Merge pull request #216 from binhollc/master

[Adafruit_Blinka-hackapet.git] / src / adafruit_blinka / microcontroller / nova / pwmout.py

diff --git a/src/adafruit_blinka/microcontroller/nova/pwmout.py b/src/adafruit_blinka/microcontroller/nova/pwmout.py
index 57aa0e514d561a1425f052001f24b28fe8eaea23..6af2de87e9bfffffa2b2ca800f1395803e7a3906 100644 (file)
--- a/src/adafruit_blinka/microcontroller/nova/pwmout.py
+++ b/src/adafruit_blinka/microcontroller/nova/pwmout.py
@@ -1,5 +1,3 @@
-import os
-import digitalio
 
 try:
     from microcontroller.pin import pwmOuts
@@ -38,21 +36,10 @@ class PWMOut(object):
 
         """
         if PWMOut._nova is None:
-            if Pin._nova is not None:
-                # check if Pin already connected to Binho Nova
-                PWMOut._nova = Pin._nova
-            else:
-                from binhoHostAdapter import binhoHostAdapter
-                from binhoHostAdapter import binhoUtilities
-
-                utilities = binhoUtilities.binhoUtilities()
-                devices = utilities.listAvailableDevices()
-
-                if len(devices) > 0:
-                    PWMOut._nova = binhoHostAdapter.binhoHostAdapter(devices[0])
-                else:
-                    raise RuntimeError('No Binho Host Adapter found!')
+            from adafruit_blinka.microcontroller.nova import Connection
+            PWMOut._nova = Connection.getInstance()
 
+        PWMOut._nova.setOperationMode(0, 'IO')
         self._pwmpin = None
         self._open(pin, duty_cycle, frequency, variable_frequency)
 
@@ -80,7 +67,6 @@ class PWMOut(object):
 
         # set frequency
         self.frequency = freq
-        PWMOut._nova.setIOpinPWMFreq(self._pwmpin, self.frequency)
         # set period
         self._period = self._get_period()
 
@@ -90,27 +76,20 @@ class PWMOut(object):
         self._set_enabled(True)
 
     def deinit(self):
-      try:
-        """Deinit the Nova PWM."""
-        if self._channel is not None:
-            #self.duty_cycle = 0
-            self._set_enabled(False) # make to disable before unexport
-            """
-            try:
-                #unexport_path = os.path.join(channel_path, self._unexport_path)
-                with open(os.path.join(channel_path, self._unexport_path), "w") as f_unexport:
-                    f_unexport.write("%d\n" % self._pwmpin)
-            except IOError as e:
-                raise PWMError(e.errno, "Unexporting PWM pin: " + e.strerror)
-                """
-      except Exception as e:
-          # due to a race condition for which I have not yet been
-          # able to find the root cause, deinit() often fails
-          # but it does not effect future usage of the pwm pin
-          print("warning: failed to deinitialize pwm pin {0}:{1} due to: {2}\n".format(self._channel, self._pwmpin, type(e).__name__))
-      finally:
-          self._channel = None
-          self._pwmpin = None
+        try:
+            """Deinit the Nova PWM."""
+            if self._channel is not None:
+                #self.duty_cycle = 0
+                self._set_enabled(False) # make to disable before unexport
+
+        except Exception as e:
+            # due to a race condition for which I have not yet been
+            # able to find the root cause, deinit() often fails
+            # but it does not effect future usage of the pwm pin
+            print("warning: failed to deinitialize pwm pin {0}:{1} due to: {2}\n".format(self._channel, self._pwmpin, type(e).__name__))
+        finally:
+            self._channel = None
+            self._pwmpin = None
 
     def _is_deinited(self):
         if self._pwmpin is None: