Patch to enable external antenna on the XIAO-ESP32-C6

external-antenna.patch

diff --git a/examples/openthread/ot_rcp/main/esp_ot_rcp.c b/examples/openthread/ot_rcp/main/esp_ot_rcp.c
index 765fef58a2..bf97db1c77 100644
--- a/examples/openthread/ot_rcp/main/esp_ot_rcp.c
+++ b/examples/openthread/ot_rcp/main/esp_ot_rcp.c
@@ -31,10 +31,25 @@

 #define TAG "ot_esp_rcp"

+#include "driver/gpio.h"
+#include "freertos/FreeRTOS.h"
+#include "freertos/task.h"
+
+static void xiao_select_external_antenna(void)
+{
+    gpio_set_direction(GPIO_NUM_3, GPIO_MODE_OUTPUT);
+    gpio_set_level(GPIO_NUM_3, 0);
+    vTaskDelay(pdMS_TO_TICKS(100));
+    gpio_set_direction(GPIO_NUM_14, GPIO_MODE_OUTPUT);
+    gpio_set_level(GPIO_NUM_14, 1);
+}
+
 extern void otAppNcpInit(otInstance *instance);

 void app_main(void)
 {
+    xiao_select_external_antenna();
+
     // Used eventfds:
     // * ot task queue
     // * radio driver
@@ -57,4 +72,4 @@ void app_main(void)
     };

     ESP_ERROR_CHECK(esp_openthread_start(&config));
-}
+}