#shows the address of liquid crystal display as 0x27. You will most likely get the same address for LCD with 16 columns and 2 rows.
'''import machine 
sdaPIN=machine.Pin(21) #for ESP32 
sclPIN=machine.Pin(22) 
i2c=machine.I2C(sda=sdaPIN, scl=sclPIN, freq=10000)
devices = i2c.scan() 
if len(devices) == 0: 
	print("No i2c device !") 
else: 
	print('i2c devices found:',len(devices)) 
for device in devices: 
	print("At address: ",hex(device))'''

from machine import Pin, SoftI2C  
from ssd1306 import SSD1306_I2C 
from time import sleep  
 
# ESP32 Pin assignment  
i2c = SoftI2C(scl=Pin(22), sda=Pin(21), freq=100000)  
# ESP8266 Pin assignment  
#i2c = SoftI2C(scl=Pin(5), sda=Pin(4), freq=100000)  
 
I2C_ADDR = 0x3c 
oled_width = 128  
oled_height = 64  
oled = SSD1306_I2C(oled_width, oled_height, i2c, I2C_ADDR)  



#oled.fill(1) #change background to white
oled.invert(True)  #change background to white
#oled.pixel(21,24,1)
#oled.contrast(50) # Contrast Range from 0-255
oled.text('Hello, World 1!', 0, 0, 1)  
oled.text('Embedded Systems', 7, 8,1)  
oled.text('Micro Python', 14, 16,1)  

oled.show()