drivers/led/blink.c

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#include <led.h>
#include <softirq.h>
#include <app/timer.h>

static void led_blink_toggle(void *data)
{
        struct blinking_led     *blink = data;

        if (!blink->enabled) {
                blink->active = false;
                return;
        }

        if (blink->state) {
                blink->state = false;
                led_deactivate(blink->led);
        } else {
                blink->state = true;
                led_activate(blink->led);
        }

        timer_add_task_us(&led_timer, &blink->task,
                        blink->period_ms * 1000);
}

void led_blink_start(struct blinking_led *blink)
{
        softirq_disable();
        if (!blink->enabled) {
                blink->enabled = true;
                if (!blink->active) {
                        blink->state = false;
                        led_deactivate(blink->led);
                        timer_add_task_us(&led_timer, &blink->task,
                                        blink->period_ms * 1000);
                }
        }
        softirq_enable();
}

void led_blink_stop(struct blinking_led *blink)
{
        softirq_disable();
        blink->enabled = false;
        softirq_enable();
}

void led_blink_init(struct blinking_led *blink, enum board_led_id led,
                unsigned int period_ms)
{
        blink->led = led;
        blink->period_ms = period_ms;
        timer_init_task(&blink->task, led_blink_toggle, blink);
        blink->enabled = false;
        blink->active = false;
}

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