iot_inatel/ExerPot.py at master · dfponte/iot_inatel · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
import spidev
import time
from libsoc import gpio

from gpio_96boards import GPIO

GPIO_CS = GPIO.gpio_id('GPIO_CS')
RELE = GPIO.gpio_id('GPIO_A')

pins = ((GPIO_CS, 'out'),(RELE, 'out'),)

spi = spidev.SpiDev()
spi.open(0,0)
spi.max_speed_hz = 10000
spi.mode = 0b00
spi.bits_per_word = 8

def readtemp(gpio):

	gpio.digital_write(GPIO_CS, GPIO.HIGH)
	time.sleep(0.0002)
	gpio.digital_write(GPIO_CS, GPIO.LOW)
	r = spi.xfer2([0x01, 0xA0, 0x00])
	gpio.digital_write(GPIO_CS, GPIO.HIGH)
	adcout = (r[1] << 8) & 0b1100000000
	adcout = adcout | (r[2] & 0xff)
	print ("Valor do Pot.:%d" %adcout)
	return adcout

while True:
	with GPIO(pins) as gpio:
		value = readtemp(gpio)
		if value > 500:
			gpio.digital_write(RELE, GPIO.HIGH)
                        time.sleep(0.5)
                         gpio.digital_write(RELE, GPIO.LOW)


		else:
			gpio.digital_write(RELE, GPIO.LOW)

		time.sleep(0.5)