I'm trying to use the encoders via Python:
from Adafruit_BBIO.Encoder import RotaryEncoder, eQEP2
import time
# Instantiate the class to access channel eQEP2, and initialize
# that channel
myEncoder = RotaryEncoder(eQEP2)
# Get the current position
while True:
cur_position = myEncoder.position
print(cur_position)
time.sleep(1)
But I get the following error:
Traceback (most recent call last):
File "./eQEP.py", line 8, in <module>
myEncoder = RotaryEncoder(eQEP2)
File
"/usr/local/lib/python3.7/dist-packages/Adafruit_BBIO-1.1.1-py3.7-linux-armv7l.egg/Adafruit_BBIO/Encoder.py"
, line 195, in __init__
self._eqep = _eQEP.fromdict(_eQEP_DEFS[eqep_num])
File
"/usr/local/lib/python3.7/dist-packages/Adafruit_BBIO-1.1.1-py3.7-linux-armv7l.egg/Adafruit_BBIO/Encoder.py"
, line 126, in fromdict
return cls(**df)
File
"/usr/local/lib/python3.7/dist-packages/Adafruit_BBIO-1.1.1-py3.7-linux-armv7l.egg/Adafruit_BBIO/Encoder.py"
, line 150, in __init__
self.node = Node(sys_path)
File
"/usr/local/lib/python3.7/dist-packages/Adafruit_BBIO-1.1.1-py3.7-linux-armv7l.egg/Adafruit_BBIO/sysfs.py"
, line 78, in __init__
self.__dict__.update(dict.fromkeys(listdir(self._path_)))
FileNotFoundError: [Errno 2] No such file or directory:
'/sys/devices/platform/ocp/48304000.epwmss/48304180.eqep'
I'm running a current image:
cat /ID.txt
BeagleBoard.org Debian Buster IoT Image 2020-04-06
name -a
Linux pocket 4.19.94-ti-r42 #1buster SMP PREEMPT Tue Mar 31 19:38:29 UTC
2020 armv7l GNU/Linux
Any suggestions on how to make it work?
--Mark
--
For more options, visit http://beagleboard.org/discuss
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