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