211 lines
7.1 KiB
C
211 lines
7.1 KiB
C
/* OTA example
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This example code is in the Public Domain (or CC0 licensed, at your option.)
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Unless required by applicable law or agreed to in writing, this
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software is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR
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CONDITIONS OF ANY KIND, either express or implied.
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*/
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#include "freertos/FreeRTOS.h"
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#include "freertos/task.h"
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#include "freertos/event_groups.h"
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#include "esp_system.h"
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#include "esp_wifi.h"
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#include "esp_event_loop.h"
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#include "esp_log.h"
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#include "esp_ota_ops.h"
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#include "esp_http_client.h"
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#include "nvs.h"
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#include "nvs_flash.h"
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#define EXAMPLE_WIFI_SSID CONFIG_WIFI_SSID
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#define EXAMPLE_WIFI_PASS CONFIG_WIFI_PASSWORD
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#define EXAMPLE_SERVER_URL CONFIG_FIRMWARE_UPG_URL
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#define BUFFSIZE 1024
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static const char *TAG = "native_ota_example";
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/*an ota data write buffer ready to write to the flash*/
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static char ota_write_data[BUFFSIZE + 1] = { 0 };
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extern const uint8_t server_cert_pem_start[] asm("_binary_ca_cert_pem_start");
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extern const uint8_t server_cert_pem_end[] asm("_binary_ca_cert_pem_end");
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/* FreeRTOS event group to signal when we are connected & ready to make a request */
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static EventGroupHandle_t wifi_event_group;
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/* The event group allows multiple bits for each event,
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but we only care about one event - are we connected
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to the AP with an IP? */
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const int CONNECTED_BIT = BIT0;
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static esp_err_t event_handler(void *ctx, system_event_t *event)
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{
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switch (event->event_id) {
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case SYSTEM_EVENT_STA_START:
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esp_wifi_connect();
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break;
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case SYSTEM_EVENT_STA_GOT_IP:
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xEventGroupSetBits(wifi_event_group, CONNECTED_BIT);
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break;
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case SYSTEM_EVENT_STA_DISCONNECTED:
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/* This is a workaround as ESP32 WiFi libs don't currently
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auto-reassociate. */
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esp_wifi_connect();
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xEventGroupClearBits(wifi_event_group, CONNECTED_BIT);
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break;
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default:
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break;
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}
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return ESP_OK;
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}
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static void initialise_wifi(void)
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{
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tcpip_adapter_init();
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wifi_event_group = xEventGroupCreate();
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ESP_ERROR_CHECK( esp_event_loop_init(event_handler, NULL) );
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wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
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ESP_ERROR_CHECK( esp_wifi_init(&cfg) );
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ESP_ERROR_CHECK( esp_wifi_set_storage(WIFI_STORAGE_RAM) );
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wifi_config_t wifi_config = {
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.sta = {
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.ssid = EXAMPLE_WIFI_SSID,
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.password = EXAMPLE_WIFI_PASS,
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},
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};
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ESP_LOGI(TAG, "Setting WiFi configuration SSID %s...", wifi_config.sta.ssid);
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ESP_ERROR_CHECK( esp_wifi_set_mode(WIFI_MODE_STA) );
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ESP_ERROR_CHECK( esp_wifi_set_config(ESP_IF_WIFI_STA, &wifi_config) );
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ESP_ERROR_CHECK( esp_wifi_start() );
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}
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static void http_cleanup(esp_http_client_handle_t client)
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{
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esp_http_client_close(client);
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esp_http_client_cleanup(client);
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}
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static void __attribute__((noreturn)) task_fatal_error()
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{
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ESP_LOGE(TAG, "Exiting task due to fatal error...");
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(void)vTaskDelete(NULL);
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while (1) {
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;
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}
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}
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static void ota_example_task(void *pvParameter)
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{
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esp_err_t err;
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/* update handle : set by esp_ota_begin(), must be freed via esp_ota_end() */
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esp_ota_handle_t update_handle = 0 ;
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const esp_partition_t *update_partition = NULL;
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ESP_LOGI(TAG, "Starting OTA example...");
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const esp_partition_t *configured = esp_ota_get_boot_partition();
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const esp_partition_t *running = esp_ota_get_running_partition();
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if (configured != running) {
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ESP_LOGW(TAG, "Configured OTA boot partition at offset 0x%08x, but running from offset 0x%08x",
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configured->address, running->address);
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ESP_LOGW(TAG, "(This can happen if either the OTA boot data or preferred boot image become corrupted somehow.)");
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}
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ESP_LOGI(TAG, "Running partition type %d subtype %d (offset 0x%08x)",
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running->type, running->subtype, running->address);
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/* Wait for the callback to set the CONNECTED_BIT in the
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event group.
