rt-thread/bsp/efm32/dev_led.c

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/******************************************************************//**
* @file dev_led.c
* @brief LED driver of RT-Thread RTOS for EFM32
* COPYRIGHT (C) 2009, RT-Thread Development Team
* @author Bernard, onelife
* @version 0.4 beta
**********************************************************************
* @section License
* The license and distribution terms for this file may be found in the file LICENSE in this
* distribution or at http://www.rt-thread.org/license/LICENSE
**********************************************************************
* @section Change Logs
* Date Author Notes
* 2009-01-05 Bernard the first version
* 2010-12-27 onelife modify for EFM32
*********************************************************************/
/******************************************************************//**
* @addtogroup efm32
* @{
*********************************************************************/
/* Includes -------------------------------------------------------------------*/
#include "board.h"
#include "dev_led.h"
/* Private typedef -------------------------------------------------------------*/
/* Private define --------------------------------------------------------------*/
/* Private macro --------------------------------------------------------------*/
/* Private constants -----------------------------------------------------------*/
static const rt_uint8_t leds_list[LEDS_MAX_NUMBER][2] = \
{
{LEDS_PIN_PORT_0, LEDS_PIN_NUMBER_0},
{LEDS_PIN_PORT_1, LEDS_PIN_NUMBER_1},
{LEDS_PIN_PORT_2, LEDS_PIN_NUMBER_2},
{LEDS_PIN_PORT_3, LEDS_PIN_NUMBER_3}
};
/* Private variables ------------------------------------------------------------*/
/* Private function prototypes ---------------------------------------------------*/
/* Private functions ------------------------------------------------------------*/
/******************************************************************//**
* @brief
* Turn on a LED
*
* @details
*
* @note
*
* @param[in] num
* LED number
*
*********************************************************************/
void rt_hw_led_on(rt_uint8_t num)
{
RT_ASSERT(num < LEDS_MAX_NUMBER);
GPIO_PinOutSet(leds_list[num][0], leds_list[num][1]);
}
/******************************************************************//**
* @brief
* Turn off a LED
*
* @details
*
* @note
*
* @param[in] num
* LED number
*
*********************************************************************/
void rt_hw_led_off(rt_uint8_t num)
{
RT_ASSERT(num < LEDS_MAX_NUMBER);
GPIO_PinOutClear(leds_list[num][0], leds_list[num][1]);
}
/******************************************************************//**
* @brief
* Toggle the state of a LED
*
* @details
*
* @note
*
* @param[in] num
* LED number
*
*********************************************************************/
void rt_hw_led_toggle(rt_uint8_t num)
{
RT_ASSERT(num < LEDS_MAX_NUMBER);
GPIO_PinOutToggle(leds_list[num][0], leds_list[num][1]);
}
rt_uint8_t rt_hw_led_state(rt_uint8_t num)
{
RT_ASSERT(num < LEDS_MAX_NUMBER);
return (rt_uint8_t)GPIO_PinInGet(leds_list[num][0], leds_list[num][1]);
}
/******************************************************************//**
* @brief
* Initialize the LEDs related GPIO
*
* @details
*
* @note
*
*********************************************************************/
void rt_hw_led_init(void)
{
rt_uint8_t i;
/* Configure GPIO */
for (i = 0; i < LEDS_MAX_NUMBER; i++)
{
GPIO_PinModeSet(
leds_list[i][0],
leds_list[i][1],
gpioModePushPull,
0);
}
}
/*********************************************************************
* Export to FINSH
*********************************************************************/
#ifdef RT_USING_FINSH
#include <finsh.h>
void list_leds(void)
{
rt_uint8_t i;
rt_kprintf(" led \t port \t pin \t state\n");
rt_kprintf(" -----\t -----\t -----\t -----\n");
for (i = 0; i < LEDS_MAX_NUMBER; i++)
{
rt_kprintf(" %d \t %x \t %x \t %x \n",
i, leds_list[i][0], leds_list[i][1], rt_hw_led_state(i));
}
}
FINSH_FUNCTION_EXPORT(list_leds, list all the LEDs.)
void set_led(rt_uint32_t led, rt_uint32_t state)
{
/* set led status */
switch (state)
{
case 0:
rt_hw_led_off(led);
break;
case 1:
rt_hw_led_on(led);
break;
default:
break;
}
}
FINSH_FUNCTION_EXPORT(set_led, turn led (0 - 3) on (1) or off (0).)
#endif
/******************************************************************//**
* @}
*********************************************************************/