ad91dc351e
git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@5145 42af7a65-404d-4744-a932-0658087f49c3
175 lines
5.3 KiB
C
175 lines
5.3 KiB
C
/****************************************************************************
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* configs/ez80f910200zco/src/ez80_leds.c
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*
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* Copyright (C) 2008-2009 Gregory Nutt. All rights reserved.
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* Author: Gregory Nutt <gnutt@nuttx.org>
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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 NuttX 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 <stdint.h>
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#include <nuttx/irq.h>
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#include "chip.h"
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#include "up_arch.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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/****************************************************************************
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* Private Data
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****************************************************************************/
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/****************************************************************************
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* Private Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_PB/1/2interrupt
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*
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* Description:
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* These could be exteneded to provide interrupt driven button input
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*
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****************************************************************************/
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#if 0
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void up_PBinterrupt(void)
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{
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uint8_t regval;
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regval = inp(EZ80_PB_DR); /* Clear interrupt flag for eZ80F91 date codes before 0611 */
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regval |= 7;
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outp(EZ80_PB_DR, regval);
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regval = inp(EZ80_PB_ALT0); /* Clear interrupt flag for eZ80F91 date codes 0611 and after */
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regval |= 1;
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outp(EZ80_PB_ALT0, regval);
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}
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void up_pb1interrupt(void)
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{
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uint8_t regval;
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regval = inp(EZ80_PB_DR); /* Clear interrupt flag for eZ80F91 date codes before 0611 */
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regval |= 7;
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outp(EZ80_PB_DR, regval);
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regval = inp(EZ80_PB_ALT0); /* Clear interrupt flag for eZ80F91 date codes 0611 and after */
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regval |= 2;
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outp(EZ80_PB_ALT0, regval);
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}
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void up_pb2interrupt(void)
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{
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uint8_t regval;
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regval = inp(EZ80_PB_DR); /* Clear interrupt flag for eZ80F91 date codes before 0611 */
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regval |= 7;
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outp(EZ80_PB_DR, regval);
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regval = inp(EZ80_PB_ALT0);
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regval |= 4;
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outp(EZ80_PB_ALT0, regval); /* Clear interrupt flag for eZ80F91 date codes 0611 and after */
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}
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#endif
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: up_buttoninit
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****************************************************************************/
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#ifdef CONFIG_ARCH_BUTTONS
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void up_buttoninit(void)
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{
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uint8_t regval;
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#if 0 /* Interrupts are not used */
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/* Attach GIO interrupts */
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irq_attach(EZ80_PB_IRQ, up_PBinterrupt);
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irq_attach(EZ80_PB1_IRQ, up_pb1interrupt);
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irq_attach(EZ80_PB2_IRQ, up_pb2interrupt);
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/* Configure PB0,1,2 as interrupt, rising edge */
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regval = inp(EZ80_PB_DR);
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regval |= 7;
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outp(EZ80_PB_DR, regval);
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regval = inp(EZ80_PB_DDR);
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regval |= 7;
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outp(EZ80_PB_DDR, regval);
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regval = inp(EZ80_PB_ALT1);
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regval |= 7;
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outp(EZ80_PB_ALT1, regval);
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regval = inp(EZ80_PB_ALT2);
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regval |= 7;
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outp(EZ80_PB_ALT2, regval);
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#else
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/* Configure PB0,1,2 as inputs */
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regval = inp(EZ80_PB_DDR);
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regval |= 7;
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outp(EZ80_PB_DDR, regval);
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regval = inp(EZ80_PB_ALT1);
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regval &= ~7;
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outp(EZ80_PB_ALT1, regval);
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regval = inp(EZ80_PB_ALT2);
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regval &= ~7;
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outp(EZ80_PB_ALT2, regval);
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#endif
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}
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/****************************************************************************
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* Name: up_buttons
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****************************************************************************/
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uint8_t up_buttons(void)
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{
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return inp(EZ80_PB_DDR) & 7;
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}
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#endif /* CONFIG_ARCH_BUTTONS */
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