from machine import Pin,ADC
import time, os
import network, gc, urequests
def df():
s = os.statvfs('//')
return ('{0} MB'.format((s[0]*s[3])/1048576))
def free(full=False, collect=False):
if collect:
gc.collect()
F = gc.mem_free()
A = gc.mem_alloc()
T = F+A
P = '{0:.2f}%'.format(F/T*100)
if not full:
return P
else:
return ('Total:{0} Free:{1} ({2})'.format(T, F, P))
# # while True:
# print(free(True, False))
# time.sleep(1)
gc.enable()
led = Pin(15,Pin.OUT)
light_adc = ADC(32)
print('Connecting to\n WiFi...')
wifi = network.WLAN(network.STA_IF)
wifi.active(True)
wifi.connect('Wokwi-GUEST', '')
while not wifi.isconnected():
pass
print('Connecting\n success...')
while 1 :
light = light_adc.read_u16()
GAMMA = 0.7
RL10 = 50
analogValue = light;
voltage = analogValue / 65535 * 5;
resistance = 2000 * voltage / (1 - voltage / 5);
lux = pow(RL10 * 1e3 * pow(10, GAMMA) / resistance, (1 / GAMMA));
print(free(True, False))
# # try:
# response = urequests.get('https://api.thingspeak.com/update?api_key=3Y5KGPNSI0GDFSCG&field2={}'.format(lux))
# print(response)
# # except:
# # print('Error: failed')
time.sleep(5)