134 lines
5.1 KiB
C
134 lines
5.1 KiB
C
/****************************************************************************
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* boards/arm/lpc54xx/lpcxpresso-lpc54628/src/lpc54_autoleds.c
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*
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* Copyright (C) 2017 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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/* The LPCXpress-LPC54628 has three user LEDs: D9, D11, and D12. These
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* LEDs are for application use. They are illuminated when the driving
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* signal from the LPC546xx is low. The LEDs are driven by ports P2-2 (D9),
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* P3-3 (D11) and P3-14 (D12).
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*
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* These LEDs are not used by the NuttX port unless CONFIG_ARCH_LEDS is
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* defined. In that case, the usage by the board port is defined in
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* include/board.h and src/lpc54_autoleds.c. The LEDs are used to encode
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* OS-related events as follows:
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* D9 D11 D12
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* LED_STARTED 0 OFF OFF OFF
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* LED_HEAPALLOCATE 1 ON OFF OFF
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* LED_IRQSENABLED 2 OFF ON OFF
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* LED_STACKCREATED 3 OFF OFF OFF
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*
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* LED_INIRQ 4 NC NC ON (momentary)
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* LED_SIGNAL 4 NC NC ON (momentary)
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* LED_ASSERTION 4 NC NC ON (momentary)
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* LED_PANIC 4 NC NC ON (2Hz flashing)
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* LED_IDLE Sleep mode indication not supported
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*
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* After booting, LEDs D9 and D11 are available for use by the user. If the
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* system booted properly, D9 and D11 should be OFF and D12 should be glowing
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* to indicate that interrupts are occurring. If D12 is flash at 2Hz, then
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* the system has crashed.
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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 <nuttx/board.h>
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#include <arch/board/board.h>
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#include "lpc54_gpio.h"
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#include "lpcxpresso-lpc54628.h"
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#ifdef CONFIG_ARCH_LEDS
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: board_autoled_initialize
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****************************************************************************/
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void board_autoled_initialize(void)
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{
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/* Configure LED GPIOs for output */
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lpc54_gpio_config(GPIO_LED_D9);
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lpc54_gpio_config(GPIO_LED_D11);
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lpc54_gpio_config(GPIO_LED_D12);
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}
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/****************************************************************************
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* Name: board_autoled_on
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****************************************************************************/
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void board_autoled_on(int led)
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{
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/* D9 and D11 are only changed during boot up states */
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if ((unsigned int)led <= 3)
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{
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bool d9off = (led != 1);
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bool d11off = (led != 2);
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lpc54_gpio_write(GPIO_LED_D9, d9off); /* Low illuminates */
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lpc54_gpio_write(GPIO_LED_D11, d11off); /* Low illuminates */
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lpc54_gpio_write(GPIO_LED_D12, true); /* Low illuminates */
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}
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else
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{
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lpc54_gpio_write(GPIO_LED_D12, false); /* Low illuminates */
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}
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}
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/****************************************************************************
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* Name: board_autoled_off
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****************************************************************************/
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void board_autoled_off(int led)
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{
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if (led == 4)
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{
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lpc54_gpio_write(GPIO_LED_D12, true); /* Low illuminates */
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}
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}
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#endif /* CONFIG_ARCH_LEDS */
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