Board-specific LED logic moved to board-specific directory
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@161 42af7a65-404d-4744-a932-0658087f49c3
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/************************************************************
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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 RESET_KLUDGE_NEEDED 1
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/************************************************************
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* Private Data
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************************************************************/
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static ubyte g_ledstate;
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/************************************************************
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* Private Functions
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************************************************************/
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#if defined(CONFIG_LED_DEBUG) && defined(CONFIG_ARCH_LEDS)
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static void _up_puthex(ubyte hex) __naked
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{
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hex; /* To avoid unreferenced argument warning */
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_asm
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mov a, dpl
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ljmp PM2_ENTRY_PHEX
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_endasm;
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}
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static void _up_putch(ubyte ch) __naked
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{
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_asm
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mov a, dpl
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ljmp PM2_ENTRY_COUT
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_endasm;
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}
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static void _up_putnl(void) __naked
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{
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_asm
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ljmp PM2_ENTRY_NEWLINE
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_endasm;
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}
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# define _up_showledinit() \
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_up_putch('I'); \
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_up_puthex(g_ledstate); _up_putch(':'); \
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_up_puthex(p82c55_port_e); _up_putnl();
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# define _up_showledreset() \
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_up_putch('R'); \
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_up_puthex(led); _up_putch(':'); \
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_up_puthex(g_ledstate); _up_putch(':'); \
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_up_puthex(p82c55_port_e); _up_putnl();
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# define _up_showledon() \
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_up_putch('+'); \
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_up_puthex(led); _up_putch(':'); \
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_up_puthex(g_ledstate); _up_putch(':'); \
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_up_puthex(p82c55_port_e); _up_putnl();
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# define _up_showledoff() \
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_up_putch('-'); \
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_up_puthex(led); _up_putch(':'); \
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_up_puthex(g_ledstate); _up_putch(':'); \
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_up_puthex(p82c55_port_e); _up_putnl();
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#else
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# define _up_showledinit()
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# define _up_showledreset()
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# define _up_showledon()
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# define _up_showledoff()
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#endif
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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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/* Set all ports as outputs */
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p82c55_def_config = 128;
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/* Turn LED 1-7 off; turn LED 0 on */
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g_ledstate = 0xfe;
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p82c55_port_e = g_ledstate;
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_up_showledinit();
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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(ubyte led)
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{
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/* This may be called from an interrupt handler */
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irqstate_t flags = irqsave();
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#ifdef RESET_KLUDGE_NEEDED
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/* I don't understand why this happens yet, but sometimes
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* it is necessary to reconfigure port E.
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*/
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if (g_ledstate != p82c55_port_e)
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{
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_up_showledreset();
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p82c55_def_config = 128;
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}
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#endif
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/* Clear the bit in port E corresponding to LED to turn it on */
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if (led < 8)
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{
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g_ledstate &= ~(g_ntobit[led]);
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p82c55_port_e = g_ledstate;
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}
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_up_showledon();
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irqrestore(flags);
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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(ubyte led)
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{
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/* This may be called from an interrupt handler */
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irqstate_t flags = irqsave();
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#ifdef RESET_KLUDGE_NEEDED
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/* I don't understand why this happens yet, but sometimes
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* it is necessary to reconfigure port E.
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*/
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if (g_ledstate != p82c55_port_e)
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{
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_up_showledreset();
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p82c55_def_config = 128;
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}
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#endif
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/* Set the bit in port E corresponding to LED to turn it off */
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if (led < 8)
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{
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g_ledstate |= g_ntobit[led];
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p82c55_port_e = g_ledstate;
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}
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_up_showledoff();
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irqrestore(flags);
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}
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#endif /* CONFIG_ARCH_LEDS */
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