Initial tag code

src/officesense_tag/.clangd

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+CompileFlags:
+    Remove: [-f*, -m*]

src/officesense_tag/.devcontainer/Dockerfile

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+ARG DOCKER_TAG=latest
+FROM espressif/idf:${DOCKER_TAG}
+
+ENV LC_ALL=C.UTF-8
+ENV LANG=C.UTF-8
+
+RUN apt-get update -y && apt-get install udev -y
+
+RUN echo "source /opt/esp/idf/export.sh > /dev/null 2>&1" >> ~/.bashrc
+
+ENTRYPOINT [ "/opt/esp/entrypoint.sh" ]
+
+CMD ["/bin/bash", "-c"]

src/officesense_tag/.devcontainer/devcontainer.json

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+{
+	"name": "ESP-IDF QEMU",
+	"build": {
+		"dockerfile": "Dockerfile"
+	},
+	"customizations": {
+		"vscode": {
+			"settings": {
+				"terminal.integrated.defaultProfile.linux": "bash",
+				"idf.gitPath": "/usr/bin/git"
+			},
+			"extensions": [
+				"espressif.esp-idf-extension",
+				"espressif.esp-idf-web"
+			]
+		}
+	},
+	"runArgs": ["--privileged"]
+}

src/officesense_tag/.gitignore

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+# macOS
+.DS_Store
+.AppleDouble
+.LSOverride
+
+# Directory metadata
+.directory
+
+# Temporary files
+*~
+*.swp
+*.swo
+*.bak
+*.tmp
+
+# Log files
+*.log
+
+# Build artifacts and directories
+**/build/
+build/
+*.o
+*.a
+*.out
+*.exe # For any host-side utilities compiled on Windows
+
+# ESP-IDF specific build outputs
+*.bin
+*.elf
+*.map
+flasher_args.json # Generated in build directory
+sdkconfig.old
+sdkconfig
+
+# ESP-IDF dependencies
+# For older versions or manual component management
+/components/.idf/
+**/components/.idf/
+# For modern ESP-IDF component manager
+managed_components/
+# If ESP-IDF tools are installed/referenced locally to the project
+.espressif/
+
+# CMake generated files
+CMakeCache.txt
+CMakeFiles/
+cmake_install.cmake
+install_manifest.txt
+CTestTestfile.cmake
+
+# Python environment files
+*.pyc
+*.pyo
+*.pyd
+__pycache__/
+*.egg-info/
+dist/
+
+# Virtual environment folders
+venv/
+.venv/
+env/
+
+# Language Servers
+.clangd/
+.ccls-cache/
+compile_commands.json
+
+# Windows specific
+Thumbs.db
+ehthumbs.db
+Desktop.ini
+
+# User-specific configuration files
+*.user
+*.workspace # General workspace files, can be from various tools
+*.suo       # Visual Studio Solution User Options
+*.sln.docstates # Visual Studio

src/officesense_tag/CMakeLists.txt

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+# For more information about build system see
+# https://docs.espressif.com/projects/esp-idf/en/latest/api-guides/build-system.html
+# The following five lines of boilerplate have to be in your project's
+# CMakeLists in this exact order for cmake to work correctly
+cmake_minimum_required(VERSION 3.16)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(officesense_tag)

src/officesense_tag/main/CMakeLists.txt

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+idf_component_register(SRCS "main.c"
+                    INCLUDE_DIRS ".")

src/officesense_tag/main/main.c

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+#include <stdio.h>
+#include <string.h>
+#include "nvs_flash.h"
+
+#include "nimble/nimble_port.h"
+#include "nimble/nimble_port_freertos.h"
+
+#include "host/ble_hs.h"
+#include "services/gap/ble_svc_gap.h"
+
+static const char *TAG = "BLE";
+
+static const ble_uuid128_t service_uuid =
+    BLE_UUID128_INIT(
+        0xF0, 0xDE, 0xBC, 0x9A,
+        0x78, 0x56, 0x34, 0x12,
+        0xF0, 0xDE, 0xBC, 0x9A,
+        0x78, 0x56, 0x34, 0x12);
+
+static void start_adv(void)
+{
+    struct ble_hs_adv_fields fields;
+    memset(&fields, 0, sizeof(fields));
+
+    fields.flags = BLE_HS_ADV_F_DISC_GEN | BLE_HS_ADV_F_BREDR_UNSUP;
+
+    fields.uuids128 = (ble_uuid128_t *)&service_uuid;
+    fields.num_uuids128 = 1;
+    fields.uuids128_is_complete = 1;
+
+    uint8_t mfg_data[5] = {0x34, 0x34, 0x34, 0x34, 0x34};
+
+    fields.mfg_data = mfg_data;
+    fields.mfg_data_len = sizeof(mfg_data);
+
+    int rc = ble_gap_adv_set_fields(&fields);
+    if (rc != 0)
+    {
+        ESP_LOGE(TAG, "adv set fields failed: %d", rc);
+        return;
+    }
+
+    struct ble_gap_adv_params params;
+    memset(&params, 0, sizeof(params));
+
+    params.conn_mode = BLE_GAP_CONN_MODE_NON;
+    params.disc_mode = BLE_GAP_DISC_MODE_GEN;
+    params.itvl_min = 0x80; // ~100ms
+    params.itvl_max = 0x80;
+
+    rc = ble_gap_adv_start(
+        BLE_ADDR_PUBLIC,
+        NULL,
+        BLE_HS_FOREVER,
+        &params,
+        NULL,
+        NULL);
+
+    if (rc != 0)
+    {
+        ESP_LOGE(TAG, "adv start failed: %d", rc);
+    }
+    else
+    {
+        ESP_LOGI(TAG, "advertising started");
+    }
+}
+
+static void on_sync(void)
+{
+    ESP_LOGI(TAG, "BLE synced");
+
+    start_adv();
+}
+
+static void host_task(void *param)
+{
+    nimble_port_run();
+}
+
+void app_main(void)
+{
+    ESP_ERROR_CHECK(nvs_flash_init());
+    nimble_port_init();
+
+    ble_svc_gap_init();
+    ble_svc_gap_device_name_set("XIAO_C6");
+
+    ble_hs_cfg.sync_cb = on_sync;
+
+    nimble_port_freertos_init(host_task);
+}