6. LCD Display Experiment

Routine Code

import lcd
import time

lcd.init()
lcd.clear(lcd.BLUE)

lcd.rotation(0)
lcd.draw_string(30, 30, "Hello", lcd.WHITE, lcd.BLUE)
time.sleep(1)

lcd.clear(lcd.BLUE)
lcd.rotation(1)
lcd.draw_string(30, 30, "Hello", lcd.WHITE, lcd.BLUE)
time.sleep(1)

lcd.clear(lcd.BLUE)
lcd.rotation(2)
lcd.draw_string(30, 30, "Hello", lcd.WHITE, lcd.BLUE)
time.sleep(1)

lcd.clear(lcd.BLUE)
lcd.rotation(3)
lcd.draw_string(30, 30, "Hello", lcd.WHITE, lcd.BLUE)
time.sleep(1)

lcd.clear(lcd.BLUE)
lcd.rotation(0)
lcd.draw_string(100, 100, "Hello", lcd.WHITE, lcd.BLUE)
time.sleep(1)

Experiment Preparation

1. Connect the K210 to your computer via USB.
1. Open CanMV IDE and run the routine code above.

Experiment Results

1. After running, the LCD displays the text "Hello" at different rotation angles and positions.

Routine Code Explanation

1. Import the modules required to run the routine.

import lcd
import time

1. Initialize the LCD, clear the screen, and set the background color to blue.

lcd.init()
lcd.clear(lcd.BLUE)

1. Set the LCD display orientation to 0 degrees (default). Draw white text "Hello" at coordinates (30, 30) with a blue background. Pause for 1 second to observe the display.

lcd.rotation(0)
lcd.draw_string(30, 30, "Hello", lcd.WHITE, lcd.BLUE)
time.sleep(1)

1. Clear the screen and restore the blue background.

lcd.clear(lcd.BLUE)

1. Set the LCD display orientation to rotation 1.

lcd.rotation(1)

1. Draw white "Hello" text at coordinates (30, 30) and pause for 1 second.

lcd.draw_string(30, 30, "Hello", lcd.WHITE, lcd.BLUE)
time.sleep(1)

1. The same pattern applies for rotation angles 2 and 3: clear the screen, set background color, set rotation, draw text at the same coordinates, and pause for 1 second.

lcd.clear(lcd.BLUE)
lcd.rotation(2)
lcd.draw_string(30, 30, "Hello", lcd.WHITE, lcd.BLUE)
time.sleep(1)

lcd.clear(lcd.BLUE)
lcd.rotation(3)
lcd.draw_string(30, 30, "Hello", lcd.WHITE, lcd.BLUE)
time.sleep(1)

1. Reset rotation to 0 and change the text coordinates to (100, 100). Display white "Hello" text and pause for 1 second to observe the effect at a different position.

lcd.clear(lcd.BLUE)
lcd.rotation(0)
lcd.draw_string(100, 100, "Hello", lcd.WHITE, lcd.BLUE)
time.sleep(1)