#https://docs.pycom.io/firmwareapi/micropython/_thread/#app
# stuur temperatuur via UART0=> USB => PC
import random
from time import sleep, ticks_ms
import _thread  as thread
from  machine import Pin, I2C, ADC
from ssd1306 import SSD1306_I2C
from _get_input import get_input
#from _get_state import get_state

    
button = Pin(14, Pin.IN, Pin.PULL_UP) 
sda = Pin(21)
scl = Pin(22)

i2c = I2C(0, sda=sda, scl=scl, freq=400000)
oled = SSD1306_I2C(128, 64, i2c)

adc = ADC(Pin(27))
adc.read()                  # read value, 0-4095 across voltage range 0.0v - 1.0v

adc.atten(ADC.ATTN_11DB)    # set 11dB input attenuation (voltage range roughly 0.0v - 3.6v)
adc.width(ADC.WIDTH_10BIT)

relay = Pin(25, Pin.OUT)

button_before = 1
hyst = 0.5  
on_state = 0
time_stamp = 0
st = 0
t = ""
on_state = 0
t_meet = ""
t_wens = ""
t_pot = 0
temp = 14
hyst = 0.5
tekst6 = ""

def oled_text(t1,t2,t3,t4,t5,t6):   
        oled.fill(0)
        oled.text(t1, 5, 10)
        oled.text(t2, 70, 10)
        oled.text(t3, 5, 30)
        oled.text(t4, 70, 30)
        oled.text(t5, 5, 50)
        oled.text(t6, 70, 50)

        oled.show()

def map_fct(x, in_min, in_max, out_min, out_max):
    return round((x - in_min) * (out_max - out_min) / (in_max - in_min) + out_min,1) 

def get_state(): 
    global on_state
    global button_before
    while True:
        button_now = button.value()
        time_stamp = ticks_ms()
        if button_now != button_before:
            print("gedrukt")
            button_before = button_now
            if button_now == 0:
                on_state = not on_state
            while ticks_ms() - time_stamp < 200:
                pass
        return on_state  

def send_temp():
    global st
    global t
    rg = random.randint(-3,+3)
    st += rg
    if st < 0 or st > 30:
        st = 15
    #print(rg,st)
    print(st)
    t = str(st)
    return t      
        
get_input_thread = thread.start_new_thread(get_input, ())  #upython versie  lege tuple indien geen argumenten worden doorgegeven
get_state_thread = thread.start_new_thread(get_state, ()) 
#get_send_temp_thread = thread.start_new_thread(send_temp, ())

while 1:
    on_state = get_state()
    #print("on_state=",on_state)
    time_stamp = ticks_ms()
    if on_state == 0:
        oled_text("","","","","niet actief","")
        while ticks_ms() - time_stamp < 50:
            pass
    else:
        oled_text("gewenst","gemeten", t_wens,t_meet, "actief", tekst6)
        while ticks_ms() - time_stamp < 50:
            pass
        if ticks_ms() - time_stamp > 2500 :
            time_stamp = ticks_ms()
            t = send_temp()
        
        pot = adc.read()
        t_pot = map_fct(pot, 0, 1023, 10, 30)
        t_wens = str(t_pot)
        
        temp = 14   #gemeten_temp()
        print(temp)
        t_meet = str(temp)

        if temp + hyst <= t_pot:
            print("temp + hyst =",temp + hyst)
            tekst6 = "^^^"
            relay.on()
        else:
            tekst6 = "000"
            relay.off()