 0x09, 0x09, 0x09, 0x01],

  'G': [0x3e, 0x41, 0x49, 0x49, 0x7a],

  'H': [0x7f, 0x08, 0x08, 0x08, 0x7f],

  'I': [0x00, 0x41, 0x7f, 0x41, 0x00],

  'J': [0x20, 0x40, 0x41, 0x3f, 0x01],

  'K': [0x7f, 0x08, 0x14, 0x22, 0x41],

  'L': [0x7f, 0x40, 0x40, 0x40, 0x40],

  'M': [0x7f, 0x02, 0x0c, 0x02, 0x7f],

  'N': [0x7f, 0x04, 0x08, 0x10, 0x7f],

  'O': [0x3e, 0x41, 0x41, 0x41, 0x3e],

  'P': [0x7f, 0x09, 0x09, 0x09, 0x06],

  'Q': [0x3e, 0x41, 0x51, 0x21, 0x5e],

  'R': [0x7f, 0x09, 0x19, 0x29, 0x46],

  'S': [0x46, 0x49, 0x49, 0x49, 0x31],

  'T': [0x01, 0x01, 0x7f, 0x01, 0x01],

  'U': [0x3f, 0x40, 0x40, 0x40, 0x3f],

  'V': [0x1f, 0x20, 0x40, 0x20, 0x1f],

  'W': [0x3f, 0x40, 0x38, 0x40, 0x3f],

  'X': [0x63, 0x14, 0x08, 0x14, 0x63],

  'Y': [0x07, 0x08, 0x70, 0x08, 0x07],

  'Z': [0x61, 0x51, 0x49, 0x45, 0x43],

  '[': [0x00, 0x7f, 0x41, 0x41, 0x00],

  '\\': [0x02, 0x04, 0x08, 0x10, 0x20],

  ']': [0x00, 0x41, 0x41, 0x7f, 0x00],

  '^': [0x04, 0x02, 0x01, 0x02, 0x04],

  '_': [0x40, 0x40, 0x40, 0x40, 0x40],

  '`': [0x00, 0x01, 0x02, 0x04, 0x00],

  'a': [0x20, 0x54, 0x54, 0x54, 0x78],

  'b': [0x7f, 0x48, 0x44, 0x44, 0x38],

  'c': [0x38, 0x44, 0x44, 0x44, 0x20],

  'd': [0x38, 0x44, 0x44, 0x48, 0x7f],

  'e': [0x38, 0x54, 0x54, 0x54, 0x18],

  'f': [0x08, 0x7e, 0x09, 0x01, 0x02],

  'g': [0x0c, 0x52, 0x52, 0x52, 0x3e],

  'h': [0x7f, 0x08, 0x04, 0x04, 0x78],

  'i': [0x00, 0x44, 0x7d, 0x40, 0x00],

  'j': [0x20, 0x40, 0x44, 0x3d, 0x00],

  'k': [0x7f, 0x10, 0x28, 0x44, 0x00],

  'l': [0x00, 0x41, 0x7f, 0x40, 0x00],

  'm': [0x7c, 0x04, 0x18, 0x04, 0x78],

  'n': [0x7c, 0x08, 0x04, 0x04, 0x78],

  'o': [0x38, 0x44, 0x44, 0x44, 0x38],

  'p': [0x7c, 0x14, 0x14, 0x14, 0x08],

  'q': [0x08, 0x14, 0x14, 0x18, 0x7c],

  'r': [0x7c, 0x08, 0x04, 0x04, 0x08],

  's': [0x48, 0x54, 0x54, 0x54, 0x20],

  't': [0x04, 0x3f, 0x44, 0x40, 0x20],

  'u': [0x3c, 0x40, 0x40, 0x20, 0x7c],

  'v': [0x1c, 0x20, 0x40, 0x20, 0x1c],

  'w': [0x3c, 0x40, 0x30, 0x40, 0x3c],

  'x': [0x44, 0x28, 0x10, 0x28, 0x44],

  'y': [0x0c, 0x50, 0x50, 0x50, 0x3c],

  'z': [0x44, 0x64, 0x54, 0x4c, 0x44],

  '{': [0x00, 0x08, 0x36, 0x41, 0x00],

  '|': [0x00, 0x00, 0x7f, 0x00, 0x00],

  '}': [0x00, 0x41, 0x36, 0x08, 0x00],

  '~': [0x10, 0x08, 0x08, 0x10, 0x08],

  '\x7f': [0x00, 0x7e, 0x42, 0x42, 0x7e],

}

X = 13

Y = 5



class PCD8544(object):

