raspberry pi 3型号B和中国PN532无法通过SPI工作

Question

我通过SPI用SPI切换PN532 （在我使用rc522通过SPI测试RPI并且模块正常工作之前）

阅读代码https://github.com/adafruit/Adafruit_Python_PN532 例如/ readmifare.py

与线路的连接： 对于RPi3b

RPI         -        PN532

17 3.3v               VCC       
20 Ground             GND       
19 MOSI               MOSI     
21 MISO               MISO      
23 SCLK               SCK      
24 CE0                SS        
26 CE1  

我改变代码：

#Conf for RPi 3
CS = 24
MOSI = 19
MISO = 21
SCLK = 23

sudo python readmifare.py

Traceback (most recent call last):
  File "readmifare.py", line 54, in <module>
    pn532.begin()
  File "/home/pi/Adafruit_Python_PN532/examples/PN532.py", line 343, in begin
    self.get_firmware_version()
  File "/home/pi/Adafruit_Python_PN532/examples/PN532.py", line 352, in get_firmware_version
    raise RuntimeError('Failed to detect the PN532!  Make sure there is sufficient power (use a 1 amp or greater power supply), the PN532 is wired correctly to the device, and the solder joints on the PN532 headers are solidly connected.')
RuntimeError: Failed to detect the PN532!  Make sure there is sufficient power (use a 1 amp or greater power supply), the PN532 is wired correctly to the device, and the solder joints on the PN532 headers are solidly connected.