[question] option to turn off auto-connect wifi

[chegewara]

Hi, is there option to stop auto-reconnect wifi even if wifi credentials are correct? I am using WIFI_Disconnect but before i can do something app is reconnecting to AP. Thanks.

EDIT this problem exists only when at least 1 WIFINetwork is stored in NVS with WIFI_NetworkAdd into nvs, (esp32 device)

[abhidixi11]

Hello @chegewara,

1. Which branch are you referring to? ble-beta or master?
2. Which app you are referring to ? Thanks.

[chegewara]

Hi,

1. modified ble-beta branch
2. this app should be enough to reproduce this issue https://github.com/chegewara/esp32-AWSFreeRTOS-wifi-provisioning-demo

From awsfreertos i am using basically only main.c, without apps from DEMO_RUNNER_RunDemos

Thanks.

[abhidixi11]

Hello @chegewara, Thanks for quick response. I didn't see the edit earlier about WIFI_NetworkAdd(). We will look into it when we get a chance, since ble-beta is still in 'beta' and we are actively working on it, it may take some time, due to other priorities. We will update once we find more information. Thanks.

[chegewara]

Thanks, i can try to test against master and see if this problem exists in master too if this will help.

[abhidixi11]

Hello @chegewara, Yes, if you can verify it, it will be great. Thanks!

[chegewara]

Sorry, but it cant be tested against master branch. This is the reason: https://github.com/aws/amazon-freertos/blob/master/lib/wifi/portable/espressif/esp32_devkitc_esp_wrover_kit/aws_wifi.c#L530

WIFI_NetworkAdd is not implemented yet.

Also what i found is that AwsIotNetworkManager is not implemented in master, and i am guessing all connections managing when wifi credentials are stored in nvs are handled by AwsIotNetworkManager.

[abhidixi11]

Yes, that's correct. AwsIotNetworkManager is new feature in ble-beta and WIFI_NetworkAdd is the new update from ESP. We will look into it as time permits and update the the issue. Thanks for your patience!

[chegewara]

Thanks for support. Its not very urgent, because i still need some time before i deliver full app to the client.

From this log WIFI: SYSTEM_EVENT_STA_DISCONNECTED: 8 i would say that NetworkManager should not try to reconnect when disconnect reason is 8 (WIFI_REASON_ASSOC_LEAVE).

[chegewara]

Further investigations shows me that the issue is because of this task: https://github.com/aws/amazon-freertos/blob/feature/ble-beta/demos/common/wifi_provisioning/aws_wifi_connect_task.c#L79

which is also described in here: https://github.com/aws/amazon-freertos/tree/feature/ble-beta/demos/common/wifi_provisioning#provisioning-sequence

[abhidixi11]

Hello @chegewara ,

The WiFi Connect task is designed to keep WiFi connected that's why you are experiencing this behavior. You have two options:

1. Comment out the task here: https://github.com/aws/amazon-freertos/blob/feature/ble-beta/demos/common/network_manager/aws_iot_network_manager.c#L402
2. You can programmatically disable WIFI by using network manager API AwsIotNetworkManager_DisableNetwork() and providing AWSIOT_NETWORK_TYPE_WIFI as the parameter. You can turn the WIFI back on by using AwsIotNetworkManager_EnableNetwork( AWSIOT_NETWORK_TYPE_WIFI ). Let us know if you have any questions. Thanks.

[chegewara]

Thanks for help and support, i found solution for my requirements. I am using 2 variables (1 for auto-connect and 1 for auto-reconnect):

static void prvWiFiNetworkStateChangeCallback( uint32_t ulNetworkType, AwsIotNetworkState_t xNetworkState, void* pvContext )
{
    if( xNetworkState == eNetworkStateDisabled && autoReconnect )
    {
        xSemaphoreGive( xWiFiConnectLock );
    }
}

void prvWiFiConnectTask( void * pvParams )
{
    uint16_t ulNumNetworks, ulNetworkIndex;
    TickType_t xWifiConnectionDelay = pdMS_TO_TICKS( wifiConnectDELAY_SECONDS * 1000 );
    BaseType_t xWiFiConnected;

    for(;;)
    {
        if( xSemaphoreTake( xWiFiConnectLock, portMAX_DELAY ) == pdTRUE )
        {
            xWiFiConnected = pdFALSE;
            while( xWiFiConnected == pdFALSE )
            {
                ulNumNetworks = IotBleWifiProv_GetNumNetworks();
                if( ulNumNetworks > 0 && autoConnect)

Its not perfect solution but it works for now.