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*/
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xEventGroupWaitBits(wifi_event_group, CONNECTED_BIT,
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false, true, portMAX_DELAY);
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ESP_LOGI(TAG, "Connect to Wifi ! Start to Connect to Server....");
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esp_http_client_config_t config = {
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.url = EXAMPLE_SERVER_URL,
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.cert_pem = (char *)server_cert_pem_start,
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};
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esp_http_client_handle_t client = esp_http_client_init(&config);
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if (client == NULL) {
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ESP_LOGE(TAG, "Failed to initialise HTTP connection");
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task_fatal_error();
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}
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err = esp_http_client_open(client, 0);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "Failed to open HTTP connection: %s", esp_err_to_name(err));
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esp_http_client_cleanup(client);
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task_fatal_error();
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}
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esp_http_client_fetch_headers(client);
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update_partition = esp_ota_get_next_update_partition(NULL);
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ESP_LOGI(TAG, "Writing to partition subtype %d at offset 0x%x",
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update_partition->subtype, update_partition->address);
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assert(update_partition != NULL);
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err = esp_ota_begin(update_partition, OTA_SIZE_UNKNOWN, &update_handle);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "esp_ota_begin failed (%s)", esp_err_to_name(err));
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http_cleanup(client);
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task_fatal_error();
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}
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ESP_LOGI(TAG, "esp_ota_begin succeeded");
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int binary_file_length = 0;
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/*deal with all receive packet*/
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while (1) {
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int data_read = esp_http_client_read(client, ota_write_data, BUFFSIZE);
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if (data_read < 0) {
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ESP_LOGE(TAG, "Error: SSL data read error");
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http_cleanup(client);
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task_fatal_error();
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} else if (data_read > 0) {
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err = esp_ota_write( update_handle, (const void *)ota_write_data, data_read);
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if (err != ESP_OK) {
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http_cleanup(client);
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task_fatal_error();
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}
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binary_file_length += data_read;
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ESP_LOGD(TAG, "Written image length %d", binary_file_length);
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} else if (data_read == 0) {
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ESP_LOGI(TAG, "Connection closed,all data received");
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break;
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}
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}
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ESP_LOGI(TAG, "Total Write binary data length : %d", binary_file_length);
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if (esp_ota_end(update_handle) != ESP_OK) {
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ESP_LOGE(TAG, "esp_ota_end failed!");
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http_cleanup(client);
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task_fatal_error();
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}
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err = esp_ota_set_boot_partition(update_partition);
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if (err != ESP_OK) {
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ESP_LOGE(TAG, "esp_ota_set_boot_partition failed (%s)!", esp_err_to_name(err));
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http_cleanup(client);
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task_fatal_error();
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}
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ESP_LOGI(TAG, "Prepare to restart system!");
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esp_restart();
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return ;
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}
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void app_main()
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{
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// Initialize NVS.
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esp_err_t err = nvs_flash_init();
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if (err == ESP_ERR_NVS_NO_FREE_PAGES) {
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// OTA app partition table has a smaller NVS partition size than the non-OTA
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// partition table. This size mismatch may cause NVS initialization to fail.
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// If this happens, we erase NVS partition and initialize NVS again.
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ESP_ERROR_CHECK(nvs_flash_erase());
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err = nvs_flash_init();
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}
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ESP_ERROR_CHECK( err );
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initialise_wifi();
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xTaskCreate(&ota_example_task, "ota_example_task", 8192, NULL, 5, NULL);
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}
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