223 lines
6.3 KiB
C
223 lines
6.3 KiB
C
|
/****************************************************************************
|
||
|
* configs/mbed/src/up_leds.c
|
||
|
* arch/arm/src/board/up_leds.c
|
||
|
*
|
||
|
* Copyright (C) 2010 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 <stdbool.h>
|
||
|
#include <debug.h>
|
||
|
|
||
|
#include <arch/board/board.h>
|
||
|
|
||
|
#include "chip.h"
|
||
|
#include "up_arch.h"
|
||
|
#include "up_internal.h"
|
||
|
|
||
|
#include "lpc17_internal.h"
|
||
|
|
||
|
#include "mbed_internal.h"
|
||
|
|
||
|
#ifdef CONFIG_ARCH_LEDS
|
||
|
|
||
|
/****************************************************************************
|
||
|
* Definitions
|
||
|
****************************************************************************/
|
||
|
|
||
|
/* Enables debug output from this file (needs CONFIG_DEBUG with
|
||
|
* CONFIG_DEBUG_VERBOSE too)
|
||
|
*/
|
||
|
|
||
|
#undef LED_DEBUG /* Define to enable debug */
|
||
|
#undef LED_VERBOSE /* Define to enable verbose debug */
|
||
|
|
||
|
#ifdef LED_DEBUG
|
||
|
# define leddbg lldbg
|
||
|
# ifdef LED_VERBOSE
|
||
|
# define ledvdbg lldbg
|
||
|
# else
|
||
|
# define ledvdbg(x...)
|
||
|
# endif
|
||
|
#else
|
||
|
# undef LED_VERBOSE
|
||
|
# define leddbg(x...)
|
||
|
# define ledvdbg(x...)
|
||
|
#endif
|
||
|
|
||
|
/* Dump GPIO registers */
|
||
|
|
||
|
#ifdef LED_VERBOSE
|
||
|
# define led_dumpgpio(m) lpc17_dumpgpio(MBED_LED3, m)
|
||
|
#else
|
||
|
# define led_dumpgpio(m)
|
||
|
#endif
|
||
|
|
||
|
/****************************************************************************
|
||
|
* Private Data
|
||
|
****************************************************************************/
|
||
|
|
||
|
/* LED definitions ******************************************************************
|
||
|
|
||
|
The MBED has 4 LEDs along the bottom of the board. Blue or off.
|
||
|
If CONFIG_ARCH_LEDS is defined, the LEDs will be controlled as follows for NuttX
|
||
|
debug functionality (where NC means "No Change").
|
||
|
|
||
|
During the boot phases. LED1 and LED2 will show boot status. LED3/4 Not used.
|
||
|
|
||
|
LED1 LED2
|
||
|
STARTED OFF OFF
|
||
|
HEAPALLOCATE BLUE OFF
|
||
|
IRQSENABLED OFF BLUE
|
||
|
STACKCREATED OFF OFF
|
||
|
|
||
|
After the system is booted, this logic will no longer use LEDs 1 & 2. They
|
||
|
are available together with LED3 for use the application software using
|
||
|
lpc17_led (prototyped below)
|
||
|
*/
|
||
|
|
||
|
static bool g_initialized;
|
||
|
static int g_nestcount;
|
||
|
|
||
|
/****************************************************************************
|
||
|
* Private Functions
|
||
|
****************************************************************************/
|
||
|
|
||
|
/****************************************************************************
|
||
|
* Public Functions
|
||
|
****************************************************************************/
|
||
|
|
||
|
/****************************************************************************
|
||
|
* Name: up_ledinit
|
||
|
****************************************************************************/
|
||
|
|
||
|
void up_ledinit(void)
|
||
|
{
|
||
|
/* Configure all LED GPIO lines */
|
||
|
|
||
|
led_dumpgpio("up_ledinit() Entry)");
|
||
|
|
||
|
lpc17_configgpio(MBED_LED1);
|
||
|
lpc17_configgpio(MBED_LED2);
|
||
|
lpc17_configgpio(MBED_LED3);
|
||
|
lpc17_configgpio(MBED_LED4);
|
||
|
|
||
|
led_dumpgpio("up_ledinit() Exit");
|
||
|
}
|
||
|
|
||
|
/****************************************************************************
|
||
|
* Name: up_ledon
|
||
|
****************************************************************************/
|
||
|
|
||
|
void up_ledon(int led)
|
||
|
{
|
||
|
/* We will control LED1 and LED2 not yet completed the boot sequence. */
|
||
|
|
||
|
if (!g_initialized)
|
||
|
{
|
||
|
int led1 = 0;
|
||
|
int led2 = 0;
|
||
|
switch (led)
|
||
|
{
|
||
|
case LED_STACKCREATED:
|
||
|
g_initialized = true;
|
||
|
case LED_STARTED:
|
||
|
default:
|
||
|
break;
|
||
|
|
||
|
case LED_HEAPALLOCATE:
|
||
|
led1 = 1;
|
||
|
break;
|
||
|
|
||
|
case LED_IRQSENABLED:
|
||
|
led2 = 1;
|
||
|
}
|
||
|
lpc17_led(MBED_LED1,led1);
|
||
|
lpc17_led(MBED_LED2,led2);
|
||
|
}
|
||
|
|
||
|
/* We will always control the HB LED */
|
||
|
|
||
|
switch (led)
|
||
|
{
|
||
|
case LED_INIRQ:
|
||
|
case LED_SIGNAL:
|
||
|
case LED_ASSERTION:
|
||
|
case LED_PANIC:
|
||
|
lpc17_gpiowrite(MBED_HEARTBEAT, false);
|
||
|
g_nestcount++;
|
||
|
|
||
|
default:
|
||
|
break;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/****************************************************************************
|
||
|
* Name: up_ledoff
|
||
|
****************************************************************************/
|
||
|
|
||
|
void up_ledoff(int led)
|
||
|
{
|
||
|
/* In all states, OFF can only mean turning off the HB LED */
|
||
|
|
||
|
if (g_nestcount <= 1)
|
||
|
{
|
||
|
lpc17_led(MBED_HEARTBEAT, true);
|
||
|
g_nestcount = 0;
|
||
|
}
|
||
|
else
|
||
|
{
|
||
|
g_nestcount--;
|
||
|
}
|
||
|
}
|
||
|
|
||
|
/************************************************************************************
|
||
|
* Name: lpc17_led
|
||
|
*
|
||
|
* Description:
|
||
|
* Once the system has booted, these functions can be used to control the LEDs
|
||
|
*
|
||
|
************************************************************************************/
|
||
|
|
||
|
void lpc17_led(int lednum, int state)
|
||
|
|
||
|
{
|
||
|
lpc17_gpiowrite(lednum, state);
|
||
|
}
|
||
|
#endif /* CONFIG_ARCH_LEDS */
|