pico_i2c_lcd_test.py

   1 import utime
   2
   3 import machine
   4 from machine import I2C
   5 from lcd_api import LcdApi
   6 from pico_i2c_lcd import I2cLcd
   7
   8 I2C_ADDR     = 0x27
   9 I2C_NUM_ROWS = 4
  10 I2C_NUM_COLS = 20
  11
  12 def test_main():
  13     #Test function for verifying basic functionality
  14     print("Running test_main")
  15     i2c = I2C(0, sda=machine.Pin(0), scl=machine.Pin(1), freq=400000)
  16     lcd = I2cLcd(i2c, I2C_ADDR, I2C_NUM_ROWS, I2C_NUM_COLS)
  17     lcd.putstr("It Works!")
  18     utime.sleep(2)
  19     lcd.clear()
  20     count = 0
  21     while True:
  22         lcd.clear()
  23         time = utime.localtime()
  24         lcd.putstr("{year:>04d}/{month:>02d}/{day:>02d} {HH:>02d}:{MM:>02d}:{SS:>02d}".format(
  25             year=time[0], month=time[1], day=time[2],
  26             HH=time[3], MM=time[4], SS=time[5]))
  27         if count % 10 == 0:
  28             print("Turning cursor on")
  29             lcd.show_cursor()
  30         if count % 10 == 1:
  31             print("Turning cursor off")
  32             lcd.hide_cursor()
  33         if count % 10 == 2:
  34             print("Turning blink cursor on")
  35             lcd.blink_cursor_on()
  36         if count % 10 == 3:
  37             print("Turning blink cursor off")
  38             lcd.blink_cursor_off()
  39         if count % 10 == 4:
  40             print("Turning backlight off")
  41             lcd.backlight_off()
  42         if count % 10 == 5:
  43             print("Turning backlight on")
  44             lcd.backlight_on()
  45         if count % 10 == 6:
  46             print("Turning display off")
  47             lcd.display_off()
  48         if count % 10 == 7:
  49             print("Turning display on")
  50             lcd.display_on()
  51         if count % 10 == 8:
  52             print("Filling display")
  53             lcd.clear()
  54             string = ""
  55             for x in range(32, 32+I2C_NUM_ROWS*I2C_NUM_COLS):
  56                 string += chr(x)
  57             lcd.putstr(string)
  58         count += 1
  59         utime.sleep(2)
  60
  61 #if __name__ == "__main__":
  62 test_main()