'''
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
import ssd1306
from time import sleep

i2c = SoftI2C(scl=Pin(22), sda=Pin(21))
I2C_ADDR = 0x3c
oled_width = 128
oled_height = 64
oled = ssd1306.SSD1306_I2C(oled_width, oled_height, i2c, I2C_ADDR)

oled.text('Hello World 1!', 0, 0, 1)
oled.text('Hello World 2!', 0, 10)
oled.text('Hello World 3!', 0, 20)
oled.show()