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/****************************************************************************
* configs/olimex-strp711/src/up_leds.c
*
* Copyright (C) 2008-2009 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 NuttX 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 <stdint.h>
#include <arch/board/board.h>
#include "chip.h"
#include "up_arch.h"
#include "up_internal.h"
/****************************************************************************
* Definitions
****************************************************************************/
/* There are two LEDs are connected to P1.8 & 9 */
#if defined(CONFIG_ARCH_LEDS) && !defined(CONFIG_STR71X_GPIO1)
# error "LEDs require GPIO1"
#endif
#define STR71X_LED1GPIO1_BIT (0x0100)
#define STR71X_LED2GPIO1_BIT (0x0200)
#define STR71X_LEDGPIO1_BITS (STR71X_LED1GPIO1_BIT|STR71X_LED2GPIO1_BIT)
/****************************************************************************
* Private Data
****************************************************************************/
static uint16_t g_led2set;
static uint16_t g_led2clr;
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: up_setleds
****************************************************************************/
static void up_setleds(uint16_t setbits, uint16_t clearbits)
{
uint16_t reg16;
/* Save the state of LED2 for later */
g_led2set = setbits & STR71X_LED2GPIO1_BIT;
g_led2clr = clearbits & STR71X_LED2GPIO1_BIT;
/* Set and clear bits as directed */
reg16 = getreg16(STR71X_GPIO1_PD);
reg16 &= ~clearbits;
reg16 |= setbits;
putreg16(reg16, STR71X_GPIO1_PD);
}
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: up_ledinit
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
void up_ledinit(void)
{
uint16_t reg16;
/* Set normal function output */
reg16 = getreg16(STR71X_GPIO1_PC0);
reg16 |= STR71X_LEDGPIO1_BITS;
putreg16(reg16, STR71X_GPIO1_PC0);
reg16 = getreg16(STR71X_GPIO1_PC1);
reg16 &= ~STR71X_LEDGPIO1_BITS;
putreg16(reg16, STR71X_GPIO1_PC1);
reg16 = getreg16(STR71X_GPIO1_PC2);
reg16 |= STR71X_LEDGPIO1_BITS;
putreg16(reg16, STR71X_GPIO1_PC2);
/* Clear the LEDs (1 clears; 0 sets) */
reg16 = getreg16(STR71X_GPIO1_PD);
reg16 |= STR71X_LEDGPIO1_BITS;
putreg16(reg16, STR71X_GPIO1_PD);
}
/****************************************************************************
* Name: up_ledon
****************************************************************************/
void up_ledon(int led)
{
/* The Olimex board has only two LEDs, so following states are faked as
* follows
*
* SET CLEAR
* LED_STARTED (none) (n/a)
* LED_HEAPALLOCATE LED1 (n/a)
* LED_IRQSENABLED LED1 (n/a)
* LED_STACKCREATED LED1 (n/a)
* LED_INIRQ LED1+LED2 LED1
* LED_SIGNAL LED1+LED2 LED1
* LED_ASSERTION LED1+LED2 LED1
* LED_PANIC LED1+LED2* LED1
*
* *The previous state of LED2 will be retained
*/
switch (led)
{
default:
case LED_STARTED:
up_setleds(0, STR71X_LED1GPIO1_BIT|STR71X_LED2GPIO1_BIT); /* Clear LED1&2 */
break;
case LED_HEAPALLOCATE:
case LED_IRQSENABLED:
case LED_STACKCREATED:
up_setleds(STR71X_LED1GPIO1_BIT, STR71X_LED2GPIO1_BIT); /* Set LED1, clear LED2 */
break;
case LED_INIRQ:
case LED_SIGNAL:
case LED_ASSERTION:
up_setleds(STR71X_LED1GPIO1_BIT|STR71X_LED2GPIO1_BIT, 0); /* Set LED1&2 */
break;
case LED_PANIC:
up_setleds(STR71X_LED2GPIO1_BIT|g_led2set, g_led2set); /* Set LED1, preserve LED2 */
break;
}
}
/****************************************************************************
* Name: up_ledoff
****************************************************************************/
void up_ledoff(int led)
{
/* The Olimex board has only two LEDs, so following states are faked as
* follows
*
* SET CLEAR
* LED_STARTED (none) (n/a)
* LED_HEAPALLOCATE LED1 (n/a)
* LED_IRQSENABLED LED1 (n/a)
* LED_STACKCREATED LED1 (n/a)
* LED_INIRQ LED1+LED2 LED1
* LED_SIGNAL LED1+LED2 LED1
* LED_ASSERTION LED1+LED2 LED1
* LED_PANIC LED1+LED2* LED1
*
* *The previous state of LED2 will be retained
*/
switch (led)
{
default:
case LED_STARTED:
case LED_HEAPALLOCATE:
case LED_IRQSENABLED:
case LED_STACKCREATED:
break;
case LED_INIRQ:
case LED_SIGNAL:
case LED_ASSERTION:
up_setleds(STR71X_LED1GPIO1_BIT, STR71X_LED2GPIO1_BIT); /* Set LED1, clear LED2 */
break;
case LED_PANIC:
up_setleds(g_led2set, STR71X_LED1GPIO1_BIT|g_led2clr); /* Clear LED1, preserve LED2 */
break;
}
}
#endif /* CONFIG_ARCH_LEDS */
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