树莓派Pico上使用SSD1306 OLED屏幕-电子发烧友网

SSD1306 OLED 屏幕模块配备 0.9 英寸迷你单色屏，128×32 分辨率，白光像素点。拥有极高的对比度，显示清晰极易辨识。OLED 仅使用树莓派的 I2C 和电源引脚，无需独立供电，即插即用。

接线

屏幕模块的 VCC 接树莓派 Pico 的 3V3 引脚
屏幕模块的 GND 接树莓派 Pico 的 GND 引脚
屏幕模块的 SDA 引脚接树莓派 Pico 的 GP14 引脚
屏幕模块的 SCL 引脚接树莓派 Pico 的 SCL 引脚

代码

这里使用开源的MicroPython ssd1306 库。将下面的代码保存在 Pico 上，命名为 ssd1306.py。

# MicroPython SSD1306 OLED driver, I2C and SPI interfaces
 
from micropython import const
import framebuf
 
# register definitions
SET_CONTRAST = const(0x81)
SET_ENTIRE_ON = const(0xA4)
SET_NORM_INV = const(0xA6)
SET_DISP = const(0xAE)
SET_MEM_ADDR = const(0x20)
SET_COL_ADDR = const(0x21)
SET_PAGE_ADDR = const(0x22)
SET_DISP_START_LINE = const(0x40)
SET_SEG_REMAP = const(0xA0)
SET_MUX_RATIO = const(0xA8)
SET_IREF_SELECT = const(0xAD)
SET_COM_OUT_DIR = const(0xC0)
SET_DISP_OFFSET = const(0xD3)
SET_COM_PIN_CFG = const(0xDA)
SET_DISP_CLK_DIV = const(0xD5)
SET_PRECHARGE = const(0xD9)
SET_VCOM_DESEL = const(0xDB)
SET_CHARGE_PUMP = const(0x8D)
 
# Subclassing FrameBuffer provides support for graphics primitives
# http://docs.micropython.org/en/latest/pyboard/library/framebuf.html
class SSD1306(framebuf.FrameBuffer):
    def __init__(self, width, height, external_vcc):
        self.width = width
        self.height = height
        self.external_vcc = external_vcc
        self.pages = self.height // 8
        self.buffer = bytearray(self.pages * self.width)
        super().__init__(self.buffer, self.width, self.height, framebuf.MONO_VLSB)
        self.init_display()
 
    def init_display(self):
        for cmd in (
            SET_DISP,  # display off
            # address setting
            SET_MEM_ADDR,
            0x00,  # horizontal
            # resolution and layout
            SET_DISP_START_LINE,  # start at line 0
            SET_SEG_REMAP | 0x01,  # column addr 127 mapped to SEG0
            SET_MUX_RATIO,
            self.height - 1,
            SET_COM_OUT_DIR | 0x08,  # scan from COM[N] to COM0
            SET_DISP_OFFSET,
            0x00,
            SET_COM_PIN_CFG,
            0x02 if self.width > 2 * self.height else 0x12,
            # timing and driving scheme
            SET_DISP_CLK_DIV,
            0x80,
            SET_PRECHARGE,
            0x22 if self.external_vcc else 0xF1,
            SET_VCOM_DESEL,
            0x30,  # 0.83*Vcc
            # display
            SET_CONTRAST,
            0xFF,  # maximum
            SET_ENTIRE_ON,  # output follows RAM contents
            SET_NORM_INV,  # not inverted
            SET_IREF_SELECT,
            0x30,  # enable internal IREF during display on
            # charge pump
            SET_CHARGE_PUMP,
            0x10 if self.external_vcc else 0x14,
            SET_DISP | 0x01,  # display on
        ):  # on
            self.write_cmd(cmd)
        self.fill(0)
        self.show()
 
    def poweroff(self):
        self.write_cmd(SET_DISP)
 
    def poweron(self):
        self.write_cmd(SET_DISP | 0x01)
 
    def contrast(self, contrast):
        self.write_cmd(SET_CONTRAST)
        self.write_cmd(contrast)
 
    def invert(self, invert):
        self.write_cmd(SET_NORM_INV | (invert & 1))
 
