esp-mqtt/lib/platform_esp32_idf.c

#include "platform.h"

#ifdef ESP_PLATFORM
#include "esp_log.h"
#include "esp_mac.h"
#include "esp_timer.h"
#include "esp_random.h"
#include <stdlib.h>
#include <stdint.h>

static const char *TAG = "platform";

#define MAX_ID_STRING (32)

char *platform_create_id_string(void)
{
    uint8_t mac[6];
    char *id_string = calloc(1, MAX_ID_STRING);
    ESP_MEM_CHECK(TAG, id_string, return NULL);
    esp_read_mac(mac, ESP_MAC_WIFI_STA);
    sprintf(id_string, "ESP32_%02x%02X%02X", mac[3], mac[4], mac[5]);
    return id_string;
}

int platform_random(int max)
{
    return esp_random() % max;
}

uint64_t platform_tick_get_ms(void)
{
    return esp_timer_get_time()/(int64_t)1000;
}

#endif