    """Nokia 5110/3310 PCD8544-based LCD display."""



    def __init__(self, dc, rst, sclk=None, din=None, cs=None, gpio=None, spi=None, vcc=None, bl=None):

        self._sclk = sclk

        self._din = din

        self._dc = dc

        self._cs = cs

        self._rst = rst

        self._gpio = gpio

        self._spi = spi

        self._buffer = [0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0xE0, 0xF0, 0xF8, 0xFC, 0xFC, 0xFE, 0xFF, 0xFC, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF0, 0xF0, 0xE0, 0xE0, 0xC0, 0x80, 0xC0, 0xFC, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x3F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0F, 0x1F, 0x3F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xE7, 0xC7, 0xC7, 0x87, 0x8F, 0x9F, 0x9F, 0xFF, 0xFF, 0xFF, 0xC1, 0xC0, 0xE0, 0xFC, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0xFC, 0xFC, 0xFC, 0xFE, 0xFE, 0xFE, 0xFC, 0xFC, 0xF8, 0xF8, 0xF0, 0xE0, 0xC0, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 0xC0, 0xE0, 0xF1, 0xFB, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x1F, 0x0F, 0x0F, 0x87, 0xE7, 0xFF, 0xFF, 0xFF, 0x1F, 0x1F, 0x3F, 0xF9, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xF8, 0xFD, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x3F, 0x0F, 0x07, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0xFE, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x7E, 0x3F, 0x3F, 0x0F, 0x1F, 0xFF, 0xFF, 0xFF, 0xFC, 0xF0, 0xE0, 0xF1, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFC, 0xF0, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x03, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x0F, 0x1F, 0x3F, 0x7F, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0x7F, 0x7F, 0x1F, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 ]

        if self._gpio is None:

            self._gpio = GPIO.get_platform_gpio()

            self._gpio.setup(vcc, GPIO.OUT)

            self._gpio.setup(bl, GPIO.OUT)

            self._gpio.output(vcc, 1)

            self._gpio.output(bl, 1)

        if self._rst is not None:

            self._gpio.setup(self._rst, GPIO.OUT)

        # Default to bit bang SPI.

        if self._spi is None:

            self._spi = SPI.BitBang(self._gpio, self._sclk, self._din, None, self._cs)

        # Set pin outputs.

        self._gpio.setup(self._dc, GPIO.OUT)

        # Initialize buffer to Adafruit logo.



    def command(self, c):

        """Send command byte to display."""

        # DC pin low signals command byte.

        self._gpio.set_low(self._dc)

        self._spi.write()



    def extended_command(self, c):

        """Send a command in extended mode"""

        # Set extended command mode

        self.command(PCD8544_FUNCTIONSET | PCD8544_EXTENDEDINSTRUCTION)

        self.command(c)

        # Set normal display mode.

        self.command(PCD8544_FUNCTIONSET)

        self.command(PCD8544_DISPLAYCONTROL | PCD8544_DISPLAYNORMAL)



    def begin(self, contrast=40, bias=4):

        """Initialize display."""

        self.reset()

        # Set LCD bias.

        self.set_bias(bias)

        self.set_contrast(contrast)



    def reset(self):

        """Reset the display"""

        if self._rst is not None:

            # Toggle RST low to reset.

            self._gpio.set_low(self._rst)

            time.sleep(0.1)

            self._gpio.set_high(self._rst)



    def display(self):

        """Write display buffer to physical display."""

