bacnet_stack/ports/xplained/led.c

/**
 * @file
 * @brief LED configuration and operation
 * @author Steve Karg <skarg@users.sourceforge.net>
 * @date 2014
 * @copyright SPDX-License-Identifier: MIT
 */
#include <stdint.h>
#include "board.h"
#include "ioport.h"
#include "bacnet/basic/sys/mstimer.h"
#include "led.h"

#ifdef CONF_BOARD_ENABLE_RS485_XPLAINED
#define RS485_XPLAINED_LD1 IOPORT_CREATE_PIN(PORTC, 6)
#define RS485_XPLAINED_LD2 IOPORT_CREATE_PIN(PORTC, 7)
#define RS485_XPLAINED_LD3 IOPORT_CREATE_PIN(PORTC, 4)
#define RS485_XPLAINED_LD4 IOPORT_CREATE_PIN(PORTC, 5)

static struct itimer Off_Delay_Timer[LEDS_MAX];

/*************************************************************************
 * Description: Turn on an LED
 * Returns: none
 * Notes: none
 *************************************************************************/
void led_on(uint8_t index)
{
    switch (index) {
        case 0:
            ioport_set_value(RS485_XPLAINED_LD1, 1);
            break;
        case 1:
            ioport_set_value(RS485_XPLAINED_LD2, 1);
            break;
        case 2:
            ioport_set_value(RS485_XPLAINED_LD3, 1);
            break;
        case 3:
            ioport_set_value(RS485_XPLAINED_LD4, 1);
            break;
        default:
            break;
    }
    if (index < LEDS_MAX) {
        timer_interval_infinity(&Off_Delay_Timer[index]);
    }
}

/*************************************************************************
 * Description: Turn off an LED
 * Returns: none
 * Notes: none
 *************************************************************************/
void led_off(uint8_t index)
{
    switch (index) {
        case 0:
            ioport_set_value(RS485_XPLAINED_LD1, 0);
            break;
        case 1:
            ioport_set_value(RS485_XPLAINED_LD2, 0);
            break;
        case 2:
            ioport_set_value(RS485_XPLAINED_LD3, 0);
            break;
        case 3:
            ioport_set_value(RS485_XPLAINED_LD4, 0);
            break;
        default:
            break;
    }
    if (index < LEDS_MAX) {
        timer_interval_infinity(&Off_Delay_Timer[index]);
    }
}

/*************************************************************************
 * Description: Get the state of the LED
 * Returns: true if on, false if off.
 * Notes: none
 *************************************************************************/
bool led_state(uint8_t index)
{
    switch (index) {
        case 0:
            return ioport_pin_is_high(RS485_XPLAINED_LD1);
        case 1:
            return ioport_pin_is_high(RS485_XPLAINED_LD2);
        case 2:
            return ioport_pin_is_high(RS485_XPLAINED_LD3);
        case 3:
            return ioport_pin_is_high(RS485_XPLAINED_LD4);
        default:
            break;
    }

    return false;
}

/*************************************************************************
 * Description: Toggle the state of the setup LED
 * Returns: none
 * Notes: none
 *************************************************************************/
void led_toggle(uint8_t index)
{
    if (led_state(index)) {
        led_off(index);
    } else {
        led_on(index);
    }
}

/*************************************************************************
 * Description: Delay before going off to give minimum brightness.
 * Returns: none
 * Notes: none
 *************************************************************************/
void led_off_delay(uint8_t index, uint32_t delay_ms)
{
    if (index < LEDS_MAX) {
        timer_interval_start(&Off_Delay_Timer[index], delay_ms);
    }
}

/*************************************************************************
 * Description: Turn on, and delay before going off.
 * Returns: none
 * Notes: none
 *************************************************************************/
void led_on_interval(uint8_t index, uint16_t interval_ms)
{
    if (index < LEDS_MAX) {
        led_on(index);
        timer_interval_start(&Off_Delay_Timer[index], interval_ms);
    }
}

/*************************************************************************
 * Description: Task for blinking LED
 * Returns: none
 * Notes: none
 *************************************************************************/
void led_task(void)
{
    uint8_t i; /* loop counter */

    for (i = 0; i < LEDS_MAX; i++) {
        if (timer_interval_expired(&Off_Delay_Timer[i])) {
            timer_interval_infinity(&Off_Delay_Timer[i]);
            led_off(i);
        }
    }
}

/*************************************************************************
 * Description: Initialize the LED hardware
 * Returns: none
 * Notes: none
 *************************************************************************/
void led_init(void)
{
    uint8_t i; /* loop counter */

    /* configure the LEDs for Rx and Tx indication */
    ioport_configure_pin(
        RS485_XPLAINED_LD1, IOPORT_DIR_OUTPUT | IOPORT_INIT_LOW);
    ioport_configure_pin(
        RS485_XPLAINED_LD2, IOPORT_DIR_OUTPUT | IOPORT_INIT_LOW);
    ioport_configure_pin(
        RS485_XPLAINED_LD3, IOPORT_DIR_OUTPUT | IOPORT_INIT_LOW);
    ioport_configure_pin(
        RS485_XPLAINED_LD4, IOPORT_DIR_OUTPUT | IOPORT_INIT_LOW);
    /* initialize the timers, while giving LEDs a brief test */
    for (i = 0; i < LEDS_MAX; i++) {
        led_on(i);
        led_off_delay(i, 500);
    }
}
#endif