fix(xip): fixed xip example

examples/system/.build-test-rules.yml

@@ -305,7 +305,3 @@ examples/system/xip_from_psram:
   disable:
     - if: IDF_TARGET == "esp32"
       reason: target esp32 doesn't support this feature.
-  disable_test:
-    - if: IDF_TARGET == "esp32s31"
-      temporary: true
-      reason: cannot pass # TODO: IDF-15526

examples/system/xip_from_psram/main/xip_from_psram_example_main.c

@@ -14,7 +14,7 @@
 #include "esp_flash.h"
 #include "esp_timer.h"
 
-#if CONFIG_IDF_TARGET_ESP32C5 || CONFIG_IDF_TARGET_ESP32C61
+#if CONFIG_IDF_TARGET_ESP32C5 || CONFIG_IDF_TARGET_ESP32C61 || CONFIG_IDF_TARGET_ESP32S31
 #define EXAMPLE_TIMER_ALERT_TIME    (1 * 3 * 1000)
 #else
 #define EXAMPLE_TIMER_ALERT_TIME    (1 * 10 * 1000)
@@ -64,7 +64,7 @@ void app_main(void)
 
 static IRAM_ATTR void NOINLINE_ATTR oneshot_timer_callback(void* arg)
 {
-    bool in_psram = (bool*) arg;
+    bool in_psram = *(bool*) arg;
     time_cb_start = esp_timer_get_time();
     if (in_psram == true) {
         cb_in_psram();

examples/system/xip_from_psram/pytest_xip_from_psram.py

@@ -1,4 +1,4 @@
-# SPDX-FileCopyrightText: 2022-2025 Espressif Systems (Shanghai) CO LTD
+# SPDX-FileCopyrightText: 2022-2026 Espressif Systems (Shanghai) CO LTD
 # SPDX-License-Identifier: CC0-1.0
 import pytest
 from pytest_embedded.dut import Dut
@@ -27,6 +27,27 @@ def test_xip_from_psram_example_generic(dut: Dut) -> None:
     assert float(response_time) <= 12
 
 
+@pytest.mark.generic
+@pytest.mark.parametrize(
+    'config',
+    [
+        'generic',
+    ],
+    indirect=True,
+)
+@idf_parametrize('target', ['esp32s31'], indirect=['target'])
+def test_xip_from_psram_example_s31(dut: Dut) -> None:
+    dut.expect_exact('found partition')
+
+    res = dut.expect(r'callback\(in PSRAM\) response time: (\d{1,3}) us')
+    response_time = res.group(1).decode('utf8')
+    assert float(response_time) <= 5
+
+    res = dut.expect(r'callback\(in IRAM\) response time: (\d{1,3}) us')
+    response_time = res.group(1).decode('utf8')
+    assert float(response_time) <= 5
+
+
 @pytest.mark.MSPI_F4R8
 @pytest.mark.parametrize(
     'config',