iono pi max demo (drums)

+ fix spacing in ionopimax.py

cfg/drums_cfg.py

@@ -0,0 +1,27 @@
+Node('relais.psi.ch',
+     'relais test',
+     'tcp://5000',
+)
+
+Mod('rl',
+    'frappy_psi.ionopimax.DigitalOutput',
+    'left relais',
+    addr = 'o1',
+    value = 0,  # start with relais off
+   )
+
+Mod('rr',
+    'frappy_psi.ionopimax.DigitalOutput',
+    'right relais',
+    addr = 'o2',
+    value = 0,  # start with relais off
+   )
+
+Mod('drummer',
+    'frappy_psi.drums.Drums',
+    'drummer',
+    target = 150,
+    pattern='l2L2rl1R1L2',
+    left='rl',
+    right='rr',
+)

frappy_psi/drums.py

@@ -0,0 +1,65 @@
+# *****************************************************************************
+# This program is free software; you can redistribute it and/or modify it under
+# the terms of the GNU General Public License as published by the Free Software
+# Foundation; either version 2 of the License, or (at your option) any later
+# version.
+#
+# This program is distributed in the hope that it will be useful, but WITHOUT
+# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
+# FOR A PARTICULAR PURPOSE.  See the GNU General Public License for more
+# details.
+#
+# You should have received a copy of the GNU General Public License along with
+# this program; if not, write to the Free Software Foundation, Inc.,
+# 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+#
+# Module authors:
+#   Markus Zolliker <markus.zolliker@psi.ch>
+# *****************************************************************************
+"""iono pi max relais drums
+
+for demo purposes
+"""
+
+from frappy.core import Module, Attached, FloatRange, StringType, Writable, Parameter
+
+
+class Drums(Writable):
+    target = Parameter('drum speed', FloatRange(unit='beats/min'))
+    left = Attached(Writable)
+    right = Attached(Writable)
+    pollinterval = Parameter('drum interval', FloatRange(0, 10, unit='s'), readonly=False)
+    pattern = Parameter('''pattern
+
+                        a string containing:
+                        L,R: left / right relais on
+                        l,r: left / right relais off
+                        blank: wait''', StringType(), readonly=False)
+    _pos = 0
+    _wait = 0
+
+    def initModule(self):
+        super().initModule()
+        self.actions = {'L': self.left, 'R': self.right}
+
+    def write_target(self, target):
+        self.pollinterval = 60 / max(1, target)
+        self.value = target
+
+    def doPoll(self):
+        if not self.target:
+            return
+        if self._wait:
+            self._wait -= 1
+            return
+        if self._pos >= len(self.pattern):
+            self._pos = 0
+        for i, action in enumerate(self.pattern[self._pos:]):
+            upper = action.upper()
+            relais = self.actions.get(action.upper())
+            if relais:
+                relais.write_target(upper == action)  # True when capital letter
+            else:
+                self._wait = int(action) - 1
+                self._pos += i + 1
+                return

frappy_psi/ionopimax.py

@@ -25,6 +25,7 @@ from math import log
 
 class Base:
     addr = Property('address', StringType())
+
     def read(self, addr, scale=None):
         with open(f'/sys/class/ionopimax/{self.devclass}/{addr}') as f:
             result = f.read()
@@ -67,7 +68,6 @@ class AnalogInput(Base, Readable):
         return y0 + (y1 - y0) * (self.x - x0) / (x1 - x0)
 
 
-
 class VoltageInput(AnalogInput):
     scale = 1e5
 
@@ -75,6 +75,7 @@ class VoltageInput(AnalogInput):
         super().initModule()
         self.write(f'{self.addr}_mode','U')
 
+
 class LogVoltageInput(VoltageInput):
 
     def read_value(self):
@@ -122,5 +123,3 @@ class VoltageOutput(AnalogOutput):
         self.write(f'{self.addr}_mode', 'V')
         self.write(f'{self.addr}', '0')
         self.write(f'{self.addr}_enabled', '1')
-
-