#include <stdio.h> #include <string.h> #include <sys/unistd.h> #include <sys/stat.h> #include <stdlib.h> #include <string.h> #include "esp_err.h" #include "esp_log.h" #include "esp_vfs_fat.h" #include "lib/tinyxml2/tinyxml2.h" using namespace tinyxml2; static const char *TAG = "example"; // Handle of the wear levelling library instance static wl_handle_t s_wl_handle = WL_INVALID_HANDLE; // Mount path for the partition const char *base_path = "/spiflash"; extern "C" void app_main(void) { // Do example setup ESP_LOGI(TAG, "Setting up..."); esp_vfs_fat_mount_config_t mount_config; mount_config.max_files = 4; mount_config.format_if_mount_failed = true; mount_config.allocation_unit_size = CONFIG_WL_SECTOR_SIZE; esp_err_t err = esp_vfs_fat_spiflash_mount(base_path, "storage", &mount_config, &s_wl_handle); if (err != ESP_OK) { ESP_LOGE(TAG, "Failed to mount FATFS (%s)", esp_err_to_name(err)); return; } // The sample XML is embedded binary data. Create a file first containing the embedded // so it can be accessed. ESP_LOGI(TAG, "Copying sample XML to filesystem..."); extern const char data_start[] asm("_binary_sample_xml_start"); extern const char data_end[] asm("_binary_sample_xml_end"); FILE *f = fopen("/spiflash/sample.xml", "wb"); if (f == NULL) { ESP_LOGE(TAG, "Failed to open file for writing"); return; } fwrite(data_start, sizeof(char), data_end - data_start + 1, f); fclose(f); // Now that the file is created, load it using tinyxml2 and parse ESP_LOGI(TAG, "Reading XML file"); XMLDocument data; data.LoadFile("/spiflash/sample.xml"); XMLPrinter printer; data.Print(&printer); ESP_LOGI(TAG, "Read XML data:\n%s", printer.CStr()); const char* to_data = data.FirstChildElement("note")->FirstChildElement("to")->GetText(); const char* from_data = data.FirstChildElement("note")->FirstChildElement("from")->GetText(); const char* heading_data = data.FirstChildElement("note")->FirstChildElement("heading")->GetText(); const char* body_data = data.FirstChildElement("note")->FirstChildElement("body")->GetText(); ESP_LOGI(TAG, "Parsed XML data:\n\nTo: %s\nFrom: %s\nHeading: %s\nBody: %s", to_data, from_data, heading_data, body_data); ESP_LOGI(TAG, "Example end"); }