diff --git a/components/esp_coex/test_apps/.build-test-rules.yml b/components/esp_coex/test_apps/.build-test-rules.yml
new file mode 100644
index 0000000000..164dd0b2dd
--- /dev/null
+++ b/components/esp_coex/test_apps/.build-test-rules.yml
@@ -0,0 +1,6 @@
+# Documentation: .gitlab/ci/README.md#manifest-file-to-control-the-buildtest-apps
+
+components/esp_coex/test_apps/:
+  disable:
+    - if: IDF_TARGET not in ["esp32s2", "esp32s3", "esp32c3", "esp32c2", "esp32c6", "esp32h2", "esp32c5", "esp32c61"]
+      reason: only supported with s2, s3, c3, c2, c6, h2, c5 and c61
diff --git a/components/esp_coex/test_apps/external_coex_function/CMakeLists.txt b/components/esp_coex/test_apps/external_coex_function/CMakeLists.txt
new file mode 100644
index 0000000000..398e566225
--- /dev/null
+++ b/components/esp_coex/test_apps/external_coex_function/CMakeLists.txt
@@ -0,0 +1,10 @@
+#This is the project CMakeLists.txt file for the test subproject
+cmake_minimum_required(VERSION 3.22)
+
+set(EXTRA_COMPONENT_DIRS "$ENV{IDF_PATH}/tools/test_apps/components")
+
+# "Trim" the build. Include the minimal set of components, main, and anything it depends on.
+set(COMPONENTS main)
+
+include($ENV{IDF_PATH}/tools/cmake/project.cmake)
+project(external_coex_function)
diff --git a/components/esp_coex/test_apps/external_coex_function/README.md b/components/esp_coex/test_apps/external_coex_function/README.md
new file mode 100644
index 0000000000..703fb1bde3
--- /dev/null
+++ b/components/esp_coex/test_apps/external_coex_function/README.md
@@ -0,0 +1,3 @@
+| Supported Targets | ESP32-C2 | ESP32-C3 | ESP32-C5 | ESP32-C6 | ESP32-C61 | ESP32-H2 | ESP32-S2 | ESP32-S3 |
+| ----------------- | -------- | -------- | -------- | -------- | --------- | -------- | -------- | -------- |
+
diff --git a/components/esp_coex/test_apps/external_coex_function/main/CMakeLists.txt b/components/esp_coex/test_apps/external_coex_function/main/CMakeLists.txt
new file mode 100644
index 0000000000..32eca2331e
--- /dev/null
+++ b/components/esp_coex/test_apps/external_coex_function/main/CMakeLists.txt
@@ -0,0 +1,4 @@
+idf_component_register(SRC_DIRS .
+                       PRIV_INCLUDE_DIRS . ${CMAKE_CURRENT_BINARY_DIR}
+                       PRIV_REQUIRES cmock test_utils nvs_flash esp_common esp_wifi esp_event esp_coex
+                       WHOLE_ARCHIVE)
diff --git a/components/esp_coex/test_apps/external_coex_function/main/app_main.c b/components/esp_coex/test_apps/external_coex_function/main/app_main.c
new file mode 100644
index 0000000000..ae9ef2316f
--- /dev/null
+++ b/components/esp_coex/test_apps/external_coex_function/main/app_main.c
@@ -0,0 +1,48 @@
+/*
+ * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Unlicense OR CC0-1.0
+ */
+#include "unity.h"
+#include "nvs_flash.h"
+#include "nvs.h"
+#include "esp_err.h"
+#include "esp_netif.h"
+
+#include "esp_heap_caps.h"
+
+// Some resources are lazy allocated in wifi or event handler
+#define TEST_MEMORY_LEAK_THRESHOLD (-1536)
+
+static size_t before_free_8bit;
+static size_t before_free_32bit;
+
+static void check_leak(size_t before_free, size_t after_free, const char *type)
+{
+    ssize_t delta = after_free - before_free;
+    printf("MALLOC_CAP_%s: Before %u bytes free, After %u bytes free (delta %d)\n", type, before_free, after_free, delta);
+    TEST_ASSERT_MESSAGE(delta >= TEST_MEMORY_LEAK_THRESHOLD, "memory leak");
+}
+
+void setUp(void)
+{
+    before_free_8bit = heap_caps_get_free_size(MALLOC_CAP_8BIT);
