examples: generic cmake support examples

2025-11-23 03:39:33 +00:00 · 2018-11-11 15:36:24 +08:00
parent 0908fba1a3
commit 90f5432f2a
17 changed files with 303 additions and 3 deletions
--- a/examples/build_system/cmake/import_lib/main/main.cpp
+++ b/examples/build_system/cmake/import_lib/main/main.cpp
@@ -0,0 +1,72 @@
+#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");
+}