From 1938cfbd7e08b15a7f3ee269c2d523d29adbdafd Mon Sep 17 00:00:00 2001
From: tkl <tkl@blackfinn.de>
Date: Tue, 2 Aug 2016 14:23:59 +0200
Subject: [PATCH] echo on shell

---
 source/firmware/kernel/shell.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/source/firmware/kernel/shell.c b/source/firmware/kernel/shell.c
index 1edfd13..0cfdba2 100644
--- a/source/firmware/kernel/shell.c
+++ b/source/firmware/kernel/shell.c
@@ -44,17 +44,19 @@ static void parse(const char *buffer, unsigned int len)
 
 static void rx_func(void *arg)
 {
-	char buffer[80];
+	char buffer[81];
 	unsigned int index = 0;
 	int ret = 0;
 	open(shell_object.shell_device);
 	while(1) {
 		ret = read(shell_object.shell_device, &buffer[index],
-				sizeof(buffer) / sizeof(buffer[0]) - index);
+				sizeof(buffer) / sizeof(buffer[0]) - index - 1);
 		if(ret) {
+			write(shell_object.shell_device, &buffer[index], ret);	// echo
 			if((buffer[index + ret - 1] == '\n') || (buffer[index + ret - 1] == '\r')) {
 				buffer[index + ret - 1] = '\n';
 				parse(buffer, index + ret);
+				buffer[index + ret] = '\0';
 				index = 0;
 			}
 			else