/****************************************************************************
* configs/nucleus2g/src/up_leds.c
*
* Copyright (C) 2010, 2013, 2015 Gregory Nutt. All rights reserved.
* Author: Gregory Nutt <gnutt@nuttx.org>
*
* 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 <stdbool.h>
#include <debug.h>
#include <nuttx/board.h>
#include <arch/board/board.h>
#include "chip.h"
#include "up_arch.h"
#include "up_internal.h"
#include "lpc17_gpio.h"
#include "nucleus2g_internal.h"
#ifdef CONFIG_ARCH_LEDS
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* CONFIG_DEBUG_LEDS enables debug output from this file (needs CONFIG_DEBUG
* with CONFIG_DEBUG_VERBOSE too)
*/
#ifdef CONFIG_DEBUG_LEDS
# define leddbg lldbg
# ifdef CONFIG_DEBUG_VERBOSE
# define ledvdbg lldbg
# else
# define ledvdbg(x...)
# endif
#else
# define leddbg(x...)
# define ledvdbg(x...)
#endif
/* Dump GPIO registers */
#if defined(CONFIG_DEBUG_VERBOSE) && defined(CONFIG_DEBUG_LEDS)
# define led_dumpgpio(m) lpc17_dumpgpio(NUCLEUS2G_LED1_A, m)
#else
# define led_dumpgpio(m)
#endif
/****************************************************************************
* Private Data
****************************************************************************/
/* The Nucleus2G has 3 LEDs... two on the Babel CAN board and a "heartbeat" LED."
* The LEDs on the Babel CAN board are capabl of OFF/GREEN/RED/AMBER status.
* In normal usage, the two LEDs on the Babel CAN board would show CAN status, but if
* CONFIG_ARCH_LEDS is defined, these LEDs will be controlled as follows for NuttX
* debug functionality (where NC means "No Change").
*
* LED1 LED2 HEARTBEAT
* +------- ------ -----------------------
* LED_STARTED | OFF OFF OFF
* LED_HEAPALLOCATE | GREEN OFF OFF
* LED_IRQSENABLED | OFF GREEN OFF
* LED_STACKCREATED | OFF OFF OFF
* LED_INIRQ | NC NC ON (momentary)
* LED_SIGNAL | NC NC ON (momentary)
* LED_ASSERTION | NC NC ON (momentary)
* LED_PANIC | NC NC ON (1Hz flashing)
*/
static bool g_initialized;
static int g_nestcount;
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_led_initialize
****************************************************************************/
void board_led_initialize(void)
{
/* Configure all LED GPIO lines */
led_dumpgpio("board_led_initialize() Entry)");
lpc17_configgpio(NUCLEUS2G_LED1_A);
lpc17_configgpio(NUCLEUS2G_LED1_B);
lpc17_configgpio(NUCLEUS2G_LED2_A);
lpc17_configgpio(NUCLEUS2G_LED2_B);
lpc17_configgpio(NUCLEUS2G_HEARTBEAT);
lpc17_configgpio(NUCLEUS2G_EXTRA_LED);
led_dumpgpio("board_led_initialize() Exit");
}
/****************************************************************************
* Name: board_led_on
****************************************************************************/
void board_led_on(int led)
{
/* We will control LED1 and LED2 not yet completed the boot sequence. */
if (!g_initialized)
{
enum lpc17_ledstate_e led1 = LPC17_LEDSTATE_OFF;
enum lpc17_ledstate_e led2 = LPC17_LEDSTATE_OFF;
switch (led)
{
case LED_STACKCREATED:
g_initialized = true;
case LED_STARTED:
default:
break;
case LED_HEAPALLOCATE:
led1 = LPC17_LEDSTATE_GREEN;
break;
case LED_IRQSENABLED:
led2 = LPC17_LEDSTATE_GREEN;
}
lpc17_led1(led1);
lpc17_led2(led2);
}
/* We will always control the HB LED */
switch (led)
{
default:
break;
case LED_INIRQ:
case LED_SIGNAL:
case LED_ASSERTION:
case LED_PANIC:
lpc17_gpiowrite(NUCLEUS2G_HEARTBEAT, false);
g_nestcount++;
}
}
/****************************************************************************
* Name: board_led_off
****************************************************************************/
void board_led_off(int led)
{
/* In all states, OFF can only mean turning off the HB LED */
if (g_nestcount <= 1)
{
lpc17_gpiowrite(NUCLEUS2G_HEARTBEAT, true);
g_nestcount = 0;
}
else
{
g_nestcount--;
}
}
/************************************************************************************
* Name: lpc17_led1 and 2
*
* Description:
* Once the system has booted, these functions can be used to control LEDs 1 and 2
*
************************************************************************************/
void lpc17_led1(enum lpc17_ledstate_e state)
{
bool red = (((unsigned int)state & LPC17_LEDSTATE_RED) != 0);
bool green = (((unsigned int)state & LPC17_LEDSTATE_GREEN) != 0);
lpc17_gpiowrite(NUCLEUS2G_LED1_A, red);
lpc17_gpiowrite(NUCLEUS2G_LED1_B, green);
}
void lpc17_led2(enum lpc17_ledstate_e state)
{
bool red = (((unsigned int)state & LPC17_LEDSTATE_RED) != 0);
bool green = (((unsigned int)state & LPC17_LEDSTATE_GREEN) != 0);
lpc17_gpiowrite(NUCLEUS2G_LED2_A, red);
lpc17_gpiowrite(NUCLEUS2G_LED2_B, green);
}
#endif /* CONFIG_ARCH_LEDS */
