126 lines
2.3 KiB
C
126 lines
2.3 KiB
C
/*
|
|
* 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);
|
|
}
|