ssd1306: Add I2C protocol example for SSD1306 display.

Signed-off-by: tharuka-pavith <tharukapavith2@gmail.com>

micropython/drivers/display/ssd1306/examples/example_ssd1306_i2c.py

@@ -0,0 +1,49 @@
+# MicroPython SSD1306 display via I2C protocol example
+#
+# This example demonstrates how to configure SSD1306 OLED display
+# via I2C protocol.
+#
+#
+# To run this example:
+# 1. Connect your SSD1306 display with the microcontroller.
+#    (In this example an ESP32 is used with pins: SCL = Pin 22, SDA = Pin 21.
+#    Note that IC pin numbering may not map with the board's pin numbers.
+#    Please refer the boards datasheet.)
+#
+# 2. Make sure `ssd1306` is installed via: mpremote mip install ssd1306
+#    (Alternatively, you can copy ssd1306.py to your board.)
+#
+# 3. Run the example via: mpremote run example_ssd1306_i2c.py
+#    (You can also copy this file to the board and run it.)
+#
+# 4. Observe the output on your SSD1306 OLED display.
+#
+# MIT license; Copyright (c) 2024 Tharuka Pavith.
+
+import ssd1306
+from machine import Pin, SoftI2C
+from time import sleep_ms, localtime
+from micropython import const
+
+# I2C is deprecated. Therefore, use SoftI2C
+i2c = SoftI2C(scl=Pin(22), sda=Pin(21))
+
+# SSD1306 OLED display dimensions
+WIDTH = const(128)
+HEIGHT = const(64)
+
+disp = ssd1306.SSD1306_I2C(WIDTH, HEIGHT, i2c)  # Create SSD1306 display object
+
+disp.invert(False)  # Toggle this True/False to invert pixels
+disp.contrast(20)  # Set contrast
+
+while True:
+    yy, mm, dd, hr, mn, sec, *ext = localtime()  # Unpack the localtime tuple
+    disp.text("MicroPython", 5, 4)  # Set text starting from x=5, y=4 coordinates
+    disp.text(f"Time :{hr}:{mn}:{sec}", 5, 20)  # Set time text
+    disp.text(f"Date :{dd}/{mm}/{yy}", 5, 40)  # Set date text
+    disp.show()  # Update the display
+
+    sleep_ms(1000)
+
+    disp.fill(0)  # Make all pixels low (depends on inverted or not)