openpilot v0.9.6 release

date: 2024-02-21T23:02:42
master commit: 0b4d08fab8e35a264bc7383e878538f8083c33e5

common/filter_simple.py

@@ -0,0 +1,18 @@
+class FirstOrderFilter:
+  # first order filter
+  def __init__(self, x0, rc, dt, initialized=True):
+    self.x = x0
+    self.dt = dt
+    self.update_alpha(rc)
+    self.initialized = initialized
+
+  def update_alpha(self, rc):
+    self.alpha = self.dt / (rc + self.dt)
+
+  def update(self, x):
+    if self.initialized:
+      self.x = (1. - self.alpha) * self.x + self.alpha * x
+    else:
+      self.initialized = True
+      self.x = x
+    return self.x