Updates to motor controller code

This includes new calibration numbers, and various updates made to
enable gathering those. Also includes updates to the PWM generator.

Change-Id: I2712c04b8427419c318174b6934587a1ea7ff997
diff --git a/motors/python/big_phase_current.py b/motors/python/big_phase_current.py
index 5ddca2a..6b51704 100755
--- a/motors/python/big_phase_current.py
+++ b/motors/python/big_phase_current.py
@@ -17,9 +17,9 @@
 K1 = 1
 
 vcc = 31.5  # volts
-R = 0.01008  # ohms for system
+R = 0.0079  # ohms for system
 
-L = 3.0 * 1e-6  # Henries
+L = 5.0 * 1e-6  # Henries
 M = 0.0
 
 Kv_vcc = 30.0