pico_i2c_lcd_test.py

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