2c0ea36387
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@148 42af7a65-404d-4744-a932-0658087f49c3
108 lines
3.5 KiB
C
108 lines
3.5 KiB
C
/************************************************************
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* up_leds.c
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*
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* Copyright (C) 2007 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <spudmonkey@racsa.co.cr>
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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*
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in
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* the documentation and/or other materials provided with the
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* distribution.
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* 3. Neither the name Gregory Nutt nor the names of its contributors may be
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* used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
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* FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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* COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
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* OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
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* AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
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* ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*
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************************************************************/
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/************************************************************
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* Included Files
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************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include "up_internal.h"
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/************************************************************
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* Definitions
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************************************************************/
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#define CS2 *(volatile uint32*)0xffff2e08
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#define LEDS *(volatile uint32*)0x01000000
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/************************************************************
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* Private Data
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************************************************************/
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static uint32 g_ledstate;
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/************************************************************
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* Private Functions
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************************************************************/
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/************************************************************
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* Public Funtions
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************************************************************/
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/************************************************************
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* Name: up_ledinit
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************************************************************/
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#ifdef CONFIG_ARCH_LEDS
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void up_ledinit(void)
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{
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/* Enable access to LEDs */
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CS2 = 0x000013db;
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/* Turn LED 1-7 off; turn LED 0 on */
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g_ledstate = 0x000000fe;
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LEDS = g_ledstate;
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}
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/************************************************************
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* Name: up_ledon
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************************************************************/
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void up_ledon(int led)
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{
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if (led < 8)
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{
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g_ledstate &= ~(1 << led);
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LEDS = g_ledstate;
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}
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}
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/************************************************************
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* Name: up_ledoff
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************************************************************/
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void up_ledoff(int led)
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{
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if (led < 8)
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{
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g_ledstate |= (1 << led);
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LEDS = g_ledstate;
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}
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}
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#endif /* CONFIG_ARCH_LEDS */
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