205 lines
6.6 KiB
C
205 lines
6.6 KiB
C
/****************************************************************************
|
|
* configs/tm4c123g-launchpad/src/tm4c_leds.c
|
|
*
|
|
* Copyright (C) 2014-2015 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 <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 "tiva_gpio.h"
|
|
#include "tm4c123g-launchpad.h"
|
|
|
|
/****************************************************************************
|
|
* Pre-processor Definitions
|
|
****************************************************************************/
|
|
/* The TM4C123G LaunchPad has a single RGB LED. There is only one visible LED
|
|
* which will vary in color. But, from the standpoint of the firmware, this
|
|
* appears as three LEDs:
|
|
*
|
|
* BOARD_LED_R -- Connected to PF1
|
|
* BOARD_LED_G -- Connected to PF3
|
|
* BOARD_LED_B -- Connected to PF2
|
|
*
|
|
* If CONFIG_ARCH_LEDS is defined, then automated support for the LaunchPad LEDs
|
|
* will be included in the build:
|
|
*
|
|
* OFF:
|
|
* - OFF means that the OS is still initializing. Initialization is very fast so
|
|
* if you see this at all, it probably means that the system is hanging up
|
|
* somewhere in the initialization phases.
|
|
*
|
|
* GREEN or GREEN-ish
|
|
* - This means that the OS completed initialization.
|
|
*
|
|
* Bluish:
|
|
* - Whenever and interrupt or signal handler is entered, the BLUE LED is
|
|
* illuminated and extinguished when the interrupt or signal handler exits.
|
|
* This will add a BLUE-ish tinge to the LED.
|
|
*
|
|
* Redish:
|
|
* - If a recovered assertion occurs, the RED component will be illuminated
|
|
* briefly while the assertion is handled. You will probably never see this.
|
|
*
|
|
* Flashing RED:
|
|
* - In the event of a fatal crash, the BLUE and GREEN components will be
|
|
* extinguished and the RED component will FLASH at a 2Hz rate.
|
|
*
|
|
* RED GREEN BLUE
|
|
* LED_STARTED 0 OFF OFF OFF
|
|
* LED_HEAPALLOCATE 0 OFF OFF OFF
|
|
* LED_IRQSENABLED 0 OFF OFF OFF
|
|
* LED_STACKCREATED 1 OFF ON OFF
|
|
* LED_INIRQ 2 NC NC ON (momentary)
|
|
* LED_SIGNAL 2 NC NC ON (momentary)
|
|
* LED_ASSERTION 3 ON NC NC (momentary)
|
|
* LED_PANIC 4 ON OFF OFF (flashing 2Hz)
|
|
*/
|
|
|
|
/* Dump GPIO registers */
|
|
|
|
#ifdef CONFIG_DEBUG_LEDS_INFO
|
|
# define led_dumpgpio(m) tiva_dumpgpio(LED_GPIO, m)
|
|
#else
|
|
# define led_dumpgpio(m)
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: tm4c_led_initialize
|
|
*
|
|
* Description:
|
|
* Called to initialize the on-board LEDs.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_ARCH_LEDS
|
|
void tm4c_led_initialize(void)
|
|
{
|
|
ledinfo("Initializing\n");
|
|
|
|
/* Configure Port E, Bit 1 as an output, initial value=OFF */
|
|
|
|
led_dumpgpio("tm4c_led_initialize before tiva_configgpio()");
|
|
tiva_configgpio(GPIO_LED_R);
|
|
tiva_configgpio(GPIO_LED_G);
|
|
tiva_configgpio(GPIO_LED_B);
|
|
led_dumpgpio("tm4c_led_initialize after tiva_configgpio()");
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: board_autoled_on
|
|
****************************************************************************/
|
|
|
|
void board_autoled_on(int led)
|
|
{
|
|
switch (led)
|
|
{
|
|
/* All components stay off until the file initialization step */
|
|
|
|
default:
|
|
case 0:
|
|
break;
|
|
|
|
/* The GREEN component is illuminated at the final initialization step */
|
|
|
|
case 1:
|
|
tiva_gpiowrite(GPIO_LED_G, false);
|
|
break;
|
|
|
|
/* These will illuminate the BLUE component with on effect no RED and GREEN */
|
|
|
|
case 2:
|
|
tiva_gpiowrite(GPIO_LED_B, false);
|
|
break;
|
|
|
|
/* This will turn off RED and GREEN and turn RED on */
|
|
|
|
case 4:
|
|
tiva_gpiowrite(GPIO_LED_G, true);
|
|
tiva_gpiowrite(GPIO_LED_B, true);
|
|
|
|
/* This will illuminate the RED component with no effect on RED and GREEN */
|
|
|
|
case 3:
|
|
tiva_gpiowrite(GPIO_LED_R, false);
|
|
break;
|
|
}
|
|
}
|
|
|
|
/****************************************************************************
|
|
* Name: board_autoled_off
|
|
****************************************************************************/
|
|
|
|
void board_autoled_off(int led)
|
|
{
|
|
switch (led)
|
|
{
|
|
/* These should not happen and are ignored */
|
|
|
|
default:
|
|
case 0:
|
|
case 1:
|
|
break;
|
|
|
|
/* These will extinguish the BLUE component with no effect on RED and GREEN */
|
|
|
|
case 2:
|
|
tiva_gpiowrite(GPIO_LED_B, true);
|
|
break;
|
|
|
|
/* These will extinguish the RED component with on effect on RED and GREEN */
|
|
|
|
case 3:
|
|
case 4:
|
|
tiva_gpiowrite(GPIO_LED_R, true);
|
|
break;
|
|
}
|
|
}
|
|
|
|
#endif /* CONFIG_ARCH_LEDS */
|