From 6699d76512ad4250e3ed1d65ec51b824069cce9e Mon Sep 17 00:00:00 2001
From: dean <deanm1278@gmail.com>
Date: Mon, 25 Jun 2018 14:57:40 -0400
Subject: [PATCH] DM: explicitly set pwm freq

---
 adafruit_motor/stepper.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/adafruit_motor/stepper.py b/adafruit_motor/stepper.py
index 48eb3d1..3b6e106 100644
--- a/adafruit_motor/stepper.py
+++ b/adafruit_motor/stepper.py
@@ -73,6 +73,10 @@ class StepperMotor:
     def __init__(self, ain1, ain2, bin1, bin2, *, microsteps=16):
         self._coil = (ain2, bin1, ain1, bin2)
 
+	# set a safe pwm freq for each output
+        for i in range(4):
+            self._coil[i].frequency = 2000
+
         self._current_microstep = 0
         if microsteps < 2:
             raise ValueError("Microsteps must be at least 2")