    def rotate(self, rotate):
        self.write_cmd(SET_COM_OUT_DIR | ((rotate & 1) << 3))
        self.write_cmd(SET_SEG_REMAP | (rotate & 1))
 
    def show(self):
        x0 = 0
        x1 = self.width - 1
        if self.width != 128:
            # narrow displays use centred columns
            col_offset = (128 - self.width) // 2
            x0 += col_offset
            x1 += col_offset
        self.write_cmd(SET_COL_ADDR)
        self.write_cmd(x0)
        self.write_cmd(x1)
        self.write_cmd(SET_PAGE_ADDR)
        self.write_cmd(0)
        self.write_cmd(self.pages - 1)
        self.write_data(self.buffer)
 
class SSD1306_I2C(SSD1306):
    def __init__(self, width, height, i2c, addr=0x3C, external_vcc=False):
        self.i2c = i2c
        self.addr = addr
        self.temp = bytearray(2)
        self.write_list = [b"x40", None]  # Co=0, D/C#=1
        super().__init__(width, height, external_vcc)
 
    def write_cmd(self, cmd):
        self.temp[0] = 0x80  # Co=1, D/C#=0
        self.temp[1] = cmd
        self.i2c.writeto(self.addr, self.temp)
 
    def write_data(self, buf):
        self.write_list[1] = buf
        self.i2c.writevto(self.addr, self.write_list)
 
 
class SSD1306_SPI(SSD1306):
    def __init__(self, width, height, spi, dc, res, cs, external_vcc=False):
        self.rate = 10 * 1024 * 1024
        dc.init(dc.OUT, value=0)
        res.init(res.OUT, value=0)
        cs.init(cs.OUT, value=1)
        self.spi = spi
        self.dc = dc
        self.res = res
        self.cs = cs
        import time
 
        self.res(1)
        time.sleep_ms(1)
        self.res(0)
        time.sleep_ms(10)
        self.res(1)
        super().__init__(width, height, external_vcc)
 
    def write_cmd(self, cmd):
        self.spi.init(baudrate=self.rate, polarity=0, phase=0)
        self.cs(1)
        self.dc(0)
        self.cs(0)
        self.spi.write(bytearray([cmd]))
        self.cs(1)
 
    def write_data(self, buf):
        self.spi.init(baudrate=self.rate, polarity=0, phase=0)
        self.cs(1)
        self.dc(1)
        self.cs(0)
        self.spi.write(buf)
        self.cs(1)

该库使用了 MicroPython 的framebuf 库。关于 framebuf 库的用法可以参考文档，也可以通过这篇文章快速了解一下「MicroPython 帧缓冲区库 framebuf 的使用方法」。

下面是示例代码，在屏幕上输出指定的信息，将代码保存在 Pico 上，命名为 main.py。

import machine
import ssd1306
 
i2c = machine.I2C(1, sda=machine.Pin(14), scl=machine.Pin(15), freq=400_000)
print("I2C device: " + str(i2c.scan()[0]))
oled = ssd1306.SSD1306_I2C(128, 64, i2c)
 
oled.text("PICO LAB", 0, 0)
oled.hline(0, 10, 128, 1)
oled.text("Hello World!", 0, 26)
oled.hline(0, 48, 128, 1)
oled.text("PICO.NXEZ.COM", 0, 52)
oled.show()

显示效果如图。

下面的示例代码来画一个树莓派 Logo 并显示在屏幕上。将代码保存在 Pico 上，命名为 main.py。

import ssd1306
import framebuf
 
i2c = machine.I2C(1, sda=machine.Pin(14), scl=machine.Pin(15), freq=400_000)
oled = ssd1306.SSD1306_I2C(128, 64, i2c)
 
