From ffd43886dc902f3bb7407294018e3d62cac39480 Mon Sep 17 00:00:00 2001
From: Keith Packard <keithp@keithp.com>
Date: Wed, 25 Mar 2009 00:55:11 -0700
Subject: [PATCH] Check serial input

---
 target/serial/serial.c | 16 ++++++++++++++--
 1 file changed, 14 insertions(+), 2 deletions(-)

diff --git a/target/serial/serial.c b/target/serial/serial.c
index ebe7e2fc..29390426 100644
--- a/target/serial/serial.c
+++ b/target/serial/serial.c
@@ -241,6 +241,18 @@ usart_in_byte(void)
 	return b;
 }
 
+void
+debug_byte(uint8_t byte)
+{
+	uint8_t s;
+
+	for (s = 0; s < 8; s++) {
+		DEBUG = byte & 1;
+		delay(5);
+		byte >>= 1;
+	}
+}
+
 main ()
 {
 	P1DIR |= 2;
@@ -252,7 +264,7 @@ main ()
 
 	for (;;) {
 		usart_out_string("hello world\r\n");
-		delay(5);
-		P1 ^= 2;
+		debug_byte(usart_in_byte());
 	}
+	
 }
-- 
2.30.2