import time
from machine import Pin, I2C
import ssd1306

# ESP32 Pin assignment 
i2c = I2C(0, scl=Pin(22), sda=Pin(21))

oled_width = 128
oled_height = 64
oled = ssd1306.SSD1306_I2C(oled_width, oled_height, i2c)

oled.text('Hello, Wokwi!', 10, 10)      
oled.show()


A = Pin(25, Pin.OUT, value=1)
B = Pin(26, Pin.OUT, value=1)
C = Pin(27, Pin.OUT, value=1)
D = Pin(14, Pin.OUT, value=1)
E = Pin(12, Pin.OUT, value=1)
F = Pin(13, Pin.OUT, value=1)
G = Pin(17, Pin.OUT, value=1)
DP = Pin(16, Pin.OUT, value=1)

def null():
    A.off()
    B.off()
    C.off()
    D.off()
    E.off()
    F.off()
    G.on()

def one():
    A.on()
    B.off()
    C.off()
    D.on()
    E.on()
    F.on()
    G.on()


null()
time.sleep(1)
one()