SolarEnergy/esp32_device/main/relays.c

#include <driver/gpio.h>
#include "esp_log.h"

#include "relays.h"
#include "constants.h"

static const char *TAG = "relays";

/**
 * Device relays GPIO ids
 */
static int DEVICE_GPIO_IDS[3] = {4, 14, 15};

int relays_count()
{
    return sizeof(DEVICE_GPIO_IDS) / sizeof(int);
}

void relays_setup()
{
    int pin_bit_mask = 0;
    for (size_t i = 0; i < relays_count(); i++)
    {
        pin_bit_mask |= 1ULL << DEVICE_GPIO_IDS[i];
    }

    // zero-initialize the config structure.
    gpio_config_t io_conf = {};
    // disable interrupt
    io_conf.intr_type = GPIO_INTR_DISABLE;
    // set as output mode
    io_conf.mode = GPIO_MODE_OUTPUT;
    // bit mask of the pins that you want to set,e.g.GPIO18/19
    io_conf.pin_bit_mask = pin_bit_mask;
    // disable pull-down mode
    io_conf.pull_down_en = 0;
    // disable pull-up mode
    io_conf.pull_up_en = 0;
    // configure GPIO with the given settings
    gpio_config(&io_conf);
}

void relays_turn_off_all()
{
    ESP_LOGI(TAG, "Turning off all relays...");

    for (size_t i = 0; i < relays_count(); i++)
    {
        relays_set(i, false);
    }
}

void relays_set(int number, bool is_on)
{
    size_t gpio_id = DEVICE_GPIO_IDS[number];
    ESP_LOGI(TAG, "Set relay %d (gpio %d) to %s", number, gpio_id, is_on ? "on" : "off");

    int res = gpio_set_level(gpio_id, is_on ? 0 : 1);
    if (res != ESP_OK)
    {
        ESP_LOGE(TAG, "Failed to toggle GPIO %d : %d", gpio_id, res);
    }
}