228 lines
7.4 KiB
C
228 lines
7.4 KiB
C
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/****************************************************************************
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* configs/lm4f120-launchpad/src/lm4f_leds.c
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* arch/arm/src/board/lm4f_leds.c
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*
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* Copyright (C) 2013 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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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.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 "lm_gpio.h"
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#include "lmf4120-launchpad.h"
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/****************************************************************************
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* Definitions
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****************************************************************************/
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/* The LM32F120 has a single RGB LED. There is only one visible LED which will vary
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* in color. But, from the standpoint of the firmware, this appears as three LEDs:
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*
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* BOARD_LED_R -- Connected to PF1
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* BOARD_LED_G -- Connected to PF3
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* BOARD_LED_B -- Connected to PF2
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*
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* If CONFIG_ARCH_LEDS is defined, then automated support for the LaunchPad LEDs
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* will be included in the build:
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*
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* OFF:
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* - OFF means that the OS is still initializing. Initialization is very fast so
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* if you see this at all, it probably means that the system is hanging up
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* somewhere in the initialization phases.
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*
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* GREEN or GREEN-ish
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* - This means that the OS completed initialization.
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*
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* Bluish:
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* - Whenever and interrupt or signal handler is entered, the BLUE LED is
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* illuminated and extinguished when the interrupt or signal handler exits.
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* This will add a BLUE-ish tinge to the LED.
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*
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* Redish:
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* - If a recovered assertion occurs, the RED component will be illuminated
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* briefly while the assertion is handled. You will probably never see this.
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*
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* Flashing RED:
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* - In the event of a fatal crash, the BLUE and GREEN components will be
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* extinguished and the RED component will FLASH at a 2Hz rate.
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*
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* RED GREEN BLUE
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* LED_STARTED 0 OFF OFF OFF
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* LED_HEAPALLOCATE 0 OFF OFF OFF
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* LED_IRQSENABLED 0 OFF OFF OFF
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* LED_STACKCREATED 1 OFF ON OFF
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* LED_INIRQ 2 NC NC ON (momentary)
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* LED_SIGNAL 2 NC NC ON (momentary)
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* LED_ASSERTION 3 ON NC NC (momentary)
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* LED_PANIC 3 ON OFF OFF (flashing 2Hz)
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*/
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/* CONFIG_DEBUG_LEDS enables debug output from this file (needs CONFIG_DEBUG
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* with CONFIG_DEBUG_VERBOSE too)
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*/
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#ifdef CONFIG_DEBUG_LEDS
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# define leddbg lldbg
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# define ledvdbg llvdbg
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#else
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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 CONFIG_DEBUG_LEDS
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# define led_dumpgpio(m) lm_dumpgpio(LED_GPIO, 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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/****************************************************************************
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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: lm4f_ledinit
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****************************************************************************/
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#ifdef CONFIG_ARCH_LEDS
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void lm4f_ledinit(void)
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{
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leddbg("Initializing\n");
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/* Configure Port E, Bit 1 as an output, initial value=OFF */
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led_dumpgpio("lm4f_ledinit before lm_configgpio()");
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lm_configgpio(GPIO_LED_R);
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lm_configgpio(GPIO_LED_G);
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lm_configgpio(GPIO_LED_B);
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led_dumpgpio("lm4f_ledinit after lm_configgpio()");
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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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switch (led)
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{
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/* All components stay off until the file initialization step */
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default:
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case LED_STARTED:
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case LED_HEAPALLOCATE:
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case LED_IRQSENABLED:
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default:
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break;
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/* The GREEN component is illuminated at the final initialization step */
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case LED_STACKCREATED:
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lm_gpiowrite(GPIO_LED_GREEN, false);
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break;
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/* These will illuminate the BLUE component with on effect no RED and GREEN */
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case LED_INIRQ:
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case LED_SIGNAL:
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lm_gpiowrite(GPIO_LED_BLUE, false);
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break;
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/* This will turn off RED and GREEN and turn RED on */
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case LED_PANIC:
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lm_gpiowrite(GPIO_LED_GREEN, true);
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lm_gpiowrite(GPIO_LED_BLUE, true);
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/* This will illuminate the RED component with no effect on RED and GREEN */
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case LED_ASSERTION:
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lm_gpiowrite(GPIO_LED_RED, false);
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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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switch (led)
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{
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/* These should not happen and are ignored */
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default:
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case LED_STARTED:
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case LED_HEAPALLOCATE:
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case LED_IRQSENABLED:
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case LED_STACKCREATED:
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default:
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break;
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/* These will extinguish the BLUE component with no effect on RED and GREEN */
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case LED_INIRQ:
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case LED_SIGNAL:
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lm_gpiowrite(GPIO_LED_BLUE, true);
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break;
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/* These will extinguish the RED component with on effect on RED and GREEN */
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case LED_INIRQ:
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case LED_SIGNAL:
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lm_gpiowrite(GPIO_LED_RED, true);
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break;
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}
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}
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#endif /* CONFIG_ARCH_LEDS */
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