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