使用python来驱动OLED
新建个python文件：spioled.py
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 = 2
shape_width = 20
top = padding
bottom = height-padding
# Move left to right keeping track of the current x position for drawing shapes.
x = padding
# Draw an ellipse.
draw.ellipse((x， top ， x+shape_width， bottom)， outline=255， fill=0)
x += shape_width+padding
# Draw a rectangle.
draw.rectangle((x， top， x+shape_width， bottom)， outline=255， fill=0)
x += shape_width+padding
# Draw a triangle.
draw.polygon([(x， bottom)， (x+shape_width/2， top)， (x+shape_width， bottom)]， outline=255， fill=0)
x += shape_width+padding
# Draw an X.
draw.line((x， bottom， x+shape_width， top)， fill=255)
draw.line((x， top， x+shape_width， bottom)， fill=255)
x += shape_width+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)， 'Hello'， font=font， fill=255)
draw.text((x， top+20)， 'World!'， font=font， fill=255)
# Display image.
disp.image(image)
disp.display()
输入完成后我们再运行这个程序，sudo python spioled.py，这时就会发现显示屏已经能够显示出东西了。接下来，给出一个经过改写的程序，其只能输出字符：
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()
