树莓派教程：轻松启用SPI驱动OLED 128*64 📺🚀

树莓派针脚定义

OLED各针脚定义以及联线
GND——rasp gnd
VCC ——rasp vcc（3.3/5V）
D0(SCLK) ——rasp SCLK （BCM:11/BOARD:23）
D1(MOSI )——rasp MOSI（BCM:10/BOARD:19）
RST——rasp GPIO（BCM:17/BOARD:11）
DC(数据与命令选择)——rasp （BCM:27/BOARD:13）
CS（SPI片选）——rasp （BCM:8/BOARD:24）

重要的部分要开始啦~~~~ATTENTION!!!!!!!!!!
1.打开树莓派的SPI。
树莓派的SPI默认是关闭的（这一点和I2C类似），打开方法有多种，在这仅介绍一种
vi /etc/modprobe.d/raspi-blacklist.conf
修改为如图
【树莓派教程】——SPI驱动OLED 128*64图2

注释掉两行表示启用SPI/I2C

# blacklist spi and i2c by default (many users don't need them)
  
   #blacklist spi-bcm2708
   #blacklist i2c-bcm2708
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reboot 以下

cd /dev
ls -al
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你会看到spidev0.0以及spidev0.1
【树莓派教程】——SPI驱动OLED 128*64图3

2.库

 sudo apt-get update
 sudo apt-get install build-essential python-dev python-pip
 sudo pip install RPi.GPIO
 sudo apt-get install python-imaging python-smbus
 sudo apt-get install git
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安装完成之后我们就可以用git 啦~~在此要感谢@孙毅带我入git的坑~~O(∩_∩)O哈哈~

git clone https://github.com/adafruit/Adafruit_Python_SSD1306.git
cd Adafruit_Python_SSD1306
sudo python setup.py install
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到这就差不多了，来一个python的程序

#!/usr/bin/python/
# coding: utf-8
import time
import Adafruit_GPIO.SPI as SPI
import Adafruit_SSD1306
import Image
import ImageDraw
import ImageFont

# Raspberry Pi pin configuration:
RST = 17
# Note the following are only used with SPI:
DC = 27
SPI_PORT = 0
SPI_DEVICE = 0

# 128x64 display with hardware SPI:
disp = Adafruit_SSD1306.SSD1306_128_64(rst=RST, dc=DC, spi=SPI.SpiDev(SPI_PORT, SPI_DEVICE, max_speed_hz=8000000))

# Initialize library.
disp.begin()

# Clear display.
disp.clear()
disp.display()

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

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

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

# Draw some shapes.
# First define some constants to allow easy resizing of shapes.
padding = 1
top = padding
x = padding
# Load default font.
font = ImageFont.load_default()

# Alternatively load a TTF font.
# Some other nice fonts to try: http://www.dafont.com/bitmap.php
#font = ImageFont.truetype('Minecraftia.ttf', 8)

# Write two lines of text.
draw.text((x, top), 'This is first line', font=font, fill=255)
draw.text((x, top+10), 'This is second line', font=font, fill=255)
draw.text((x, top+20), 'This is third line', font=font, fill=255)
draw.text((x, top+30), 'This is fourth line', font=font, fill=255)
draw.text((x, top+40), 'This is fifth line', font=font, fill=255)
draw.text((x, top+50), 'This is last line', font=font, fill=255)

# Display image.
disp.image(image)
disp.display()
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