ci/mdsn: Fix example test on ethernet runners

* Ethernet kit uses GPIO0 for ref-clock, so the test button hits
constantly
* Add a freeRTOS delay when checking result on assync queries


* Original commit: espressif/esp-idf@afe7ab3b2c

examples/protocols/mdns/main/Kconfig.projbuild

@@ -1,5 +1,12 @@
 menu "Example Configuration"
 
+    config MDNS_GPIO_RANGE_MAX
+        int
+        default 33 if IDF_TARGET_ESP32
+        default 46 if IDF_TARGET_ESP32S2
+        default 19 if IDF_TARGET_ESP32C3
+        default 48 if IDF_TARGET_ESP32S3
+
     config MDNS_HOSTNAME
         string "mDNS Hostname"
         default "esp32-mdns"
@@ -34,4 +41,11 @@ menu "Example Configuration"
             If enabled, a portion of MAC address is added to the hostname, this is used
             for evaluation of tests in CI
 
+    config MDNS_BUTTON_GPIO
+        int "Button GPIO to trigger querries"
+        range 0 MDNS_GPIO_RANGE_MAX
+        default 0
+        help
+            Set the GPIO number used as mDNS test button
+
 endmenu

examples/protocols/mdns/main/mdns_example_main.c

@@ -22,7 +22,7 @@
 
 
 #define EXAMPLE_MDNS_INSTANCE CONFIG_MDNS_INSTANCE
-#define EXAMPLE_BUTTON_GPIO     0
+#define EXAMPLE_BUTTON_GPIO   CONFIG_MDNS_BUTTON_GPIO
 
 static const char * TAG = "mdns-test";
 static char * generate_hostname(void);
@@ -174,7 +174,6 @@ static void query_mdns_hosts_async(const char * host_name)
     ESP_LOGI(TAG, "Query both A and AAA: %s.local", host_name);
 
     mdns_search_once_t *s_a = mdns_query_async_new(host_name, NULL, NULL, MDNS_TYPE_A, 1000, 1, NULL);
-    mdns_query_async_delete(s_a);
     mdns_search_once_t *s_aaaa = mdns_query_async_new(host_name, NULL, NULL, MDNS_TYPE_AAAA, 1000, 1, NULL);
     while (s_a || s_aaaa) {
         if (s_a && check_and_print_result(s_a)) {
@@ -187,6 +186,7 @@ static void query_mdns_hosts_async(const char * host_name)
             mdns_query_async_delete(s_aaaa);
             s_aaaa = NULL;
         }
+        vTaskDelay(50 / portTICK_PERIOD_MS);
     }
 }
 

examples/protocols/mdns/mdns_example_test.py

@@ -114,7 +114,7 @@ def test_examples_protocol_mdns(env, extra_data):
       3. check the mdns name is accessible
       4. check DUT output if mdns advertized host is resolved
     """
-    dut1 = env.get_dut('mdns-test', 'examples/protocols/mdns', dut_class=ttfw_idf.ESP32DUT)
+    dut1 = env.get_dut('mdns-test', 'examples/protocols/mdns', dut_class=ttfw_idf.ESP32DUT, app_config_name='eth_kit')
     # check and log bin size
     binary_file = os.path.join(dut1.app.binary_path, 'mdns_test.bin')
     bin_size = os.path.getsize(binary_file)

examples/protocols/mdns/sdkconfig.ci.eth_kit

@@ -1,3 +1,4 @@
+CONFIG_IDF_TARGET="esp32"
 CONFIG_MDNS_RESOLVE_TEST_SERVICES=y
 CONFIG_MDNS_ADD_MAC_TO_HOSTNAME=y
 CONFIG_MDNS_PUBLISH_DELEGATE_HOST=y
@@ -11,3 +12,4 @@ CONFIG_EXAMPLE_ETH_MDIO_GPIO=18
 CONFIG_EXAMPLE_ETH_PHY_RST_GPIO=5
 CONFIG_EXAMPLE_ETH_PHY_ADDR=1
 CONFIG_EXAMPLE_CONNECT_IPV6=y
+CONFIG_MDNS_BUTTON_GPIO=32