我一直在搞乱Raspberry Pi和RFID并找到了这个教程:
https://pimylifeup.com/raspberry-pi-rfid-rc522/
安装一切都很顺利但是当我运行脚本时出现错误。
这就是问题:
pi@raspberrypi:~/MFRC522-python $ sudo python Write.py
/home/pi/MFRC522-python/MFRC522.py:115: RuntimeWarning: This channel is already in use, continuing anyway. Use GPIO.setwarnings(False) to disable warnings.
GPIO.setup(25, GPIO.OUT)
Traceback (most recent call last):
File "Write.py", line 6, in <module>
reader = SimpleMFRC522.SimpleMFRC522()
File "/home/pi/MFRC522-python/SimpleMFRC522.py", line 14, in __init__
self.READER = MFRC522.MFRC522()
File "/home/pi/MFRC522-python/MFRC522.py", line 117, in __init__
self.MFRC522_Init()
File "/home/pi/MFRC522-python/MFRC522.py", line 390, in MFRC522_Init
self.MFRC522_Reset();
File "/home/pi/MFRC522-python/MFRC522.py", line 120, in MFRC522_Reset
self.Write_MFRC522(self.CommandReg, self.PCD_RESETPHASE)
File "/home/pi/MFRC522-python/MFRC522.py", line 123, in Write_MFRC522
spi.transfer(((addr<<1)&0x7E,val))
TypeError: function takes exactly 2 arguments (1 given)
这是Write.py文件:
#!/usr/bin/env python
import RPi.GPIO as GPIO
import SimpleMFRC522
reader = SimpleMFRC522.SimpleMFRC522()
try:
text = raw_input('New data:')
print("Now place your tag to write")
reader.write(text)
print("Written")
finally:
GPIO.cleanup()
我无法在任何地方找到解决这个问题的方法。已经尝试使用Python 3和其他库但我仍然得到错误。
更新:
在MFRC522.py文件上编辑:
def Write_MFRC522(self, addr, val):
spi.transfer( (addr<<1)&0x7E, val )
现在我得到这个输出:
/home/pi/MFRC522-python/MFRC522.py:115: RuntimeWarning: This channel is already in use, continuing anyway. Use GPIO.setwarnings(False) to disable warnings.
GPIO.setup(25, GPIO.OUT)
First argument must be a valid dictionary.: Success
Aborted
我有同样的问题至少2个小时...现在我发现,RC522的IRQ通道必须焊接到覆盆子PI的18针......我还更新了rc522上的焊接针脚,现在它可以工作了好..似乎是一个机械问题,没有软件问题..
这也有助于:https://github.com/ondryaso/pi-rc522
之前(错误消息):
pi@raspberrypi:~/MFRC522-python $ sudo python Write.py
/home/pi/MFRC522-python/MFRC522.py:115: RuntimeWarning: This channel is already in use, continuing anyway. Use GPIO.setwarnings(False) to disable warnings.
GPIO.setup(25, GPIO.OUT)
Traceback (most recent call last):
File "Write.py", line 6, in <module>
reader = SimpleMFRC522.SimpleMFRC522()
File "/home/pi/MFRC522-python/SimpleMFRC522.py", line 14, in __init__
self.READER = MFRC522.MFRC522()
File "/home/pi/MFRC522-python/MFRC522.py", line 117, in __init__
self.MFRC522_Init()
File "/home/pi/MFRC522-python/MFRC522.py", line 390, in MFRC522_Init
self.MFRC522_Reset();
File "/home/pi/MFRC522-python/MFRC522.py", line 120, in MFRC522_Reset
self.Write_MFRC522(self.CommandReg, self.PCD_RESETPHASE)
File "/home/pi/MFRC522-python/MFRC522.py", line 123, in Write_MFRC522
spi.transfer(((addr<<1)&0x7E,val))
TypeError: function takes exactly 2 arguments (1 given)
现在:
pi@raspberrypi:~ $ sudo python rfidreader2.py
/usr/local/lib/python2.7/dist-packages/pi_rc522-2.2.1-py2.7.egg/pirc522/rfid.py:78: RuntimeWarning: This channel is already in use, continuing anyway. Use GPIO.setwarnings(False) to disable warnings.
clean up
Tag detected
UID: [169, 112, 111, 72, 254]
Reading block 10: (False, [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0])
问题来自https://github.com/lthiery/SPI-Py库。如果你回滚到8cce26b9ee6e69eb041e9d5665944b88688fca68它应该工作
确保在回滚后再次运行安装程序。
git clone https://github.com/lthiery/SPI-Py.git
git checkout 8cce26b9ee6e69eb041e9d5665944b88688fca68
sudo python setup.py install
看看这里:https://github.com/lthiery/SPI-Py/issues/23我在更新SPI之后遇到同样的问题...
我有同样的问题 。我的解决方案是:
git clone https://github.com/lthiery/SPI-Py.git
cd SPI Py
sudo python setup.py install
它在这些命令之后工作
sudo python3 setup.py install