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nuttx/configs/pic32mx7mmb/src/pic32_leds.c

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/****************************************************************************
* configs/pic32mx7mmb/src/pic32_leds.c
*
* Copyright (C) 2012, 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 <stdint.h>
#include <stdbool.h>
#include <debug.h>
#include <nuttx/board.h>
#include <arch/board/board.h>
#include "pic32mx.h"
#include "pic32mx7mmb.h"
/****************************************************************************
* Pre-processor Definitions
****************************************************************************/
/* LED Configuration ********************************************************/
/* The Mikroelektronika PIC32MX7 MMB has 3 user LEDs labelled LED0-2 in the
* schematics:
*
* --- ----- --------------------------------------------------------------
* PIN Board Notes
* --- ----- --------------------------------------------------------------
* RA0 LED0 Pulled-up, low value illuminates
* RA1 LED1 Pulled-up, low value illuminates
* RD9 LED2 Pulled-up, low value illuminates
* RA9 LED4 Not available for general use*, indicates MMC/SD activity
* --- LED5 Not controllable by software, indicates power-on
*
* * RA9 is also the SD chip select. It will illuminate whenever the SD card
* is selected. If SD is not used, then LED4 could also be used as a user-
* controlled LED.
*
* If CONFIG_ARCH_LEDS is defined, then NuttX will control these LEDs as
* follows:
* ON OFF
* ------------------------- ---- ---- ---- ---- ---- ----
* LED0 LED1 LED2 LED0 LED1 LED2
* ------------------------- ---- ---- ---- ---- ---- ----
* LED_STARTED 0 OFF OFF OFF --- --- ---
* LED_HEAPALLOCATE 1 ON OFF N/C --- --- ---
* LED_IRQSENABLED 2 OFF ON N/C --- --- ---
* LED_STACKCREATED 3 ON ON N/C --- --- ---
* LED_INIRQ 4 N/C N/C ON N/C N/C OFF
* LED_SIGNAL 4 N/C N/C ON N/C N/C OFF
* LED_ASSERTION 4 N/C N/C ON N/C N/C OFF
* LED_PANIC 5 ON N/C N/C OFF N/C N/C
*/
#define GPIO_LED_0 (GPIO_OUTPUT|GPIO_VALUE_ONE|GPIO_PORTA|GPIO_PIN0)
#define GPIO_LED_1 (GPIO_OUTPUT|GPIO_VALUE_ONE|GPIO_PORTA|GPIO_PIN1)
#define GPIO_LED_2 (GPIO_OUTPUT|GPIO_VALUE_ONE|GPIO_PORTD|GPIO_PIN9)
#define GPIO_LED_4 (GPIO_OUTPUT|GPIO_VALUE_ONE|GPIO_PORTA|GPIO_PIN9)
/* LED Management Definitions ***********************************************/
#ifdef CONFIG_ARCH_LEDS
# define LED_OFF 0
# define LED_ON 1
# define LED_NC 2
#endif
/****************************************************************************
* Private types
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
struct led_setting_s
{
uint8_t led0 : 2;
uint8_t led1 : 2;
uint8_t led2 : 2;
uint8_t unused : 2;
};
#endif
/****************************************************************************
* Private Data
****************************************************************************/
/* If CONFIG_ARCH_LEDS is defined then NuttX will control the LEDs. The
* following structures identified the LED settings for each NuttX LED state.
