From f4747d8209ac624764b34f0f0197dd714dad5f9b Mon Sep 17 00:00:00 2001
From: "R. Steve McKown" <rsmckown@gmail.com>
Date: Tue, 6 Dec 2011 09:30:47 -0700
Subject: [PATCH] Use internal uc pull-ups for IO pins.

This allows removal of the three external pull-up resistors in the circuit.
---
 buttons.h | 1 +
 1 file changed, 1 insertion(+)

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; \
-- 
2.39.2