        # TODO: Consider support for partial updates like Arduino library.

        # Reset to position zero.

        self.command(PCD8544_SETYADDR)

        self.command(PCD8544_SETXADDR)

        # Write the buffer.

        self._gpio.set_high(self._dc)

        self._spi.write(self._buffer)



    def clear(self):

        """Clear contents of image buffer."""

        self._buffer = [0] * (LCDWIDTH * LCDHEIGHT // 8)



    def set_contrast(self, contrast):

        """Set contrast to specified value (should be 0-127)."""

        contrast = max(0, min(contrast, 0x7f)) # Clamp to values 0-0x7f

        self.extended_command(PCD8544_SETVOP | contrast)



    def set_bias(self, bias):

        """Set bias"""

        self.extended_command(PCD8544_SETBIAS | bias)



    def draw_str(self, y, s):

        """修改显示数据，y 为第几行，s 为要显示的数据"""

        if (y >= Y ) or (y < 0):

            return False

        x = 0

        for c in s[0:14]:

            try:

                self._buffer[y*84+x*6: y*84+x*6 + 6] = FONT + [0]

            except KeyError:

                pass

            x += 1



    def draw_char(self, x, y):

        pass



    def quit(self):

        self._gpio.cleanup()

接线(BCM)

dc 13
rst 5
sclk 26
din 19
cs 6
vcc 20
bl 21
gnd 0v

显示信息

网速
显示路由器的网速，电脑网速就没必要了。
我用的是老毛子固件，所以用这个固件的可以参考我的代码。

代码量不大，我就没写注释了。


# coding:utf-8

import requests

import time

from math import fabs

from base64 import b64encode

# from demjson import decode



class RaspberryMonitorNetSpeed:

    url = 'http://192.168.123.1/update.cgi?output=netdev'

    headers = {

            'Accept': 'text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8',

            'Accept-Encoding': 'gzip, deflate',

            'Accept-Language': 'zh-CN,zh;q=0.9,en;q=0.8',

            'Cache-Control': 'max-age=0',

            # 'Connection':'keep-alive',

            'Connection': 'close',

            'Cookie': 'n56u_cookie_bw_rt_tab=WAN',

            'Host': '192.168.123.1',

            'Upgrade-Insecure-Requests': '1',

            'User-Agent': 'Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/64.0.3282.186 Safari/537.36',

        }

    # 最近一次请求时间

    last_time = 0

    # 最近一次请求的下行数据总量

    last_rbytes = 0

    # 最近一次请求的上行数据总量

    last_tbytes = 0



    def __init__(self, username, passwd):

        self.headers['Authorization'] = 'Basic '+b64encode((username+':'+passwd).encode()).decode()

        data = self.__get_wan_rx_and_tx()

        self.last_rbytes = data[0]

        self.last_tbytes = data[1]

        self.last_time = data[2]



    def set_auth(self, username, passwd):

        self.headers['Authorization'] = 'Basic '+b64encode((username+':'+passwd).encode()).decode()



    def __get_wan_rx_and_tx(self):

        text = requests.get(self.url, headers=self.headers).text

        try:

            rx = int(text.split(',')[25].lstrip('rx:').strip(), 16)

            tx = int(text.split(',')[26].lstrip('tx:').rstrip('}\n').strip(), 16)

            new_time = time.time()

        except (IndexError, ValueError, TypeError):

            return False

        return [rx, tx, new_time]



    def get_human_speed(self):

        """这里返回的是 M/s 这种网速，[下载，上传]"""

        data = self.__get_wan_rx_and_tx()

        if data:

            down_speed = 0

            up_speed = 0

            try:

                down_speed = self.__bytes_to_humanspeed((data[0] - self.last_rbytes) / (data[2] - self.last_time))

                up_speed = self.__bytes_to_humanspeed((data[1] - self.last_tbytes) / (data[2] - self.last_time))

            except ZeroDivisionError:

                pass

            self.last_rbytes = data[0]

            self.last_tbytes = data[1]

            self.last_time = data[2]

            return down_speed, up_speed



    def __bytes_to_humanspeed(self, B):

        absval = fabs(B) / 1024

        megabyte = 1024

        gigabyte = megabyte * 1024

        terabyte = gigabyte * 1024

        # petabyte = terabyte * 1024

        if absval < megabyte:

            return str(round(absval, 2)) + ' KB/s'

        elif absval < gigabyte:

            return str(round(absval / megabyte, 2)) + ' M/s'

        else:

            return str(round(absval / gigabyte, 2)) + ' G/s'



    def get_bits_speed(self):

