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AndreWicked

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Posts posted by AndreWicked

    Autostart python scripts

    in Beginners

    Posted

    21 hours ago, martinayotte said:

    Start it in /etc/rc.local as a background task using ampersand and make sure it is located before the "exit 0"

    It turned out to be added to the autorun, thanks, but the problem now is different, if you run the script from the root's folder, Autorun does not work, and if from the user's folder, the information from the reader is not written to the file. How I may to fix this?

    0

    SPI activation on nanopi Neo

    in Allwinner sunxi

    Posted

    On 5/7/2018 at 2:07 AM, latze said:

    Hi @all,

    I currently try to build a door-opener with a NanoPi Neo and a MFRC522 Rfid-Module.

    Unfortunately I don't get the SPI working.

    I loaded the newest Armbian-Debian from the Website: 

    
uname -r = 4.14.18-sunxi

    and downloaded the SPI-library for NanoPi: 

    
https://github.com/wertyzp/WiringNP

    By using  

    
armbian-config

    I activated "pwm", "sei-add-cs1", "spi-jedec-nor" and "spi-spidev".

    The problem:

    If I try to activate SPI with 

    
gpio load spi

    I get the following error-message: 

    
modprobe: FATAL: Module spi-sun7i not found in directory /lib/modules/4.14.18-sunxi
gpio: Unable to load spi-sun7i

    So it seems that wiringNp doesn't use "spi-dev" but "spi-sun7i" and I tried to install it from source from: 

    
https://github.com/OLIMEX/OLINUXINO/blob/master/SOFTWARE/A20/A20-build-3.4.90/spi-sun7i.c

    Unfortunately I can't find out how to write the Makefile so that I can compile the .ko-file and install the driver.

    Can you help me writing the Makefile or have another idea how I could solve the problem?

     

    Thanks in advance and greetings,

    Latze

    Pay attention to the theme I created, I got it and there I brought libraries that used. 

    https://forum.armbian.com/topic/7635-rfid-mfrc522-on-nanopi-neo/

     

    0

    RFID-MFRC522 on NanoPi Neo

    in Allwinner sunxi

    Posted

    15 minutes ago, martinayotte said:

    Still Unbelievable ...

    You got proper "dir" with "from pyA20.spi import spi" instead of "from pyA20 import spi" instead of "from pyA20 import spi" but still got that "Segmentation fault".

    Do you have set overlays properly ? what does "ls /dev/spidev*" report ?

    Still, I don't understand why the "from pyA20.spi import spi" was required, maybe bug introduced since I last fetch that library ...

     

    Just in case, here is my orangepi_PC_gpio_pyH3-master.zip I'm using since Nov 2015 ...

     

    orangepi_PC_gpio_pyH3-master.zip

    Everything turned out with RPi.GPIO_NP library 

    https://github.com/chainsx/RPi.GPIO.NP

    SPI-Py Library 

    https://github.com/lthiery/SPI-Py.git

    And  

    https://github.com/BiTinerary/OrangePiZeroMFRC522

     

    On NanoPi Neo, the libraries from OrangePi Zero are completely suitable, even the pinouts are the same. 

    root@NanoPi-NEO:~/OrangePiZeroMFRC522/MFRC522-python# sudo python Read.py
Welcome to the MFRC522 data read example
Press Ctrl-C to stop.
Card detected
Card read UID: 194,86,17,48
Size: 8
Sector 8 [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]

    You can fix it somewhere, if anyone else needs to implement an RFID reader with NanoPi Neo, since it takes very little space :) 

    Thank you for your help!

    0

    RFID-MFRC522 on NanoPi Neo

    in Allwinner sunxi

    Posted

    18 minutes ago, AndreWicked said:

    I copied your code: 

    
#!/usr/bin/python

from pyA20 import spi

data = [0x00,0x01,0x02,0x03,0x04,0x05]

print dir(spi)
spi.open("/dev/spidev0.0")
spi.write(data)
data = spi.xfer(data, len(data))
spi.close()
print data

    and run it 

    
root@NanoPi-NEO:/# sudo python test_spi.py
['__builtins__', '__doc__', '__file__', '__name__', '__package__', '__path__']
Traceback (most recent call last):
  File "test_spi.py", line 8, in <module>
    spi.open("/dev/spidev0.0")
AttributeError: 'module' object has no attribute 'open'

     

    You had an error in this line. 

    from pyA20 import spi

     

    I changed to 

    from pyA20.spi import spi

    And got this error 

    root@NanoPi-NEO:/# sudo python test_spi.py
['__doc__', '__file__', '__name__', '__package__', 'close', 'open', 'read', 'write', 'xfer']
Segmentation fault

     

    0

    RFID-MFRC522 on NanoPi Neo

    in Allwinner sunxi

    Posted

    21 minutes ago, martinayotte said:

    Unbelievable !

