xgqfrms™, xgqfrms® : xgqfrms's offical website of cnblogs! xgqfrms™, xgqfrms® : xgqfrms's offical website of GitHub!

How to connect to multiple SSD1306 OLED Displays using Raspberry Pi GPIO I2C PIN All In One

合集 - Raspberry Pi(78)
1.How to fix the bug that there is no signal when the Raspberry Pi is connected to a monitor with an HDMI cable All In One2.Raspberry Pi command line tools vcgencmd All In One3.Python rpi_ws281x library All In One4.Adafruit CircuitPython NeoPixel All In One5.How to fix the problem that Raspberry Pi cannot use the root user for SSH login All In One6.How to modify the hostname and username and password of Raspberry Pi All In One7.树莓派 4B 核心电子元器件图解 All In One8.Linux install vim errors All In One9.How to boot the Raspberry Pi system from a USB Mass Storage Device All In One10.How to Control an External USB Web Camera Using a Raspberry Pi All In One11.ARM Cortex-A72 CPU All In One12.Linux shutdown & reboot & poweroff All In One13.软路由 & 旁路由 All In One14.How to change the default Python2 to Python3 on Linux All In One15.Raspberry Pi 4 Model B Product Information Portal All In One16.use SSH to connect to Raspberry Pi methods All In One17.国产单片机开发板 All In One18.How to use Raspberry Pi scan bluetooth devices All In One19.How to use the Raspberry Pi and Python to control a DHT11 wet and temperate module All In One20.How to use the Raspberry Pi and Python to control a buzzer All In One21.gpiozero API All In One22.RPi.GPIO API All In One23.Node.js & Raspberry Pi & WS2812B RGB LEDs strip All In One24.Raspberry Pi 3 Model B and Raspberry Pi 3 Model B+ and and Raspberry Pi 4 Model B All In One25.How to use Linux command or Python code get Raspberry PI's Temperature All In One
26.How to connect to multiple SSD1306 OLED Displays using Raspberry Pi GPIO I2C PIN All In One
27.Raspberry Pi & 0.96 inch SSD1306 OLED display All In One28.WS2812B RGB LED 灯带外接电源所需要的电压计算公式 All In One29.Raspberry Pi GPIO pins All In One30.如何使用蓝牙控制树莓派 All In One31. Raspberry Pi & Experience AI All In One32.如何修复树莓派在更换了一个 SD 系统卡后，无法使用 SSH 登录问题 All In One33.How to use the Raspberry Pi to study the Linux kernel source code All In One34.Raspberry Pi 设置开机登录后自启动脚本 All In One35.How to use SSH to access the Raspberry Pi without know the Wi-Fi IP address All In One36.Raspberry Pi Code Editor All In One37.Linux copy from pipe command All In One38.how to use crontab to send an email on Linux All In One39.macOS Terminal & Raspberry Pi client_loop: send disconnect: Broken pipe All In One40.Raspberry Pi crontab not work bug All In One41.Raspberry Pi GPIO 针脚图解教程 All In One42.how to get Raspberry Pi System Information All In One43.2023 最新的如何树莓派上安装中文输入法和设置中文语言环境教程 All In One44.Linux change archive mirror All In One45.How to publish a Linux package to mirror All In One46.Raspberry Pi 3B won't turn on after being powered on All In One47.Raspberry Pi Debug Probe All In One48.How to find the "usbmodem" of Raspberry Pi Pico on macOS All In One49.How to check the USB devices connected to Linux by using Terminal All In One50.Raspberry Pi Imager All In One51.use macOS terminal can not install MicroPython on Raspberry Pi Pico bug All In One52.Raspberry Pi Pico All In One53.macOS 如何通过 SSH 访问树莓派 All In One54.面包板使用教程 All In One55.Raspberry Pi Pico & MicroPython All In One56.Raspberry Pi & Python & GPIO All In One57.Raspberry Pi Remote Access All In One58.Raspberry Pi 4 B 8G All In One59.How to use macOS to connect to Raspberry Pi without the monitor All In One60.Linux 关机命令 All In One61.Raspberry Pi 5 All In One62.TensorFlow Lite & Raspberry Pi All In One63.how to install GitLab on Raspberry Pi OS 64.Raspberry Pi & GPIO All In One65.Raspberry Pi 电路图模拟器 All In One66.树莓派 4B 入门教程 All In One67.如何在树莓派上搭建 gitlab 服务 All In One68.Raspberry Pi & Node.js & WebSockets & IM69.Raspberry Pi & Raspberry Pi 4 All In One70.IoT & Raspberry Pi71.NMAP 使用教程 All In One72.如何使用 config.txt 配置 Raspberry Pi 3 的各种信息！73.如何在没有显示器的情况下查看 Raspberry Pi 3 的 IP 地址信息 All In One74.How To Install Linux & Nginx & MySQL & PHP (LEMP) stack on Raspberry Pi 3 All In One75.如何启用树莓派的硬件看门狗功能，让它在系统宕机时可以自动重新开机 All In One76.如何在 Raspberry Pi 树莓派上安装浏览器的详细教程 All In One77.树莓派(raspberry pi 3) 中文界面支持的设置，安装中文环境，中文输入法 All In One78.2016 最新的树莓派3 上手评测图解教程新手必看 All In One
收起