data = [0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
        0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0xFC,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xF8,0x3E,0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0xE0,0x07,0x00,0x00,0x00,0x7F,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3F,0x80,0x03,0x80,0x00,0x01,0xF7,0xC0,0x00,0x00,0x00,
        0x00,0x00,0x00,0x00,0x01,0xFF,0x80,0x01,0xF8,0x00,0x0F,0x90,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0xFF,0xE0,0x01,0xFF,0x00,0x0E,0x00,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0x01,0xF8,0x01,0xFF,0xC0,0x3C,0x00,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x3C,0x00,0xFF,0xFF,0xE1,0xE0,0x70,0x00,0x60,0x00,0x00,0x00,
        0x00,0x00,0x00,0x00,0x38,0x00,0xFF,0xFF,0xE0,0x70,0x70,0x00,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x70,0x00,0xFF,0xFF,0xF0,0x39,0xC0,0x00,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE0,0x00,0xFF,0xDF,0xF0,0x1D,0xC0,0x00,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE0,0x01,0xFE,0x01,0xF8,0x0F,0x80,0x00,0x30,0x00,0x00,0x00,
        0x00,0x00,0x00,0x01,0xC0,0x01,0xF8,0x00,0x7C,0x0F,0x00,0x00,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xC0,0x03,0xF8,0x00,0x3E,0x0F,0x00,0x00,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xC0,0x07,0xF0,0x00,0x1F,0x06,0x00,0x00,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0xC0,0x0F,0xE0,0x00,0x1F,0x86,0x00,0x20,0x30,0x00,0x00,0x00,
        0x00,0x00,0x00,0x07,0xC0,0x3F,0xE0,0x00,0x0F,0x86,0x00,0x20,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0xC0,0x7F,0xE0,0x00,0x0F,0xC6,0x00,0x40,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0xFF,0xFF,0xE0,0x00,0x0F,0xF7,0x00,0xC0,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0xFF,0xFF,0xE0,0x00,0x0F,0xFF,0x00,0x80,0x60,0x00,0x00,0x00,
        0x00,0x00,0x00,0x3F,0xFF,0xFF,0xF0,0x00,0x0F,0xFF,0x01,0x00,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x39,0xFF,0x80,0xF0,0x00,0x0F,0x9F,0x83,0x00,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x70,0xFE,0x00,0x78,0x00,0x0F,0x0F,0xC6,0x00,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0xE0,0xFE,0x00,0x3C,0x00,0x0E,0x07,0xFC,0x00,0xC0,0x00,0x00,0x00,
        0x00,0x00,0x00,0xE0,0x7C,0x00,0x1E,0x00,0x1E,0x03,0xFC,0x00,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x78,0x00,0x1F,0x00,0x3C,0x03,0xFC,0x03,0x80,0x00,0x00,0x00,0x00,0x00,0x01,0xC0,0x78,0x00,0x0F,0xE0,0xFC,0x03,0xFE,0x07,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xC0,0x78,0x00,0x0F,0xFF,0xFC,0x01,0xFF,0xFC,0x00,0x00,0x00,0x00,
        0x00,0x00,0x01,0xC0,0x78,0x00,0x0F,0xFF,0xFC,0x01,0xFF,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xC0,0x78,0x00,0x0F,0xFF,0xFC,0x03,0xFF,0xF0,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xC0,0x78,0x00,0x0F,0xFF,0xFC,0x03,0xFF,0xFC,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x78,0x00,0x0F,0xE0,0xFC,0x03,0xFE,0x07,0x00,0x00,0x00,0x00,
        0x00,0x00,0x00,0xC0,0x78,0x00,0x0F,0x00,0x3C,0x03,0xFC,0x03,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0xE0,0x7C,0x00,0x1E,0x00,0x1E,0x07,0xF8,0x00,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x70,0x7E,0x00,0x3C,0x00,0x0E,0x07,0xFC,0x00,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x70,0xFE,0x00,0x38,0x00,0x0F,0x0F,0xC6,0x00,0xE0,0x00,0x00,0x00,
        0x00,0x00,0x00,0x38,0xFF,0x80,0xF8,0x00,0x07,0x9F,0x83,0x00,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0xFF,0xE3,0xF0,0x00,0x07,0xFF,0x01,0x00,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0xFF,0xFF,0xF0,0x00,0x07,0xF7,0x00,0x80,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0xE0,0xFF,0xF0,0x00,0x07,0xE7,0x00,0xC0,0x30,0x00,0x00,0x00,
        0x00,0x00,0x00,0x07,0xC0,0x3F,0xF0,0x00,0x0F,0x86,0x00,0x40,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x07,0xC0,0x0F,0xF0,0x00,0x0F,0x86,0x00,0x20,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xC0,0x07,0xF0,0x00,0x1F,0x0E,0x00,0x20,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x03,0xC0,0x03,0xF0,0x00,0x3E,0x0E,0x00,0x10,0x30,0x00,0x00,0x00,
        0x00,0x00,0x00,0x01,0xC0,0x01,0xF8,0x00,0x7C,0x4F,0x00,0x00,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xC0,0x00,0xFC,0x00,0xF8,0x1F,0x00,0x00,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE0,0x00,0xFF,0x03,0xF8,0x1D,0x80,0x00,0x30,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xE0,0x00,0x7F,0xFF,0xF0,0x39,0xC0,0x00,0x30,0x00,0x00,0x00,
        0x00,0x00,0x00,0x00,0x70,0x00,0x7F,0xFF,0xE0,0xF1,0xC0,0x00,0x70,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x38,0x00,0x7F,0xFF,0xE1,0xE0,0x70,0x00,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1C,0x00,0x7F,0x00,0xFF,0xC0,0x70,0x00,0x60,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0x01,0xF0,0x00,0xFF,0x00,0x3C,0x00,0x60,0x00,0x00,0x00,
        0x00,0x00,0x00,0x00,0x07,0xFF,0xC0,0x01,0xF8,0x00,0x0E,0x00,0xE0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0xFF,0x80,0x03,0xC0,0x00,0x07,0x90,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x0F,0xE0,0x07,0x80,0x00,0x01,0xF7,0xC0,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0xF8,0x1F,0x00,0x00,0x00,0x7F,0xC0,0x00,0x00,0x00,
        0x00,0x00,0x00,0x00,0x00,0x00,0x7F,0xFC,0x00,0x00,0x00,0x04,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x1F,0xF8,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x01,0x80,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00]
 
