Changeset 4679

Timestamp:

09/29/08 02:33:55 (5 years ago)

Author:

werner

Message:

Highlights:

• new module phosphor.py to view how often patterns repeat
• example eye.py to plot an eye diagram with phosphor.py

Details:

• lib/wave.py (analog, digital): moved binary search by time from "get_one" into new method "index"
• lib/trigger.py (edge.apply): returned a false trigger at the start of the recording when using slope.Both
• lib/phosphor.py: "phosphor" screen that remembers how often a pixel was drawn
• demo/eye.py: example for drawing an eye diagram with phosphor.py

Location:

developers/werner/ahrt/host/tmc

Files:

• demo/eye.py (added)
• lib/phosphor.py (added)
• lib/trigger.py (modified) (1 diff)
• lib/wave.py (modified) (2 diffs)

developers/werner/ahrt/host/tmc/lib/trigger.py

@@ -110 +110 @@
             return []
         if self.slope == slope.Both:
-            return wave.data[:]
+            return wave.data[1:]
         res = []
         i = int(wave.initial ^ self.slope == slope.Falling)+1

developers/werner/ahrt/host/tmc/lib/wave.py

@@ -345 +345 @@
         self.data.extend(wave.data)
 
+    def index(self, t):
+        if len(self.data) == 0 or t < self.data[0][0] or t > self.data[-1][0]:
+            raise hell
+        return binary(self.data, lambda x: x[0], t)
+
     def get_one(self, t):
-        if len(self.data) == 0 or t < self.data[0][0] or t > self.data[-1][0]:
-            raise hell
-        return self.data[binary(self.data, lambda x: x[0], t)]
+        return self.data[self.index(t)]
 
     def __iter__(self):
@@ -435 +438 @@
         self.t_end = wave.t_end
 
+    def index(self, t):
+        if len(self.data) == 0 or t < self.data[0] or t > self.t_end:
+            raise hell
+        return binary(self.data, lambda x: x, t)
+
     def get_one(self, t):
         if len(self.data) == 0 or t < self.data[0] or t > self.t_end:
             raise hell
-        return int(self.initial ^
-          (binary(self.data, lambda x: x, t) & 1))
+        return int(self.initial ^ (self.index(t) & 1))
 
     # experimental