my_util.py

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程式碼如下：(程式碼右小角 view raw 點開後可存檔)

	# name: my_util.py
	from machine import Pin, SPI, SoftSPI, I2C, SoftI2C
	# ssd1306.py download from:
	# https://raw.githubusercontent.com/micropython/micropython/master/drivers/display/ssd1306.py
	import ssd1306
	def get_display():
	# assign IIC or SPI
	useSPI = True
	# assign hardware SPI/IIC or software SPI/IIC
	useSoft = False
	if useSPI:
	dc = Pin(4) # data/command
	rst = Pin(5) # reset
	cs = Pin(15) # chip select, some modules do not have a pin for this
	if useSoft:
	spi = SoftSPI(baudrate=500000, polarity=1, phase=0,
	sck=Pin(14), mosi=Pin(13), miso=Pin(12))
	else:
	spi = SPI(1) # sck=14 (scl), mosi=13 (sda), miso=12 (unused)
	display = ssd1306.SSD1306_SPI(128, 64, spi, dc, rst, cs)
	else:
	if useSoft:
	i2c = SoftI2C(scl=Pin(22), sda=Pin(21), freq=400000)
	else:
	# I2C(0, scl=22, sda=21, freq=400000)
	# I2C(1, scl=25, sda=26, freq=400000)
	i2c = I2C(0)
	# using default address 0x3C
	display = ssd1306.SSD1306_I2C(128, 64, i2c)
	#display = ssd1306.SSD1306_I2C(128, 64, i2c, addr=0x3d)
	return display

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• 下載 ssd1306.py

functions 說明

🔧 get_display / 設定 ssd1306 🔧
SSD1306 通常使用 SPI 或 I2C，而使用的 Pin 脚通常都是查詢 datasheet，或網路上找 Pinouts 圖，而 MicroPython 和 Python 一樣有 introspection 特性，所以有一個更輕鬆的方法，就是直接問問它本人即可。

>>> from machine import Pin, I2C, SPI
>>> I2C(0)
I2C(0, scl=22, sda=21, freq=400000)
>>> I2C(1)
I2C(1, scl=25, sda=26, freq=400000)
>>> SPI(1)
SPI(id=1, baudrate=500000, polarity=0, phase=0, bits=8, firstbit=0, sck=14, mosi=13, miso=12)
>>> 

只要依著它講的接線就好啦！ 如果沒有照著接，那麼它會提醒你要改用 SoftI2C or SoftSPI 才行。

>>> i2c = I2C(sda=Pin(23), scl=Pin(19))
Warning: I2C(-1, ...) is deprecated, use SoftI2C(...) instead
>>> 

可依個人需求修改 for I2C or SPI以及脚位。我是設定使用 SPI1，接線資訊如下：

MOSI	MISO	SCK	DC	RST	CS
13	unuse	14	4	5	15