From: R. Steve McKown <rsmckown@gmail.com>
Date: Tue, 6 Dec 2011 16:30:47 +0000 (-0700)
Subject: Use internal uc pull-ups for IO pins.
X-Git-Tag: 1.0~58
X-Git-Url: https://oss.titaniummirror.com/gitweb?p=rgblamp.git;a=commitdiff_plain;h=f4747d8209ac624764b34f0f0197dd714dad5f9b

Use internal uc pull-ups for IO pins.

This allows removal of the three external pull-up resistors in the circuit.
---

diff --git a/buttons.h b/buttons.h
index 3138ecc..39b96e1 100644
--- a/buttons.h
+++ b/buttons.h
@@ -19,6 +19,7 @@
  * rocker switch positions.
  */
 #define buttons_init() do { \
+    nWPUEN = 0; /* enable weak pull-ups on PortB */ \
     IOCBN4 = 1; \
     IOCBN5 = 1; \
     TRISB |= IN_MASK; \