buf = framebuf.FrameBuffer(bytearray(data), 128, 64, framebuf.MONO_HLSB)
oled.blit(buf, 0, 0)
oled.show()

运行效果如图。

审核编辑：汤梓红

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原文标题：树莓派 Pico 上使用 SSD1306 OLED 屏幕

文章出处：【微信号：趣无尽，微信公众号：趣无尽】欢迎添加关注！文章转载请注明出处。

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ssd1306用spi连接arduino，几率花屏，但是在树莓派上用就没问题，请问各位大佬有什么好的建议吗

发表于 10-19 08:26

内部SSD1306驱动芯片手册

OLED显示屏控制芯片SSD1306，它的驱动芯片手册

发表于 11-26 15:10 •894次下载

基于SSD1306的OLED开发模块

基于SSD1306的OLED开发模块，包含SSD1306-Revision-1.1.pdf和SSD1306命令.doc

发表于 02-24 14:03 •98次下载

SSD1306(OLED驱动芯片介绍)

SSD1306(OLED驱动芯片介绍)在介绍0.96寸 SSD1306之前先附上模块链接：点击购买SSD1306 OLED显示模块概述

发表于 11-09 18:36 •53次下载

SSD1306 OLED上的ESP8266 NTP时钟

电子发烧友网站提供《SSD1306 OLED上的ESP8266 NTP时钟.zip》资料免费下载

发表于 11-09 11:28 •0次下载

基于树莓派的SSD1306 OLED视频播放器

该项目使用 Raspberry Pi 在 Python 上运行 OpenCV 以在 SSD1306 OLED 显示器上播放视频/电影。

发表于 12-08 09:43 •2次下载

SSD1306 OLED显示屏上的Arduino Flash文本

电子发烧友网站提供《SSD1306 OLED显示屏上的Arduino Flash文本.zip》资料免费下载

发表于 01-31 10:12 •1次下载

Arduino在SSD1306 OLED显示屏上随机移动文本

电子发烧友网站提供《Arduino在SSD1306 OLED显示屏上随机移动文本.zip》资料免费下载

发表于 06-09 10:09 •0次下载

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树莓派Pico上使用SSD1306 OLED屏幕

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ssd1306 OLED花屏怎么解决？

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基于SSD1306的OLED开发模块

SSD1306(OLED驱动芯片介绍)

SSD1306 OLED上的ESP8266 NTP时钟

基于树莓派的SSD1306 OLED视频播放器

SSD1306 OLED显示屏上的Arduino Flash文本

Arduino在SSD1306 OLED显示屏上随机移动文本