# i2c_lcd-test.py
# LCD 1602 Display mit Contoller HD44780 
# und I2C-Controller LCM 1602  (PCF8574 IO Expansion Board I2C)
import machine
from machine import Pin, I2C
from lcd_api import LcdApi
from i2c_lcd import I2cLcd
from time import sleep

I2C_ADDR = 0x27
totalRows = 2       # zwei Zeilen
totalColumns = 16   # 16 Zeichen je Zeile
SDA_Pin = 4         # GPIO4 - D14/SDA - gelb   - SDA
SCL_Pin = 5         # GPIO5 - D15/SCL - orange - SCL

i2c = I2C(scl=Pin(SCL_Pin), sda=Pin(SDA_Pin), freq=10000) 

lcd = I2cLcd(i2c, I2C_ADDR, totalRows, totalColumns)
i=0
while True:
    i = i+1
    lcd.putstr("I2C LCD 2x16")
    sleep(1)
    lcd.move_to(i%6,1)    # Zeichen i%6, Zeile 2
    lcd.putstr(str(i) + ". Duchlauf")
    sleep(1)    
    lcd.clear()
    lcd.backlight_off()
    lcd.display_off()
    sleep(0.25)    
    lcd.backlight_on()
    lcd.display_on()

#