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/*
* File : drv_led.c
* This file is part of RT-Thread RTOS
* COPYRIGHT (C) 2006 - 2017, RT-Thread Development Team
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Change Logs:
* Date Author Notes
*/
#include "board.h"
#include "drv_led.h"
#include <drivers/pin.h>
//the pin number can be find in :goip.c pins[].
//in nucleo-l476rg board,the green led is attached to PA5 which the number is 21.
#define LED 21
/**
* This function light up LED
*
* @param led LED number (6)
*/
void led_set(int led)
{
if (led == 0)
{
rt_pin_write(LED, 1);
}
}
/**
* This function return LED status, on or off
*
* @param led LED number (0-1)
*/
int led_get(int led)
{
int ret = 0;
if (led == 0)
{
ret = rt_pin_read(LED);
}
return ret;
}
/**
* This function turn off LED
*
* @param led LED number (0-1)
*/
void led_clear(int led)
{
if (led == 0)
{
rt_pin_write(LED, 0);
}
}
/**
* This function toggle LED, switch from on to off or vice versa
*
* @param led LED number (0-1)
*/
void led_toggle(int led)
{
int ret = 0;
ret = rt_pin_read(LED);
if(ret==1)
{
ret=0;
}
else if(ret==0)
{
ret=1;
}
if (led == 0)
{
rt_pin_write(LED, ret);
}
}
/**
* This function light up LEDs according value of 2 least significat bits
*
* @param value Bit pattern
*/
void led_value(int value)
{
rt_pin_write(LED, value);
}
/**
* This function initialize LED interface
*/
void led_init(void)
{
rt_pin_mode(LED, PIN_MODE_OUTPUT);
}
/**
* This function initialize LED interface
*/
void led_deinit(void)
{
rt_pin_mode(LED, PIN_MODE_INPUT);
}
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