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author | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-04-29 21:29:30 +0000 |
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committer | patacongo <patacongo@42af7a65-404d-4744-a932-0658087f49c3> | 2007-04-29 21:29:30 +0000 |
commit | 6463ba69dad3e46bde7b61c0d31262fd26a954b8 (patch) | |
tree | 5e00202991a2ea33cf79ac787e6c28c209bcae66 /nuttx/arch/arm/src/lpc214x/lpc214x_lowputc.S | |
parent | d712452b2adfbdd2b6aaee11e88b176f8911d718 (diff) | |
download | px4-nuttx-6463ba69dad3e46bde7b61c0d31262fd26a954b8.tar.gz px4-nuttx-6463ba69dad3e46bde7b61c0d31262fd26a954b8.tar.bz2 px4-nuttx-6463ba69dad3e46bde7b61c0d31262fd26a954b8.zip |
Initial lpc214x support
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@193 42af7a65-404d-4744-a932-0658087f49c3
Diffstat (limited to 'nuttx/arch/arm/src/lpc214x/lpc214x_lowputc.S')
-rw-r--r-- | nuttx/arch/arm/src/lpc214x/lpc214x_lowputc.S | 91 |
1 files changed, 91 insertions, 0 deletions
diff --git a/nuttx/arch/arm/src/lpc214x/lpc214x_lowputc.S b/nuttx/arch/arm/src/lpc214x/lpc214x_lowputc.S new file mode 100644 index 000000000..8096ed3e9 --- /dev/null +++ b/nuttx/arch/arm/src/lpc214x/lpc214x_lowputc.S @@ -0,0 +1,91 @@ +/************************************************************************** + * lpc214x/lpc214X_lowputc.S + * + * Copyright (C) 2007 Gregory Nutt. All rights reserved. + * Author: Gregory Nutt <spudmonkey@racsa.co.cr> + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * 3. Neither the name Gregory Nutt nor the names of its contributors may be + * used to endorse or promote products derived from this software + * without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS + * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE + * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, + * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS + * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED + * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN + * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE + * POSSIBILITY OF SUCH DAMAGE. + * + **************************************************************************/ + +/************************************************************************** + * Included Files + **************************************************************************/ + +#include <nuttx/config.h> +#include "up_internal.h" +#include "up_arch.h" + +/************************************************************************** + * Private Definitions + **************************************************************************/ + +/************************************************************************** + * Private Types + **************************************************************************/ + +/************************************************************************** + * Private Function Prototypes + **************************************************************************/ + +/************************************************************************** + * Global Variables + **************************************************************************/ + +/************************************************************************** + * Private Variables + **************************************************************************/ + +/************************************************************************** + * Private Functions + **************************************************************************/ + +/************************************************************************** + * Public Functions + **************************************************************************/ + +/************************************************************************** + * Name: up_lowputc + **************************************************************************/ + +/* This assembly language version has the advantage that it can does not + * require a C stack and uses only r0-r1. Hence it can be used during + * early boot phases. + */ + + .text + .global up_lowputc + .type up_lowputc, function +up_lowputc: + /* On entry, r0 holds the character to be printed */ +#warning "Not implemented" + + /* And return */ + + mov pc, lr + .end |