From: Matt Mullins <mmullins@mmlx.us>
Date: Sun, 23 Dec 2012 17:33:52 +0000 (-0800)
Subject: DEN (Digital ENable) is required for digital I/O
X-Git-Url: http://git.mmlx.us/?a=commitdiff_plain;h=d2dc35604da5a58300558abc6f3e9bcc886652f9;p=stellaris%2Fled_blink.git

DEN (Digital ENable) is required for digital I/O

Even for alternate I/O pin functions.
---

diff --git a/main.c b/main.c
index 3588743..4cfd891 100644
--- a/main.c
+++ b/main.c
@@ -42,6 +42,7 @@ void main_isr() {
 	GPIO_PORTA_AFSEL_R = 0x03;
 	GPIO_PORTA_DR2R_R = 0x03;
 	GPIO_PORTA_PCTL_R = 0x11;
+	GPIO_PORTA_DEN_R = 0x03;
 
 	// Set 115200bps
 	UART0_IBRD_R = 43;