From db766f7814b0939e85568541c4e3a96a30b258de Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Erik=20Agsj=C3=B6?= <erik.agsjo@gmail.com>
Date: Thu, 1 Jun 2017 23:50:28 +0200
Subject: [PATCH] Made C.H.I.P PWM init robust for already enabled state
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Signed-off-by: Erik Agsjö <erik.agsjo@gmail.com>
---
 platforms/chip/chip_adaptor.go | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/platforms/chip/chip_adaptor.go b/platforms/chip/chip_adaptor.go
index 94c0b0fc..024548e2 100644
--- a/platforms/chip/chip_adaptor.go
+++ b/platforms/chip/chip_adaptor.go
@@ -179,6 +179,10 @@ func (c *Adaptor) PWMPin(pin string) (sysfsPin sysfs.PWMPinner, err error) {
 			if err = newPin.Export(); err != nil {
 				return
 			}
+			// Make sure pwm is disabled when setting polarity
+			if err = newPin.Enable(false); err != nil {
+				return
+			}
 			if err = newPin.InvertPolarity(false); err != nil {
 				return
 			}