*/
#ifdef CONFIG_ARCH_LEDS
static const struct led_setting_s g_ledonvalues[LED_NVALUES] =
{
{LED_OFF, LED_OFF, LED_OFF, LED_OFF},
{LED_ON, LED_OFF, LED_NC, LED_OFF},
{LED_OFF, LED_ON, LED_NC, LED_OFF},
{LED_ON, LED_ON, LED_NC, LED_OFF},
{LED_NC, LED_NC, LED_ON, LED_OFF},
{LED_ON, LED_NC, LED_NC, LED_OFF},
};
static const struct led_setting_s g_ledoffvalues[LED_NVALUES] =
{
{LED_NC, LED_NC, LED_NC, LED_OFF},
{LED_NC, LED_NC, LED_NC, LED_OFF},
{LED_NC, LED_NC, LED_NC, LED_OFF},
{LED_NC, LED_NC, LED_NC, LED_OFF},
{LED_NC, LED_NC, LED_OFF, LED_OFF},
{LED_OFF, LED_NC, LED_NC, LED_OFF},
};
/* If CONFIG_ARCH_LEDS is not defined, then the user can control the LEDs in
* any way. The following array simply maps the PIC32MX_PIC32MX7MMB_LEDn
* index values to the correct LED pin configuration.
*/
#else
static const uint16_t g_ledpincfg[PIC32MX_PIC32MX7MMB_NLEDS] =
{
GPIO_LED_0, GPIO_LED_1, GPIO_LED_2
};
#endif
/****************************************************************************
* Private Functions
****************************************************************************/
/****************************************************************************
* Name: pic32mx_setleds
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
static void pic32mx_setleds(FAR const struct led_setting_s *setting)
{
/* LEDs are pulled up so writing a low value (false) illuminates them */
if (setting->led0 != LED_NC)
{
pic32mx_gpiowrite(GPIO_LED_0, setting->led0 != LED_ON);
}
if (setting->led1 != LED_NC)
{
pic32mx_gpiowrite(GPIO_LED_1, setting->led1 != LED_ON);
}
if (setting->led2 != LED_NC)
{
pic32mx_gpiowrite(GPIO_LED_2, setting->led2 != LED_ON);
}
}
#endif
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: board_userled_initialize
****************************************************************************/
#ifndef CONFIG_ARCH_LEDS
void board_userled_initialize(void)
{
/* Configure output pins */
pic32mx_configgpio(GPIO_LED_0);
pic32mx_configgpio(GPIO_LED_1);
pic32mx_configgpio(GPIO_LED_2);
}
#endif
/****************************************************************************
* Name: board_userled
****************************************************************************/
#ifndef CONFIG_ARCH_LEDS
void board_userled(int led, bool ledon)
{
/* LEDs are pulled up so writing a low value (false) illuminates them */
if ((unsigned)led < PIC32MX_PIC32MX7MMB_NLEDS)
{
pic32mx_gpiowrite(g_ledpincfg[led], !ledon);
}
}
#endif
/****************************************************************************
* Name: board_userled_all
****************************************************************************/
#ifndef CONFIG_ARCH_LEDS
void board_userled_all(uint8_t ledset)
{
/* Call board_userled() with ledon == true to illuminated the LED */
board_userled(PIC32MX_PIC32MX7MMB_LED0, (ledset & PIC32MX_PIC32MX7MMB_LED0_BIT) != 0);
board_userled(PIC32MX_PIC32MX7MMB_LED1, (ledset & PIC32MX_PIC32MX7MMB_LED1_BIT) != 0);
board_userled(PIC32MX_PIC32MX7MMB_LED2, (ledset & PIC32MX_PIC32MX7MMB_LED2_BIT) != 0);
}
#endif
/****************************************************************************
* Name: pic32mx_led_initialize
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
void pic32mx_led_initialize(void)
{
/* Configure output pins */
pic32mx_configgpio(GPIO_LED_0);
pic32mx_configgpio(GPIO_LED_1);
pic32mx_configgpio(GPIO_LED_2);
}
#endif
/****************************************************************************
* Name: board_autoled_on
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
void board_autoled_on(int led)
{
if ((unsigned)led < LED_NVALUES)
{
pic32mx_setleds(&g_ledonvalues[led]);
}
}
#endif
/****************************************************************************
* Name: board_autoled_off
****************************************************************************/
#ifdef CONFIG_ARCH_LEDS
void board_autoled_off(int led)
{
if ((unsigned)led < LED_NVALUES)
{
pic32mx_setleds(&g_ledoffvalues[led]);
}
}
#endif
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