+    before_free_32bit = heap_caps_get_free_size(MALLOC_CAP_32BIT);
+}
+
+void tearDown(void)
+{
+    size_t after_free_8bit = heap_caps_get_free_size(MALLOC_CAP_8BIT);
+    size_t after_free_32bit = heap_caps_get_free_size(MALLOC_CAP_32BIT);
+    check_leak(before_free_8bit, after_free_8bit, "8BIT");
+    check_leak(before_free_32bit, after_free_32bit, "32BIT");
+}
+
+void app_main(void)
+{
+    ESP_ERROR_CHECK(nvs_flash_init());
+    ESP_ERROR_CHECK(esp_netif_init());
+    unity_run_menu();
+    ESP_ERROR_CHECK(esp_netif_deinit());
+    ESP_ERROR_CHECK(nvs_flash_deinit());
+}
diff --git a/components/esp_coex/test_apps/external_coex_function/main/test_enable_extern_coex.c b/components/esp_coex/test_apps/external_coex_function/main/test_enable_extern_coex.c
new file mode 100644
index 0000000000..11005c4099
--- /dev/null
+++ b/components/esp_coex/test_apps/external_coex_function/main/test_enable_extern_coex.c
@@ -0,0 +1,64 @@
+/*
+ * SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+ *
+ * SPDX-License-Identifier: Unlicense OR CC0-1.0
+ */
+#include "unity.h"
+#include "esp_wifi.h"
+#include "esp_coexist.h"
+#include "soc/soc_caps.h"
+#include "esp_log.h"
+#include "test_utils.h"
+#include "unity_test_utils.h"
+#include "esp_private/periph_ctrl.h"
+
+#define TAG "test_external_coex"
+#define EMPH_STR(s) "****** "s" ******"
+
+TEST_CASE("enable external coex", "[external_coex]")
+{
+#if !SOC_MODEM_CLOCK_IS_INDEPENDENT && !CONFIG_IDF_TARGET_ESP32C2
+    wifi_init_config_t cfg = WIFI_INIT_CONFIG_DEFAULT();
+    cfg.nvs_enable = false;
+    ESP_LOGI(TAG, EMPH_STR("esp_wifi_init"));
+    TEST_ESP_OK(esp_wifi_init(&cfg));
+#endif
+
+#if CONFIG_IDF_TARGET_ESP32S2
+#define EXTERNAL_COEX_CONF 0x60035118
+#define WDEV_RW_BT_COEX_EN (BIT(0))
+#elif CONFIG_IDF_TARGET_ESP32C3 || CONFIG_IDF_TARGET_ESP32S3
+#define EXTERNAL_COEX_CONF 0x60035084
+#define WDEV_RW_BT_COEX_EN (BIT(0))
+#elif CONFIG_IDF_TARGET_ESP32C2
+#define EXTERNAL_COEX_CONF 0x6004C4A0
+#define WDEV_RW_BT_COEX_EN (BIT(9))
+#elif CONFIG_IDF_TARGET_ESP32C5 || CONFIG_IDF_TARGET_ESP32C6 || CONFIG_IDF_TARGET_ESP32C61
+#define EXTERNAL_COEX_CONF 0x600AF4A0
+#define WDEV_RW_BT_COEX_EN (BIT(9))
+#elif CONFIG_IDF_TARGET_ESP32H2
+#define EXTERNAL_COEX_CONF 0x600AD4A0
+#define WDEV_RW_BT_COEX_EN (BIT(9))
+#endif
+
+    esp_extern_coex_work_mode_t mode = EXTERNAL_COEX_LEADER_ROLE;
+    external_coex_wire_t type = EXTERN_COEX_WIRE_3;
+    esp_external_coex_gpio_set_t gpio_pin = {.request = 0, .priority = 1, .grant = 2};
+    TEST_ESP_OK(esp_external_coex_set_work_mode(mode));
+    TEST_ESP_OK(esp_enable_extern_coex_gpio_pin(type, gpio_pin));
+
+    ESP_LOGI(TAG, "external coex config 0x%lx", REG_READ(EXTERNAL_COEX_CONF));
+    TEST_ASSERT(REG_GET_BIT(EXTERNAL_COEX_CONF, WDEV_RW_BT_COEX_EN));
+
+    TEST_ESP_OK(esp_disable_extern_coex_gpio_pin());
+    coex_module_enable();
+    TEST_ASSERT(REG_GET_BIT(EXTERNAL_COEX_CONF, WDEV_RW_BT_COEX_EN) == 0);
+    coex_module_disable();
+
+#if !SOC_MODEM_CLOCK_IS_INDEPENDENT && !CONFIG_IDF_TARGET_ESP32C2
+    ESP_LOGI(TAG, EMPH_STR("esp_wifi_deinit"));
+    TEST_ESP_OK(esp_wifi_deinit());
+#endif
+
+    ESP_LOGI(TAG, "test passed...");
+}
diff --git a/components/esp_coex/test_apps/external_coex_function/pytest_external_coex_function.py b/components/esp_coex/test_apps/external_coex_function/pytest_external_coex_function.py
new file mode 100644
index 0000000000..1e8ff63036
--- /dev/null
