From adae63b499a9de1edfd2c4f60abb3c344f50da45 Mon Sep 17 00:00:00 2001
From: Mika Tuupola <tuupola@appelsiini.net>
Date: Sun, 9 Oct 2011 01:43:30 +0300
Subject: [PATCH] Comments and whitespace.

---
 hello_uart/main.c | 1 +
 hello_uart/uart.c | 3 ++-
 hello_uart/uart.h | 4 +++-
 3 files changed, 6 insertions(+), 2 deletions(-)

diff --git a/hello_uart/main.c b/hello_uart/main.c
index 2b83ec2..646edaa 100644
--- a/hello_uart/main.c
+++ b/hello_uart/main.c
@@ -5,6 +5,7 @@
  * Led at Arduino digital 13 (PORTB5). Cause we all love blinken leds!
  *
  * To compile and upload run: make clean; make; make program;
+ * Connect to serial with: screen /dev/tty.usbserial-* 9600
  *
  * Copyright 2011 Mika Tuupola
  *
diff --git a/hello_uart/uart.c b/hello_uart/uart.c
index 8a033c4..19c2578 100644
--- a/hello_uart/uart.c
+++ b/hello_uart/uart.c
@@ -13,7 +13,7 @@ void uart_init(void) {
     UBRR0L = UBRRL_VALUE;
 
     UCSR0C = _BV(UCSZ01) | _BV(UCSZ00); /* 8-bit data */ 
-    UCSR0B = _BV(RXEN0) | _BV(TXEN0);   /* Enable RX and TX */
+    UCSR0B = _BV(RXEN0) | _BV(TXEN0);   /* Enable RX and TX */    
 }
 
 int uart_putchar(char c, FILE *stream) {
@@ -30,3 +30,4 @@ int uart_getchar(FILE *stream) {
     return UDR0;
 }
 
+
diff --git a/hello_uart/uart.h b/hello_uart/uart.h
index cf8fad5..3c2e1fa 100644
--- a/hello_uart/uart.h
+++ b/hello_uart/uart.h
@@ -3,5 +3,7 @@ int uart_getchar(FILE *stream);
 
 void uart_init(void);
 
+/* http://www.ermicro.com/blog/?p=325 */
+
 FILE uart_output = FDEV_SETUP_STREAM(uart_putchar, NULL, _FDEV_SETUP_WRITE);
-FILE uart_input = FDEV_SETUP_STREAM(NULL, uart_getchar, _FDEV_SETUP_READ);
\ No newline at end of file
+FILE uart_input = FDEV_SETUP_STREAM(NULL, uart_getchar, _FDEV_SETUP_READ);