How to connect to multiple SSD1306 OLED Displays using Raspberry Pi GPIO I2C PIN All In One

如何使用 Raspberry Pi 的 GPIO I2C PIN 连接多个 SSD1306 OLED 显示器

串联 ???

  1. Raspberry Pi 只有一对 I2C 输出针脚， 故不可以 ❌

一对 I2C 输出针脚即使加跳线，串联了多个 SSD1306 OLED 显示屏，也无法分别控制每个显示屏;

最多也只能是多个显示屏显示完全一样的内容， 没有意义呀！

GPIO 2(SDA)
GPIO 3(SCL)

https://www.raspberrypi.com/documentation/computers/raspberry-pi.html

  1. Raspberry Pi Pico 具有多对 I2C 输出针脚， 应该可以的 ❓

有多对 I2C 输出针脚, 理论上可以分别输出不同信号，可以分别控制不同的显示屏;

GPIO 2(SDA)
GPIO 3(SCL)

https://www.raspberrypi.com/documentation/microcontrollers/raspberry-pi-pico.html

datasheets

BCM2837

https://www.raspberrypi.com/documentation/computers/processors.html#bcm2837

$ pinout

,--------------------------------.
| oooooooooooooooooooo J8     +====
| 1ooooooooooooooooooo        | USB
|                             +====
|      Pi Model 3B  V1.2         |
|      +----+                 +====
| |D|  |SoC |                 | USB
| |S|  |    |                 +====
| |I|  +----+                    |
|                   |C|     +======
|                   |S|     |   Net
| pwr        |HDMI| |I||A|  +======
`-| |--------|    |----|V|-------'

Revision           : a22082
SoC                : BCM2837
RAM                : 1GB
Storage            : MicroSD
USB ports          : 4 (of which 0 USB3)
Ethernet ports     : 1 (100Mbps max. speed)
Wi-fi              : True
Bluetooth          : True
Camera ports (CSI) : 1
Display ports (DSI): 1

J8:
   3V3  (1) (2)  5V    
 GPIO2  (3) (4)  5V    
 GPIO3  (5) (6)  GND   
 GPIO4  (7) (8)  GPIO14
   GND  (9) (10) GPIO15
GPIO17 (11) (12) GPIO18
GPIO27 (13) (14) GND   
GPIO22 (15) (16) GPIO23
   3V3 (17) (18) GPIO24
GPIO10 (19) (20) GND   
 GPIO9 (21) (22) GPIO25
GPIO11 (23) (24) GPIO8 
   GND (25) (26) GPIO7 
 GPIO0 (27) (28) GPIO1 
 GPIO5 (29) (30) GND   
 GPIO6 (31) (32) GPIO12
GPIO13 (33) (34) GND   
GPIO19 (35) (36) GPIO16
GPIO26 (37) (38) GPIO20
   GND (39) (40) GPIO21

For further information, please refer to https://pinout.xyz/

https://pinout.xyz/

image

❌

https://datasheets.raspberrypi.com/bcm2837/bcm2837-peripherals.pdf

https://datasheets.raspberrypi.com/bcm2836/bcm2836-peripherals.pdf

https://datasheets.raspberrypi.com/

✅

The underlying architecture of the BCM2837 is identical to the BCM2836.
BCM2837 的底层架构与 BCM2836 相同。

