rt-thread/bsp/efm32/dev_led.c

/***************************************************************************//**
 * @file    dev_led.c
 * @brief   LED driver of RT-Thread RTOS for EFM32
 *  COPYRIGHT (C) 2012, RT-Thread Development Team
 * @author  onelife
 * @version 1.0
 *******************************************************************************
 * @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
 * 2011-05-06   onelife     Add EFM32 development kit support
 * 2011-12-08   onelife     Add giant gecko development kit support
 ******************************************************************************/

/***************************************************************************//**
 * @addtogroup efm32
 * @{
 ******************************************************************************/

/* Includes ------------------------------------------------------------------*/
#include "board.h"
#include "dev_led.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private constants ---------------------------------------------------------*/
#if defined(EFM32_G8XX_STK)
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}
};
#endif

/* 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);

#if defined(EFM32_G8XX_STK)
    GPIO_PinOutSet(leds_list[num][0], leds_list[num][1]);
#elif (defined(EFM32_GXXX_DK) || defined(EFM32GG_DK3750))
{
    rt_uint16_t leds;

    leds = DVK_getLEDs() | (rt_uint16_t)(1 << num);
    DVK_setLEDs(leds);
}
#endif
}

/***************************************************************************//**
 * @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);

#if defined(EFM32_G8XX_STK)
    GPIO_PinOutClear(leds_list[num][0], leds_list[num][1]);
#elif (defined(EFM32_GXXX_DK) || defined(EFM32GG_DK3750))
{
    rt_uint16_t leds;

    leds = DVK_getLEDs() & ~(rt_uint16_t)(1 << num);
    DVK_setLEDs(leds);
}
#endif
}

/***************************************************************************//**
 * @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);

#if defined(EFM32_G8XX_STK)
    GPIO_PinOutToggle(leds_list[num][0], leds_list[num][1]);
#elif (defined(EFM32_GXXX_DK) || defined(EFM32GG_DK3750))
{
    rt_uint16_t leds;

    leds = DVK_getLEDs() ^ (rt_uint16_t)(1 << num);
    DVK_setLEDs(leds);
}
#endif
}

rt_uint8_t rt_hw_led_state(rt_uint8_t num)
{
    RT_ASSERT(num < LEDS_MAX_NUMBER);

#if defined(EFM32_G8XX_STK)
    return (rt_uint8_t)GPIO_PinInGet(leds_list[num][0], leds_list[num][1]);
#elif (defined(EFM32_GXXX_DK) || defined(EFM32GG_DK3750))
    return ((DVK_getLEDs() & (rt_uint16_t)(1 << num)) >> num);
#endif

}

/***************************************************************************//**
 * @brief
 *   Initialize the LEDs related GPIO
 *
 * @details
 *
 * @note
 *
 * @return
 *   Error code
 ******************************************************************************/
rt_err_t rt_hw_led_init(void)
{
#if defined(EFM32_G8XX_STK)
    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);
    }
#endif
    return RT_EOK;
}

/***************************************************************************//**
 *  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++)
    {
#if defined(EFM32_G8XX_STK)
        rt_kprintf(" %d    \t %x    \t %x    \t %x    \n",
            i, leds_list[i][0], leds_list[i][1], rt_hw_led_state(i));
#elif (defined(EFM32_GXXX_DK) || defined(EFM32GG_DK3750))
        rt_uint16_t leds;

        leds = DVK_getLEDs();
        rt_kprintf(" %d    \t FPGA \t FPGA \t %x      \n",
            i, (leds & (1 << i))? 1 : 0);
#endif
    }
}
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

/***************************************************************************//**
 * @}
 ******************************************************************************/