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