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Simplest ESP32 OTA using ESP-IDF
/*******************************************
*
* Code created by Laboratorio Gluon
* www.laboratoriogluon.com
*
********************************************/
#include "freertos/FreeRTOS.h"
#include "freertos/task.h"
#include "esp_system.h"
#include "esp_event.h"
#include "esp_log.h"
#include "esp_ota_ops.h"
#include "esp_http_client.h"
#include "esp_https_ota.h"
#include "esp_wifi.h"
#include "esp_event.h"
#include "string.h"
#include "nvs.h"
#include "nvs_flash.h"
#include <sys/socket.h>
/********** HAY QUE CAMBIAR SOLO ESTO ************/
#define BIN_URL "http://192.168.1.133:8000/firmware.bin"
/*************************************************/
extern void wifi_init_sta();
static const char *TAG = "simple_ota_example";
#define OTA_URL_SIZE 256
esp_err_t _http_event_handler(esp_http_client_event_t *evt)
{
switch (evt->event_id) {
case HTTP_EVENT_ERROR:
ESP_LOGD(TAG, "HTTP_EVENT_ERROR");
break;
case HTTP_EVENT_ON_CONNECTED:
ESP_LOGD(TAG, "HTTP_EVENT_ON_CONNECTED");
break;
case HTTP_EVENT_HEADER_SENT:
ESP_LOGD(TAG, "HTTP_EVENT_HEADER_SENT");
break;
case HTTP_EVENT_ON_HEADER:
ESP_LOGD(TAG, "HTTP_EVENT_ON_HEADER, key=%s, value=%s", evt->header_key, evt->header_value);
break;
case HTTP_EVENT_ON_DATA:
ESP_LOGD(TAG, "HTTP_EVENT_ON_DATA, len=%d", evt->data_len);
break;
case HTTP_EVENT_ON_FINISH:
ESP_LOGD(TAG, "HTTP_EVENT_ON_FINISH");
break;
case HTTP_EVENT_DISCONNECTED:
ESP_LOGD(TAG, "HTTP_EVENT_DISCONNECTED");
break;
case HTTP_EVENT_REDIRECT:
ESP_LOGD(TAG, "HTTP_EVENT_REDIRECT");
break;
}
return ESP_OK;
}
void simple_ota_example_task(void *pvParameter)
{
ESP_LOGI(TAG, "Starting OTA example task");
esp_http_client_config_t config = {
.url = BIN_URL,
.event_handler = _http_event_handler,
.keep_alive_enable = true,
};
esp_https_ota_config_t ota_config = {
.http_config = &config,
};
ESP_LOGI(TAG, "Attempting to download update from %s", config.url);
esp_err_t ret = esp_https_ota(&ota_config);
if (ret == ESP_OK) {
ESP_LOGI(TAG, "OTA Succeed, Rebooting...");
esp_restart();
} else {
ESP_LOGE(TAG, "Firmware upgrade failed");
}
while (1) {
vTaskDelay(1000 / portTICK_PERIOD_MS);
}
}
void app_main(void)
{
ESP_LOGI(TAG, "OTA example app_main start");
// Initialize NVS.
esp_err_t err = nvs_flash_init();
if (err == ESP_ERR_NVS_NO_FREE_PAGES || err == ESP_ERR_NVS_NEW_VERSION_FOUND) {
// 1.OTA app partition table has a smaller NVS partition size than the non-OTA
// partition table. This size mismatch may cause NVS initialization to fail.
// 2.NVS partition contains data in new format and cannot be recognized by this version of code.
// If this happens, we erase NVS partition and initialize NVS again.
ESP_ERROR_CHECK(nvs_flash_erase());
err = nvs_flash_init();
}
ESP_ERROR_CHECK(err);
// Initialize and connect to Wifi
wifi_init_sta();
xTaskCreate(&simple_ota_example_task, "ota_example_task", 8192, NULL, 5, NULL);
}
[env:esp32doit-devkit-v1]
platform = espressif32
board = esp32doit-devkit-v1
framework = espidf
monitor_speed = 115200
board_build.partitions=partitions_two_ota_coredump.csv
#include "freertos/FreeRTOS.h"
#include "freertos/event_groups.h"
#include "esp_wifi.h"
#include "esp_log.h"
#define WIFI_SSID <TU_SSID_AQUI>
#define WIFI_PWD <CONTRASENYA_WIFI>
static EventGroupHandle_t s_wifi_event_group;
static int s_retry_num = 0;
#define WIFI_CONNECTED_BIT BIT0
#define WIFI_FAIL_BIT BIT1
static const char *TAG = "WIFI";
static void event_handler(void* arg, esp_event_base_t event_base,
int32_t event_id, void* event_data)
{
if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_START) {
esp_wifi_connect();
} else if (event_base == WIFI_EVENT && event_id == WIFI_EVENT_STA_DISCONNECTED) {
if (s_retry_num < 5) {
esp_wifi_connect();
s_retry_num++;
ESP_LOGI(TAG, "retry to connect to the AP");
} else {
xEventGroupSetBits(s_wifi_event_group, WIFI_FAIL_BIT);
}
ESP_LOGI(TAG,"connect to the AP fail");
} else if (event_base == IP_EVENT && event_id == IP_EVENT_STA_GOT_IP) {
ip_event_got_ip_t* event = (ip_event_got_ip_t*) event_data;
ESP_LOGI(TAG, "got ip:" IPSTR, IP2STR(&event->ip_info.ip));
s_retry_num = 0;
xEventGroupSetBits(s_wifi_event_group, WIFI_CONNECTED_BIT);
}
}
void wifi_init_sta(void)
{
s_wifi_event_group = xEventGroupCreate();
ESP_ERROR_CHECK(esp_netif_init());
ESP_ERROR_CHECK(esp_event_loop_create_default());
esp_netif_create_default_wifi_sta();
wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
ESP_ERROR_CHECK(esp_wifi_init(&cfg));
esp_event_handler_instance_t instance_any_id;
esp_event_handler_instance_t instance_got_ip;
ESP_ERROR_CHECK(esp_event_handler_instance_register(WIFI_EVENT,
ESP_EVENT_ANY_ID,
&event_handler,
NULL,
&instance_any_id));
ESP_ERROR_CHECK(esp_event_handler_instance_register(IP_EVENT,
IP_EVENT_STA_GOT_IP,
&event_handler,
NULL,
&instance_got_ip));
wifi_config_t wifi_config = {
.sta = {
.ssid = WIFI_SSID,
.password = WIFI_PWD,
.threshold.authmode = WIFI_AUTH_WPA2_PSK,
},
};
ESP_ERROR_CHECK(esp_wifi_set_mode(WIFI_MODE_STA) );
ESP_ERROR_CHECK(esp_wifi_set_config(WIFI_IF_STA, &wifi_config) );
ESP_ERROR_CHECK(esp_wifi_start() );
ESP_LOGI(TAG, "wifi_init_sta finished.");
EventBits_t bits = xEventGroupWaitBits(s_wifi_event_group,
WIFI_CONNECTED_BIT | WIFI_FAIL_BIT,
pdFALSE,
pdFALSE,
portMAX_DELAY);
}
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