run config-pin to set pin mux for qep

Author: pdp7

Adafruit_BBIO/Encoder.py

@@ -52,6 +52,7 @@
 # config-pin P8.42 qep 
 # cat /sys/devices/platform/ocp/48304000.epwmss/48304180.eqep/position
 
+from subprocess import call
 import os
 
 class QEP :
@@ -99,7 +100,25 @@ class RotaryEncoder(object):
   EQEP1 = 1
   EQEP2 = 2
   EQEP2b = 3
-    
+ 
+  def config_pin(self, pin):
+    '''
+    config_pin()
+    Config pin for QEP
+    '''
+    result = call(["config-pin", pin, "qep"])
+    print "config_pin> pin={0} result={1}".format(pin, result)
+    return result
+  
+  def cat_file(self, path):
+    '''
+    cat_file()
+    Print contents of file
+    '''
+    result = call(["cat", path])
+    print "cat_file> path={0} result={1}".format(path, result)
+    return result
+   
   def __init__(self, eqep_num):
     '''
     RotaryEncoder(eqep_num)
@@ -108,6 +127,58 @@ def __init__(self, eqep_num):
     eqep_num can be: EQEP0, EQEP1, EQEP2 or EQEP2b based on which pins \
     the rotary encoder is connected to.
     '''
+    print ">>>>>>>> TEST CALL BEGIN"
+
+    ###################################
+    print ">>>>>> eqep0: P9_27, P9_92"
+    pin = "P9_27"
+    self.config_pin(pin)
+
+    pin = "P9_92"
+    self.config_pin(pin)
+
+    path = "/sys/devices/platform/ocp/48300000.epwmss/48300180.eqep/position"
+    self.cat_file(path);
+
+    ###################################
+    print ">>>>>>> eqep1: P8.33, P8.35"
+
+    pin = "P8.33"
+    self.config_pin(pin)
+
+    pin = "P8.35"
+    self.config_pin(pin)
+
+    path = "/sys/devices/platform/ocp/48302000.epwmss/48302180.eqep/position"
+    self.cat_file(path);
+
+    ###################################
+    print ">>>>>>> eqep2: P8.11, P8.12"
+
+    pin = "P8.11"
+    self.config_pin(pin)
+
+    pin = "P8.12"
+    self.config_pin(pin)
+
+    path = "/sys/devices/platform/ocp/48304000.epwmss/48304180.eqep/position"
+    self.cat_file(path);
+
+    ###################################
+    print ">>>>>>> eqep2b: P8.41, P8.42"
+
+    pin = "P8.41"
+    self.config_pin(pin)
+
+    pin = "P8.42"
+    self.config_pin(pin)
+
+    path = "/sys/devices/platform/ocp/48304000.epwmss/48304180.eqep/position"
+    self.cat_file(path);
+
+    ###################################
+    print ">>>>>>>> TEST CALL END"
+
     print("RotaryEncoder(): eqep_num: {0}".format(eqep_num))
     print("RotaryEncoder(): self._eqep_dirs[0]: {0}".format(self._eqep_dirs[0]))
     print("RotaryEncoder(): self._eqep_dirs[1]: {0}".format(self._eqep_dirs[1]))
@@ -117,7 +188,7 @@ def __init__(self, eqep_num):
     self.base_dir = self._eqep_dirs[eqep_num]
     print("RotaryEncoder(): self.base_dir: {0}".format(self.base_dir))
     self.enable()
-    
+
   def enable(self):
     '''
     enable()