feat(i2c): 添加时钟显示功能并实现信息切换

在状态显示脚本中添加时钟显示功能，并实现系统信息和时钟每5秒自动切换显示
删除不再使用的env.cfg配置文件
新增独立的时钟显示脚本clock.py

i2c.py/clock.py

@@ -0,0 +1,43 @@
+# Imports the necessary libraries...
+import time
+import board
+import digitalio
+from PIL import Image, ImageDraw, ImageFont
+import adafruit_ssd1306
+
+# Setting some variables for our reset pin etc.
+RESET_PIN = digitalio.DigitalInOut(board.D4)
+
+i2c = board.I2C()  # uses board.SCL and board.SDA
+# i2c = board.STEMMA_I2C()  # For using the built-in STEMMA QT connector on a microcontroller
+oled = adafruit_ssd1306.SSD1306_I2C(128, 64, i2c, addr=0x3C, reset=RESET_PIN)
+
+# Clear display.
+oled.fill(0)
+oled.show()
+
+# Create blank image for drawing.
+image = Image.new("1", (oled.width, oled.height))
+draw = ImageDraw.Draw(image)
+
+# Load a font in 2 different sizes.
+#font = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", 16)
+#font2 = ImageFont.truetype("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf", 24)
+font2 = ImageFont.truetype('/usr/share/fonts/truetype/wqy/wqy-microhei.ttc', 24)
+font = ImageFont.truetype('/usr/share/fonts/truetype/wqy/wqy-zenhei.ttc', 16)
+
+offset = 0  # flips between 0 and 32 for double buffering
+
+while True:
+    # write the current time to the display after each scroll
+    draw.rectangle((0, 0, oled.width, oled.height * 2), outline=0, fill=0)
+    text = time.strftime("%A")
+    draw.text((0, 0), text, font=font, fill=255)
+    text = time.strftime("%Y-%m-%d")
+    draw.text((0, 14), text, font=font, fill="red")
+    text = time.strftime("%X")
+    draw.text((0, 36), text, font=font2, fill=255)
+    oled.image(image)
+    oled.show()
+
+    time.sleep(0.5)