BCM2836 ARM-local peripherals
BCM2836 ARM 本地外设

https://datasheets.raspberrypi.com/bcm2836/bcm2836-peripherals.pdf

Cortex-A53 MPCore Processor Technical Reference Manual
Cortex-A53 MPCore 处理器技术参考手册

https://developer.arm.com/documentation/ddi0500/latest/

demos

pi@raspberrypi:~/OLED_Stats $ 
$ cat stats.py

import time
import board
import busio
import digitalio

from PIL import Image, ImageDraw, ImageFont
import adafruit_ssd1306

import subprocess

# Define the Reset Pin
oled_reset = digitalio.DigitalInOut(board.D4)

# Display Parameters
WIDTH = 128
HEIGHT = 64
BORDER = 5

# Display Refresh
LOOPTIME = 1.0

# Use for I2C.
i2c = board.I2C()
oled = adafruit_ssd1306.SSD1306_I2C(WIDTH, HEIGHT, i2c, addr=0x3C, reset=oled_reset)

# Clear display.
oled.fill(0)
oled.show()

# Create blank image for drawing.
# Make sure to create image with mode '1' for 1-bit color.
image = Image.new("1", (oled.width, oled.height))

# Get drawing object to draw on image.
draw = ImageDraw.Draw(image)

# Draw a white background
draw.rectangle((0, 0, oled.width, oled.height), outline=255, fill=255)

font = ImageFont.truetype('PixelOperator.ttf', 16)
#font = ImageFont.load_default()

while True:

    # Draw a black filled box to clear the image.
    draw.rectangle((0, 0, oled.width, oled.height), outline=0, fill=0)

    # Shell scripts for system monitoring from here :
    # https://unix.stackexchange.com/questions/119126/command-to-display-memory-usage-disk-usage-and-cpu-load
    cmd = "hostname -I | cut -d\' \' -f1"
    IP = subprocess.check_output(cmd, shell = True )
    cmd = "top -bn1 | grep load | awk '{printf \"CPU: %.2f\", $(NF-2)}'"
    CPU = subprocess.check_output(cmd, shell = True )
    cmd = "free -m | awk 'NR==2{printf \"Mem: %s/%sMB %.2f%%\", $3,$2,$3*100/$2 }'"
    MemUsage = subprocess.check_output(cmd, shell = True )
    cmd = "df -h | awk '$NF==\"/\"{printf \"Disk: %d/%dGB %s\", $3,$2,$5}'"
    Disk = subprocess.check_output(cmd, shell = True )
    cmd = "vcgencmd measure_temp |cut -f 2 -d '='"
    Temp = subprocess.check_output(cmd, shell = True )

    # Pi Stats Display
    draw.text((0, 0), "IP: " + str(IP,'utf-8'), font=font, fill=255)
    draw.text((0, 16), str(CPU,'utf-8') + "LA", font=font, fill=255)
    draw.text((80, 16), str(Temp,'utf-8') , font=font, fill=255)
    draw.text((0, 32), str(MemUsage,'utf-8'), font=font, fill=255)
    draw.text((0, 48), str(Disk,'utf-8'), font=font, fill=255)

    # Display image
    oled.image(image)
    oled.show()
    time.sleep(LOOPTIME)

"""

# Created by: Michael Klements
# For Raspberry Pi Desktop Case with OLED Stats Display
# Base on Adafruit CircuitPython & SSD1306 Libraries

# Installation & Setup Instructions
# https://www.the-diy-life.com/add-an-oled-stats-display-to-raspberry-pi-os-bullseye/

"""

refs

Raspberry Pi & 0.96 inch SSD1306 OLED display All In One

https://www.cnblogs.com/xgqfrms/p/17380248.html

©xgqfrms 2012-2025

www.cnblogs.com/xgqfrms 发布文章使用：只允许注册用户才可以访问！

原创文章，版权所有©️xgqfrms, 禁止转载 🈲️，侵权必究⚠️！

posted @   xgqfrms  阅读(32)  评论(5)  编辑  收藏  举报
相关博文：
· Raspberry Pi & 0.96 inch SSD1306 OLED display All In One
· Raspberry Pi & Python & GPIO All In One
· Micropython——关于Pico中I2C和SPI的实际应用示例（OLED屏幕显示）
· STM32之OLED显示
· OLED（1）原理篇
阅读排行：
· 物流快递公司核心技术能力-地址解析分单基础技术分享
· .NET 10首个预览版发布：重大改进与新特性概览！
· 单线程的Redis速度为什么快？
· 展开说说关于C#中ORM框架的用法！
· Pantheons：用 TypeScript 打造主流大模型对话的一站式集成库
历史上的今天：
2022-05-08 互联网之子-亚伦·斯沃茨 All In One
2022-05-08 学术论文版权归属权 All In One
2022-05-08 how to use GitHub gist as an npm module All In One
2022-05-08 npx & gist & npm package All In One
2022-05-08 食品工厂 All In One
2021-05-08 window.VUE_ROUTER
2021-05-08 js debounce in action
点击右上角即可分享
微信分享提示