    You must have done a typo somewhere ...

    Just to prove that do the following before the "open" :

      

    
print dir(spi)

     

    I copied your code: 

    #!/usr/bin/python

from pyA20 import spi

data = [0x00,0x01,0x02,0x03,0x04,0x05]

print dir(spi)
spi.open("/dev/spidev0.0")
spi.write(data)
data = spi.xfer(data, len(data))
spi.close()
print data

    and run it 

    root@NanoPi-NEO:/# sudo python test_spi.py
['__builtins__', '__doc__', '__file__', '__name__', '__package__', '__path__']
Traceback (most recent call last):
  File "test_spi.py", line 8, in <module>
    spi.open("/dev/spidev0.0")
AttributeError: 'module' object has no attribute 'open'

     

    0

    RFID-MFRC522 on NanoPi Neo

    in Allwinner sunxi

    Posted

    6 hours ago, martinayotte said:

    You're right ! I've mentioned I2C simply because I saw Igor talking about it in his first reply ...

    For SPI, you need to add spidev overlay in your /boot/armbianEnv.txt along with proper parameters. (refer to : https://docs.armbian.com/User-Guide_Allwinner_overlays/ )

    Then, you can try this small SPI loopback script to verify : 

    
#!/usr/bin/python

from pyA20 import spi

data = [0x00,0x01,0x02,0x03,0x04,0x05]

spi.open("/dev/spidev0.0")
spi.write(data)
data = spi.xfer(data, len(data))
spi.close()
print data

      

    Traceback (most recent call last):
  File "test_spi.py", line 5, in <module>
    spi.open("/dev/spidev0.0")
AttributeError: 'module' object has no attribute 'open'


     

    0

    RFID-MFRC522 on NanoPi Neo

    in Allwinner sunxi

    Posted

    1 hour ago, martinayotte said:

    If you wish to test some gpio pins, here a small flasher script : 

    
#!/usr/bin/python

import time
from pyA20.gpio import gpio
from pyA20.gpio import port

gpio.init()
gpio.setcfg(port.PA20, gpio.OUTPUT)
while True:
	gpio.output(port.PA20, gpio.LOW)
	time.sleep(0.25)
	gpio.output(port.PA20, gpio.HIGH)
	time.sleep(0.25)

    If you wish to send something on I2C port, you will have to study the RFID-MFRC522 datasheet to figure out what to send and what to retrieve...

    But here is at least small example how to initialize some other kind of I2C devices, here is another flasher script working with a MCP23017 GPIO expander :

      

    
#!/usr/bin/env python

import time
from pyA20 import i2c

i2c.init("/dev/i2c-1")
i2c.open(0x20)
i2c.write([0x00, 0x00])
i2c.write([0x01, 0x00])
while True:
	i2c.write([0x12, 0x0F])
	i2c.write([0x13, 0x0F])
	time.sleep(0.15)
	i2c.write([0x12, 0xF0])
	i2c.write([0x13, 0xF0])
	time.sleep(0.15)

     

    Thank you, it worked. Last question, you write that RFID Reader needs to be connected by I2C, and on many forums write about SPI, I'm a little confused. Will you prompt?

    0

    RFID-MFRC522 on NanoPi Neo

    in Allwinner sunxi

    Posted

    1 hour ago, AndreWicked said: 
    
