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/****************************************************************************
*
* Copyright (c) 2012-2015 PX4 Development Team. All rights reserved.
*
* 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 PX4 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.
*
****************************************************************************/
/**
* @file px4cannode_led.c
*
* PX4ESC LED backend.
*/
#include <nuttx/config.h>
#include <stdbool.h>
#include <nuttx/board.h>
#include "stm32.h"
#include "board_config.h"
#include <arch/board/board.h>
#include <systemlib/px4_macros.h>
/*
* Ideally we'd be able to get these from up_internal.h,
* but since we want to be able to disable the NuttX use
* of leds for system indication at will and there is no
* separate switch, we need to build independent of the
* CONFIG_ARCH_LEDS configuration switch.
*/
__BEGIN_DECLS
extern void led_init(void);
extern void led_on(int led);
extern void led_off(int led);
extern void led_toggle(int led);
__END_DECLS
static uint16_t g_ledmap[] = {
GPIO_LED_GREEN, // Indexed by LED_GREEN
GPIO_LED_YELLOW, // Indexed by LED_YELLOW
};
__EXPORT void led_init(void)
{
/* Configure LED1-2 GPIOs for output */
for (size_t l = 0; l < arraySize(g_ledmap); l++) {
stm32_configgpio(g_ledmap[l]);
}
}
__EXPORT void board_led_initialize(void)
{
led_init();
}
static void phy_set_led(int led, bool state)
{
/* Pull Up to switch on */
stm32_gpiowrite(g_ledmap[led], state);
}
static bool phy_get_led(int led)
{
return !stm32_gpioread(g_ledmap[led]);
}
__EXPORT void led_on(int led)
{
phy_set_led(led, true);
}
__EXPORT void led_off(int led)
{
phy_set_led(led, false);
}
__EXPORT void led_toggle(int led)
{
phy_set_led(led, !phy_get_led(led));
}
static bool g_initialized;
// Nuttx Usages
__EXPORT void board_led_on(int led)
{
switch (led)
{
default:
case LED_STARTED:
case LED_HEAPALLOCATE:
case LED_IRQSENABLED:
phy_set_led(LED_GREEN, false);
phy_set_led(LED_YELLOW, false);
break;
case LED_STACKCREATED:
phy_set_led(LED_GREEN, true);
phy_set_led(LED_YELLOW, false);
g_initialized = true;
break;
case LED_INIRQ:
case LED_SIGNAL:
case LED_ASSERTION:
case LED_PANIC:
phy_set_led(LED_YELLOW, true);
break;
case LED_IDLE : /* IDLE */
phy_set_led(LED_GREEN, false);
break;
}
}
/****************************************************************************
* Name: board_led_off
****************************************************************************/
__EXPORT void board_led_off(int led)
{
switch (led)
{
default:
case LED_STARTED:
case LED_HEAPALLOCATE:
case LED_IRQSENABLED:
case LED_STACKCREATED:
phy_set_led(LED_GREEN, false);
// no break
case LED_INIRQ:
case LED_SIGNAL:
case LED_ASSERTION:
case LED_PANIC:
phy_set_led(LED_YELLOW, false);
break;
case LED_IDLE: /* IDLE */
phy_set_led(LED_GREEN, g_initialized);
break;
}
}
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