153 lines
3.5 KiB
C
153 lines
3.5 KiB
C
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/*
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* File :_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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* 2017-09-14 Haley the first version
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*/
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#include <rtthread.h>
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#include <rtdevice.h>
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#include "am_mcu_apollo.h"
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#include "board.h"
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#define AM_GPIO_LED0 46
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#define AM_GPIO_LED1 47
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#define AM_GPIO_LED2 48
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#define AM_GPIO_LED3 49
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/**
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* @brief Turns on the requested LED.
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*
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* @param LEDNum is the LED number for the light to turn on.
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*
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* This function turns on a single LED.
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*
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* @return None.
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*/
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void rt_hw_led_on(rt_uint8_t LEDNum)
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{
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if(LEDNum == 0)
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rt_pin_write(AM_GPIO_LED0, PIN_LOW);
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else if(LEDNum == 1)
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rt_pin_write(AM_GPIO_LED1, PIN_LOW);
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else if(LEDNum == 2)
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rt_pin_write(AM_GPIO_LED2, PIN_LOW);
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else if(LEDNum == 3)
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rt_pin_write(AM_GPIO_LED3, PIN_LOW);
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}
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/**
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* @brief Turns off the requested LED.
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*
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* @param LEDNum is the LED number for the light to turn off.
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*
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* This function turns off a single LED.
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*
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* @return None.
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*/
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void rt_hw_led_off(rt_uint8_t LEDNum)
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{
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if(LEDNum == 0)
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rt_pin_write(AM_GPIO_LED0, PIN_HIGH);
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else if(LEDNum == 1)
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rt_pin_write(AM_GPIO_LED1, PIN_HIGH);
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else if(LEDNum == 2)
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rt_pin_write(AM_GPIO_LED2, PIN_HIGH);
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else if(LEDNum == 3)
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rt_pin_write(AM_GPIO_LED3, PIN_HIGH);
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}
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/**
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* @brief Configures the necessary pins for an array of LEDs
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*
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* @param None.
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*
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* This function configures a GPIO to drive an LED in a low-power way.
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*
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* @return None.
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*/
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int rt_hw_led_init(void)
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{
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#if defined(RT_USING_LED0)
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/* config led */
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rt_pin_mode(AM_GPIO_LED0, PIN_MODE_OUTPUT);
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/* turns off the led */
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rt_hw_led_off(0);
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#endif /* RT_USING_LED0 */
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#if defined(RT_USING_LED1)
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/* config led */
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rt_pin_mode(AM_GPIO_LED1, PIN_MODE_OUTPUT);
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/* turns off the led */
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rt_hw_led_off(1);
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#endif /* RT_USING_LED1 */
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#if defined(RT_USING_LED2)
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/* config led */
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rt_pin_mode(AM_GPIO_LED2, PIN_MODE_OUTPUT);
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/* turns off the led */
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rt_hw_led_off(2);
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#endif /* RT_USING_LED0 */
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#if defined(RT_USING_LED3)
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/* config led */
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rt_pin_mode(AM_GPIO_LED3, PIN_MODE_OUTPUT);
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/* turns off the led */
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rt_hw_led_off(3);
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#endif /* RT_USING_LED1 */
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return 0;
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}
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#ifdef RT_USING_PIN
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INIT_BOARD_EXPORT(rt_hw_led_init);
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#endif
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#ifdef RT_USING_FINSH
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#include <finsh.h>
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void led(rt_uint32_t led, rt_uint32_t state)
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{
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/* set led status */
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switch (state)
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{
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case 0:
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rt_hw_led_off(led);
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break;
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case 1:
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rt_hw_led_on(led);
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break;
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default:
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break;
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}
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}
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FINSH_FUNCTION_EXPORT(led, turn led (0 - 3) on (1) or off (0).)
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#endif
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/*@}*/
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