root@nanopineo:/# sudo git clone https://github.com/duxingkei33/orangepi_PC_gpio_pyH3
Cloning into 'orangepi_PC_gpio_pyH3'...
remote: Counting objects: 61, done.
remote: Total 61 (delta 0), reused 0 (delta 0), pack-reused 61
Unpacking objects: 100% (61/61), done.
Checking connectivity... done.
root@nanopineo:/# cd orangepi_PC_gpio_pyH3/
root@nanopineo:/orangepi_PC_gpio_pyH3# python setup.py install
running install
running build
running build_py
creating build
creating build/lib.linux-armv7l-2.7
creating build/lib.linux-armv7l-2.7/pyA20
copying pyA20/__init__.py -> build/lib.linux-armv7l-2.7/pyA20
creating build/lib.linux-armv7l-2.7/pyA20/gpio
copying pyA20/gpio/__init__.py -> build/lib.linux-armv7l-2.7/pyA20/gpio
running build_ext
Detected processor:  Allwinner sun8i Family (Probably Allwinner H3)
building 'pyA20.gpio.gpio' extension
creating build/temp.linux-armv7l-2.7
creating build/temp.linux-armv7l-2.7/pyA20
creating build/temp.linux-armv7l-2.7/pyA20/gpio
arm-linux-gnueabihf-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c pyA20/gpio/gpio_lib.c -o build/temp.linux-armv7l-2.7/pyA20/gpio/gpio_lib.o
arm-linux-gnueabihf-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c pyA20/gpio/gpio.c -o build/temp.linux-armv7l-2.7/pyA20/gpio/gpio.o
pyA20/gpio/gpio.c:25:20: fatal error: Python.h: No such file or directory
compilation terminated.

    Tell me please what is the problem?

    Sorry, 

    apt-get install python-dev

    solved the problem.

    0

    RFID-MFRC522 on NanoPi Neo

    in Allwinner sunxi

    Posted

    19 hours ago, martinayotte said:

    Since NanoPi-Neo is using H3 SoC, you can use this python library :

    https://github.com/duxingkei33/orangepi_PC_gpio_pyH3

      

    root@nanopineo:/# sudo git clone https://github.com/duxingkei33/orangepi_PC_gpio_pyH3
Cloning into 'orangepi_PC_gpio_pyH3'...
remote: Counting objects: 61, done.
remote: Total 61 (delta 0), reused 0 (delta 0), pack-reused 61
Unpacking objects: 100% (61/61), done.
Checking connectivity... done.
root@nanopineo:/# cd orangepi_PC_gpio_pyH3/
root@nanopineo:/orangepi_PC_gpio_pyH3# python setup.py install
running install
running build
running build_py
creating build
creating build/lib.linux-armv7l-2.7
creating build/lib.linux-armv7l-2.7/pyA20
copying pyA20/__init__.py -> build/lib.linux-armv7l-2.7/pyA20
creating build/lib.linux-armv7l-2.7/pyA20/gpio
copying pyA20/gpio/__init__.py -> build/lib.linux-armv7l-2.7/pyA20/gpio
running build_ext
Detected processor:  Allwinner sun8i Family (Probably Allwinner H3)
building 'pyA20.gpio.gpio' extension
creating build/temp.linux-armv7l-2.7
creating build/temp.linux-armv7l-2.7/pyA20
creating build/temp.linux-armv7l-2.7/pyA20/gpio
arm-linux-gnueabihf-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c pyA20/gpio/gpio_lib.c -o build/temp.linux-armv7l-2.7/pyA20/gpio/gpio_lib.o
arm-linux-gnueabihf-gcc -pthread -DNDEBUG -g -fwrapv -O2 -Wall -Wstrict-prototypes -fno-strict-aliasing -Wdate-time -D_FORTIFY_SOURCE=2 -g -fstack-protector-strong -Wformat -Werror=format-security -fPIC -I/usr/include/python2.7 -c pyA20/gpio/gpio.c -o build/temp.linux-armv7l-2.7/pyA20/gpio/gpio.o
pyA20/gpio/gpio.c:25:20: fatal error: Python.h: No such file or directory
compilation terminated.

    Tell me please what is the problem?

    0

    RFID-MFRC522 on NanoPi Neo

    in Allwinner sunxi

    Posted

    26 minutes ago, Igor said:

    I2C protocol, which is needed for this device, is supported but disabled by default. Use armbian-config to enable the appropriate I2C port or edit .fex file (decompile-edit-compile) /boot/script.bin if you are using old legacy 3.4.y kernel.

    RPi GPIO is on Raspberry Pi.


    I am not aware of Python libraries, but officially is this what you get: https://github.com/friendlyarm/WiringNP

    Thanks for the quick response. But can you explain it to me then? http://wiki.friendlyarm.com/wiki/index.php/RPi.GPIO_:_NanoPi_NEO/NEO2/Air_GPIO_Programming_with_Python

    As I understand in the official ROMs there is support RPi.GPIO.

    0
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