        """这里返回的是 Mbps 这种网速，[下载，上传]"""

        data = self.__get_wan_rx_and_tx()

        if data:

            down_speed = self.__bytes_to_bitrate((data[0] - self.last_rbytes) / (data[2] - self.last_time))

            up_speed = self.__bytes_to_bitrate((data[1] - self.last_tbytes) / (data[2] - self.last_time))

            self.last_rbytes = data[0]

            self.last_tbytes = data[1]

            self.last_time = data[2]

            return down_speed, up_speed



    def __bytes_to_bitrate(self, B):

        bits = B * 8

        absval = fabs(bits)

        kilobit = 1000

        megabit = kilobit * 1000

        gigabit = megabit * 1000

        if absval < megabit:

            return str(round(bits / kilobit, 2)) + ' Kbps'

        elif absval < gigabit:

            return str(round(bits / megabit, 2)) + ' Mbps'

        else:

            return str(round(bits / gigabit, 2)) + ' Gbps'



if __name__ == '__main__':

    from lcd1602 import LCD1602

    a = RaspberryMonitorNetSpeed('username', 'password')

    lcd = LCD1602()

    while True:

        tmp = a.get_human_speed()

        lcd.lcd_string('u:' + tmp[1], lcd.LCD_LINE_1)

        lcd.lcd_string('d:' + tmp[0], lcd.LCD_LINE_2)

        time.sleep(2)

温度
这里用的是 DTH11，驱动同样参考这个(Adafruit)。

开始显示
代码量同样不大，没写注释。


import time

import datetime

from PCD8544 import PCD8544 as lcd

import threading

import Adafruit_DHT

from speed import RaspberryMonitorNetSpeed as rmn



ns = [-1, -1]

th = [-2, -2]



def main():

    a = lcd(dc=13, rst=5, sclk=26, din=19, cs=6, vcc=20, bl=21)

    a.begin(contrast=60)

    tmp = threading.Thread(target=network_speed)

    tmp.setDaemon(True)

    tmp.start()

    tmp = threading.Thread(target=temperature_humidity)

    tmp.setDaemon(True)

    tmp.start()

    while True:

        try:

            a.clear()

            # 上传速度

            a.draw_str(0, 'U: ' + str(ns[1]))

            # 下载速度

            a.draw_str(1, 'D: ' + str(ns[0]))

            # 温度

            a.draw_str(2, 'T: ' + str(th[1]) + ' C')

            # 湿度

            a.draw_str(3, 'H: ' + str(th[0]) + '%')

            # 时间

            a.draw_str(4, datetime.datetime.now().__str__()[5:].lstrip('0').split('.')[0])

            a.display()

            time.sleep(1)

        except KeyboardInterrupt:

            a.quit()

            exit(0)



def network_speed():

    global ns

    b = rmn('bankroft', '123456')

    while True:

        time.sleep(1)

        ns = b.get_human_speed()



def temperature_humidity():

    global th

    pin = 25

    while True:

        time.sleep(10)

        th = Adafruit_DHT.read_retry(11, 25)



if __name__ == '__main__':

    main()

运行

依赖
python3

安装 Python 库
Adafruit_GPIO
Adafruit_DHT
requests

运行

python main.py

成果

作者：简书 Bankroft

这是一篇发布于 6年前的文章，其中的信息可能已经有所发展或是发生改变，请了解。

4,485

树莓派使用 Nokia 5110 屏幕显示网速温度

引脚

先看看驱动代码

接线(BCM)

显示信息

运行

2 评论

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引脚

先看看驱动代码

接线(BCM)

显示信息

运行

2 评论

发表评论 取消回复

发表评论取消回复