commit a09b16f67ba3cb8e72ceef33223ba980e7fe20f2
Author: yenru0 <yenru0604@gmail.com>
Date:   Wed Sep 17 02:35:13 2025 +0900

    initial commit

diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..3ecf124
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,13 @@
+.vscode
+.idea
+cmake-build-*/
+
+components/**/build
+components/**/sdkconfig
+components/**/sdkconfig.old
+
+build
+
+dependenceies
+
+sdkconfig
\ No newline at end of file
diff --git a/CMakeLists.txt b/CMakeLists.txt
new file mode 100644
index 0000000..5b560fd
--- /dev/null
+++ b/CMakeLists.txt
@@ -0,0 +1,17 @@
+cmake_minimum_required(VERSION 3.16)
+
+include(cfg.cmake)
+
+if (NOT DEFINED ENV{IDF_TARGET})
+    file(WRITE "cfg.cmake" "set(ENV{ESPPORT} \"COM3\")\nset(ENV{IDF_TARGET} \"esp32\")")
+    MESSAGE(FATAL_ERROR "THERE ARE NO CONFIG; CREATE NEW CONFIG.")
+endif ()
+if (NOT DEFINED ENV{ESPPORT})
+    MESSAGE(WARNING "PORT IS NOT DEFINED.")
+endif ()
+
+MESSAGE($ENV{ESPPORT})
+MESSAGE($ENV{IDF_PATH})
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(esp32-counter-example)
\ No newline at end of file
diff --git a/cfg.cmake b/cfg.cmake
new file mode 100644
index 0000000..eab2eb6
--- /dev/null
+++ b/cfg.cmake
@@ -0,0 +1,2 @@
+set(ENV{ESPPORT} "/dev/ttyUSB0")
+set(ENV{IDF_TARGET} "esp32")
\ No newline at end of file
diff --git a/main/CMakeLists.txt b/main/CMakeLists.txt
new file mode 100644
index 0000000..83d0883
--- /dev/null
+++ b/main/CMakeLists.txt
@@ -0,0 +1,13 @@
+set(srcs "src/main.cpp")
+#list(APPEND srcs "src/function/touch_graph.cpp")
+#list(APPEND srcs "src/function/server_clock.cpp")
+#list(APPEND srcs "src/connection/connect.cpp")
+#list(APPEND srcs "src/function/sd_rw.cpp")
+
+idf_component_register(
+        SRCS ${srcs}
+        #INCLUDE_DIRS "include" "include/function"
+        #REQUIRES "driver" "ssd1306" "esp_wifi" "nvs_flash" "esp-tls" "esp_http_client" "json" "sdmmc" "vfs"
+)
+set(CMAKE_CXX_STANDARD 11)
+target_compile_options(${COMPONENT_LIB} PRIVATE -std=gnu++11)
\ No newline at end of file
diff --git a/main/src/main.cpp b/main/src/main.cpp
new file mode 100644
index 0000000..997126d
--- /dev/null
+++ b/main/src/main.cpp
@@ -0,0 +1,40 @@
+#include <iostream>
+
+#include "driver/timer.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+
+static void IRAM_ATTR timer_g0_t0_isr(void *arg) {
+
+    timer_group_clr_intr_status_in_isr(TIMER_GROUP_0, TIMER_0);
+
+    timer_group_enable_alarm_in_isr(TIMER_GROUP_0, TIMER_0);
+
+    esp_rom_printf("Hello From ISR 20sec\n");
+}
+
+extern "C" void app_main() {
+
+    timer_config_t config = {
+            .alarm_en = TIMER_ALARM_EN,
+            .counter_en = TIMER_PAUSE,
+            .counter_dir = TIMER_COUNT_UP,
+            .auto_reload = TIMER_AUTORELOAD_EN,
+            .divider = 80,
+    };
+
+    const unsigned long long interval_sec = 10;
+
+    timer_init(TIMER_GROUP_0, TIMER_0, &config);
+
+    timer_set_counter_value(TIMER_GROUP_0, TIMER_0, 0x00000000ULL);
+    timer_set_alarm_value(TIMER_GROUP_0, TIMER_0, interval_sec * 1000000ULL);
+
+    timer_enable_intr(TIMER_GROUP_0, TIMER_0);
+
+    timer_isr_register(TIMER_GROUP_0, TIMER_0, timer_g0_t0_isr, NULL, ESP_INTR_FLAG_IRAM, NULL);
+
+    timer_start(TIMER_GROUP_0, TIMER_0);
+
+    while (true) { vTaskDelay(pdMS_TO_TICKS(10000)); }
+}