+++ b/components/esp_coex/test_apps/external_coex_function/pytest_external_coex_function.py
@@ -0,0 +1,56 @@
+# SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+# SPDX-License-Identifier: Unlicense OR CC0-1.0
+import pytest
+from pytest_embedded import Dut
+from pytest_embedded_idf.utils import idf_parametrize
+
+
+@pytest.mark.generic
+@idf_parametrize(
+    'target', ['esp32h2', 'esp32c3', 'esp32s2', 'esp32s3', 'esp32c6', 'esp32c61', 'esp32c5'], indirect=['target']
+)
+def test_external_coex_unit_test(dut: Dut) -> None:
+    dut.run_all_single_board_cases()
+
+
+@pytest.mark.xtal_26mhz
+@pytest.mark.generic
+@pytest.mark.parametrize(
+    'config, baud',
+    [
+        ('esp32c2_xtal26m', '74880'),
+    ],
+    indirect=True,
+)
+@idf_parametrize('target', ['esp32c2'], indirect=['target'])
+def test_external_coex_unit_test_esp32c2_xtal26m(dut: Dut) -> None:
+    dut.run_all_single_board_cases()
+
+
+@pytest.mark.esp32c2eco4
+@pytest.mark.xtal_26mhz
+@pytest.mark.generic
+@pytest.mark.parametrize(
+    'config, baud',
+    [
+        ('esp32c2eco4_xtal26m', '74880'),
+    ],
+    indirect=True,
+)
+@idf_parametrize('target', ['esp32c2'], indirect=['target'])
+def test_external_coex_unit_test_esp32c2eco4_xtal26m(dut: Dut) -> None:
+    dut.run_all_single_board_cases()
+
+
+@pytest.mark.esp32c3eco7
+@pytest.mark.generic
+@pytest.mark.parametrize(
+    'config',
+    [
+        'esp32c3eco7',
+    ],
+    indirect=True,
+)
+@idf_parametrize('target', ['esp32c3'], indirect=['target'])
+def test_external_coex_unit_test_esp32c3eco7(dut: Dut) -> None:
+    dut.run_all_single_board_cases()
diff --git a/components/esp_coex/test_apps/external_coex_function/sdkconfig.ci b/components/esp_coex/test_apps/external_coex_function/sdkconfig.ci
new file mode 100644
index 0000000000..e69de29bb2
diff --git a/components/esp_coex/test_apps/external_coex_function/sdkconfig.ci.esp32c2_xtal26m b/components/esp_coex/test_apps/external_coex_function/sdkconfig.ci.esp32c2_xtal26m
new file mode 100644
index 0000000000..172f022b67
--- /dev/null
+++ b/components/esp_coex/test_apps/external_coex_function/sdkconfig.ci.esp32c2_xtal26m
@@ -0,0 +1,2 @@
+CONFIG_IDF_TARGET="esp32c2"
+CONFIG_XTAL_FREQ_26=y
diff --git a/components/esp_coex/test_apps/external_coex_function/sdkconfig.ci.esp32c2eco4_xtal26m b/components/esp_coex/test_apps/external_coex_function/sdkconfig.ci.esp32c2eco4_xtal26m
new file mode 100644
index 0000000000..651a6cc578
--- /dev/null
+++ b/components/esp_coex/test_apps/external_coex_function/sdkconfig.ci.esp32c2eco4_xtal26m
@@ -0,0 +1,3 @@
+CONFIG_IDF_TARGET="esp32c2"
+CONFIG_XTAL_FREQ_26=y
+CONFIG_ESP32C2_REV_MIN_200=y
diff --git a/components/esp_coex/test_apps/external_coex_function/sdkconfig.ci.esp32c3eco7 b/components/esp_coex/test_apps/external_coex_function/sdkconfig.ci.esp32c3eco7
new file mode 100644
index 0000000000..ad055155c9
--- /dev/null
+++ b/components/esp_coex/test_apps/external_coex_function/sdkconfig.ci.esp32c3eco7
@@ -0,0 +1,2 @@
+CONFIG_IDF_TARGET="esp32c3"
+CONFIG_ESP32C3_REV_MIN_101=y
diff --git a/components/esp_coex/test_apps/external_coex_function/sdkconfig.defaults b/components/esp_coex/test_apps/external_coex_function/sdkconfig.defaults
new file mode 100644
index 0000000000..3c07115d64
--- /dev/null
+++ b/components/esp_coex/test_apps/external_coex_function/sdkconfig.defaults
@@ -0,0 +1,4 @@
+
+# ignore task watchdog triggered by unity_run_menu
+CONFIG_ESP_TASK_WDT_EN=n
+CONFIG_ESP_COEX_EXTERNAL_COEXIST_ENABLE=y