Orange Pi Zero and DHT11 Sensor

phyesix

Hello everyone,
I'm the beginner in programming. I need use gpio pins in my Orange Pi Zero. I found the pyA20 library: orangepi_PC_gpio_pyH3: https://github.com/duxingkei33/orangepi_PC_gpio_pyH3 ... I bought the DHT11 sensor, but I could not get it to work in any way. Is there anyone working on this subject? I love it if there are sample codes?
Thanks

nopnop2002

A sample code of RPI+RPi.GPIO is here.

https://www.raspberrypi.org/forums/viewtopic.php?t=69427&p=505235


Transplantation  from RPi.GPIO to orangepi_PC_gpio_pyH3 is the following procedure.

**RPi.GPIO**
# -*- coding: utf-8 -*-
import RPi.GPIO as GPIO
import time

COUNT = 3
PIN = 4
#GPIO.setmode(GPIO.BOARD)
GPIO.setmode(GPIO.BCM)
GPIO.setup(PIN,GPIO.OUT)

for _ in xrange(COUNT):
    GPIO.output(PIN,True)
    time.sleep(1.0)
    GPIO.output(PIN,False)
    time.sleep(1.0)

GPIO.cleanup()


**orangepi_PC_gpio_pyH3**
# -*- coding: utf-8 -*-
from pyA20.gpio import gpio
from pyA20.gpio import port
import time

COUNT = 3
PIN = port.PA6
gpio.init()
gpio.setcfg(PIN, gpio.OUTPUT)

for _ in xrange(COUNT):
    gpio.output(PIN,True)
    time.sleep(1.0)
    gpio.output(PIN,False)
    time.sleep(1.0)

#gpio.cleanup()

BTW
When you use WiringPi-Python-OP, the same cord as RPI works with OPI.

https://github.com/lanefu/WiringPi-Python-OP

$ git clone https://github.com/zhaolei/WiringOP.git -b h3
$ cd WiringOP/
$ sudo ./build
$ cd $HOME
$ git clone --recursive https://github.com/lanefu/WiringPi-Python-OP.git
$ sudo apt-get install python-dev python-setuptools swig
$ cd WiringPi-Python-OP
$ swig2.0 -python wiringpi.i
$ sudo python setup.py install
$ cd tests
$ sudo python test.py

phyesix

I tried to translate the sample code in the forum you sent. For example:

gpio.setup(PIN, gpio.IN, pull_up_down=gpio.PUD_UP)

For example, how to translate this code block? My code block:

1. #!/usr/bin/env python
   
2. from pyA20.gpio import gpio
   
3. from pyA20.gpio import port
   
4. from pyA20.gpio import connector
   
5. from time import sleep
   
6. 
   
7. def bin2dec(string_num):
   
8.     return str(int(string_num, 2))
   
9.    
   
10. data = []
    
11. 
    
12. #GPIO.setmode(GPIO.BCM)
    
13. PIN = port.PA6
    
14. 
    
15. gpio.init()
    
16. gpio.setcfg(PIN, gpio.OUTPUT)
    
17. 
    
18. gpio.output(PIN,gpio.HIGH)
    
19. sleep(0.025)
    
20. gpio.output(PIN,gpio.LOW)
    
21. sleep(0.02)
    
22. 
    
23. gpio.setup(PIN, gpio.IN, pull_up_down=gpio.PUD_UP)
    
24. 
    
25. for i in range(0,500):
    
26.     data.append(gpio.input(PIN))
    
27.    
    
28.    
    
29. bit_count = 0
    
30. tmp = 0
    
31. count = 0
    
32. HumidityBit = ""
    
33. TemperatureBit = ""
    
34. crc = ""
    
35. 
    
36. 
    
37. try:
    
38.    while data[count] == 1:
    
39.       tmp = 1
    
40.       count = count + 1
    
41.         
    
42. 
    
43.    for i in range(0, 32):
    
44.       bit_count = 0
    
45.       
    
46.       while data[count] == 0:
    
47.          tmp = 1
    
48.          count = count + 1
    
49. 
    
50.       while data[count] == 1:
    
51.          bit_count = bit_count + 1
    
52.          count = count + 1
    
53. 
    
54.       if bit_count > 3:
    
55.          if i>=0 and i<8:
    
56.             HumidityBit = HumidityBit + "1"
    
57.          if i>=16 and i<24:
    
58.             TemperatureBit = TemperatureBit + "1"
    
59.       else:
    
60.          if i>=0 and i<8:
    
61.             HumidityBit = HumidityBit + "0"
    
62.          if i>=16 and i<24:
    
63.             TemperatureBit = TemperatureBit + "0"
    
64.             
    
65. except:
    
66.    print "ERR_RANGE"
    
67.    exit(0)
    
68. 
    
69.    
    
70. try:
    
71.    for i in range(0, 8):
    
72.       bit_count = 0
    
73.       
    
74.       while data[count] == 0:
    
75.          tmp = 1
    
76.          count = count + 1
    
77. 
    
78.       while data[count] == 1:
    
79.          bit_count = bit_count + 1
    
80.          count = count + 1
    
81. 
    
82.       if bit_count > 3:
    
83.          crc = crc + "1"
    
84.       else:
    
85.          crc = crc + "0"
    
86. except:
    
87.    print "ERR_RANGE"
    
88.    exit(0)
    
89.       
    
90.       
    
91. Humidity = bin2dec(HumidityBit)
    
92. Temperature = bin2dec(TemperatureBit)
    
93. 
    
94. if int(Humidity) + int(Temperature) - int(bin2dec(crc)) == 0:
    
95.    print Humidity
    
96.    print Temperature
    
97. else:
    
98.    print "ERR_CRC"

Copy code

In the meantime, as in the following photo: