From c9684af5c20d63d5b497381ff5e49ed9fbb734d5 Mon Sep 17 00:00:00 2001
From: Gunar Schorcht <gunar@schorcht.net>
Date: Sun, 13 Jan 2019 17:36:09 +0100
Subject: [PATCH] cpu/esp32: automatic reconnect after disconnect
If WiFi is disconnected, e.g., because of timeout for beacon frame, it is tried to reconnect automatically.
---
cpu/esp32/esp-wifi/esp_wifi_netdev.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)
diff --git a/cpu/esp32/esp-wifi/esp_wifi_netdev.c b/cpu/esp32/esp-wifi/esp_wifi_netdev.c
index 8516cab0cd..46619f4ae5 100644
--- a/cpu/esp32/esp-wifi/esp_wifi_netdev.c
+++ b/cpu/esp32/esp-wifi/esp_wifi_netdev.c
@@ -144,6 +144,21 @@ static esp_err_t IRAM_ATTR _esp_system_event_handler(void *ctx, system_event_t *
_esp_wifi_dev.event = SYSTEM_EVENT_ETH_DISCONNECTED;
_esp_wifi_dev.netdev.event_callback(&_esp_wifi_dev.netdev, NETDEV_EVENT_ISR);
+ /* call disconnect to reset internal state */
+ result = esp_wifi_disconnect();
+ if (result != ESP_OK) {
+ LOG_TAG_ERROR("esp_wifi", "esp_wifi_disconnect failed with "
+ "return value %d\n", result);
+ return result;
+ }
+
+ /* try to reconnect */
+ result = esp_wifi_connect();
+ if (result != ESP_OK) {
+ LOG_TAG_ERROR("esp_wifi", "esp_wifi_connect failed with "
+ "return value %d\n", result);
+ }
+
break;
default:
@@ -313,6 +328,7 @@ static int _esp_wifi_send(netdev_t *netdev, const iolist_t *iolist)
}
mutex_unlock(&dev->dev_lock);
+
return ret;
}
--
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