"""
07_oled_test.py

First year hardware project
School of ICT
Metropolia University of Applied Sciences
23.1.2023, Sakari Lukkarinen

This demo
- writes text and draws rectangles to the OLED
- uses I2C to control OLED
- uses ssd1306 library
Notes
- You need to install ssd1306 library in Thonny: 
      (Tools > Manage Packages, Search: ssd1306, Install)
- The original code can be found: 
    https://github.com/sakluk/first_year_hardware_project/blob/main/python/07_oled_test.py
- This simulation is based on the instructions and model 
  provided by TechnicalUpdate, see:
    https://www.youtube.com/watch?v=TsakxMANaBQ
    https://wokwi.com/projects/320405630824219218
"""

from machine import Pin, I2C
from ssd1306 import SSD1306_I2C
import utime

# Pins for OLED
OLED_SCL = 15
OLED_SDA = 14

# Initialize I2C to use OLED
i2c = I2C(1, scl=Pin(OLED_SCL), sda=Pin(OLED_SDA), freq=400000)
OLED_WIDTH = 128
OLED_HEIGHT = 64
oled = SSD1306_I2C(OLED_WIDTH, OLED_HEIGHT, i2c)

# Wait for a second
utime.sleep(1)

# Fill with light
oled.fill(1)
oled.show()

# Wait for a second
utime.sleep(1)

# Clear the display (off)
oled.fill(0)

# Repeat 10 times
for n in range(5):
    # Write text to OLED
    oled.text('Hardware project', 1, 1)
    oled.text('School of ICT', 1, 11)
    oled.text('Metropolia UAS', 1, 21)
    oled.text('23.1.2023', 1, 31)
    #oled.text('----------------', 1, 41)
    oled.text('123456789-123456', 1, 48)
    # Draw rectangles around the last numbers
    oled.rect(0, 41, 128, 23, 2)
    oled.rect(0, 42, 128, 21, 2)
    oled.show()
    # Wait for 2 seconds
    utime.sleep(2)
    # Clear the display
    oled.fill(0)
    oled.show()
    # Wait for 0.5 second
    utime.sleep(0.5)