from machine import Pin,I2C, ADC
import ssd1306
import time
import math
i2c = I2C(scl=Pin(27), sda=Pin(26))
oled = ssd1306.SSD1306_I2C(128,64,i2c)
adc = ADC(Pin(34,Pin.IN))

oled.fill(0)
oled.show()

global gainScale
global timeScale

def drawAxis():
    oled.hline(0,32,128,1)
    oled.vline(64,0,64,1)
    oled.show()
    
gainScale = 0.25
timeScale = 0.05

while True:
    T = []
    drawAxis()
    
    for i in range(0,256):
        T.append(int(-1*adc.read()/30*gainScale)+63)
        time.sleep(timeScale)
        print(adc.read())
      
    for i in range(0,2):
        for j in range(0,128):
            oled.pixel(j,T[i*128+j],1)
            drawAxis()
            
            oled.text("mV:"+str(550/gainScale), 0, 23, 1)
            oled.text("t:"+str(timeScale*128)+"s", 0, 34, 1)
           
            oled.show()
        
        oled.fill(0)
        drawAxis()
        oled.show()