I am trying to run such code from extension:
import max7219.led as led
device = led.sevensegment(cascaded=1)
device.clear(0)
device.brightness(0)
But I get errors:
2015-05-06 14:20:07,088 - ERROR [Errno 13] Permission denied
Traceback (most recent call last):
File “/usr/local/lib/python2.7/dist-packages/mopidy/main.py”, line 122, i$
extension.setup(registry)
File “/usr/local/lib/python2.7/dist-packages/extension/init.py”, $
device = led.sevensegment(cascaded=1)
File “/usr/local/lib/python2.7/dist-packages/max7219/led.py”, line 50, in __i$
self._spi.open(spi_bus, spi_device)
IOError: [Errno 13] Permission denied
Why is that? how could I fix this?