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WHAT'S NEW
Simplifying Authenticated Cloud Connectivity for Any Device.
How Wi-Fi and Cellular connectivity modules with ExpressLink can help create secure cloud connected devices. See the blog post.
Designing an energy efficient and cloud-connected IoT solution with CoAP.
A client/server, request/response, UDP-based protocol for efficiency and cloud compatibility. See the blog post.
Introducing FreeRTOS Kernel version 11.0.0:
A Major Release with Symmetric Multiprocessing (SMP) Support. See the blog post.
FreeRTOS Roadmap and Code Contribution process.
The FreeRTOS roadmap and code contribution process are now published here and on GitHub. See the blog post.
OPC-UA over TSN with FreeRTOS.
A development project to give applications consistent access to hardware TSN capabilities. See the blog post.

RA

RA stands for Router Advertisement.

Router Advertisement is a part of IPv6 Neighbour Discovery protocol. Routers periodically send multicast messages to inform devices about their presence and network configuration. RA allows dynamic address configuration, making it easier for devices to connect to the network.

If ipconfigUSE_RA is set to 1 in FreeRTOSIPConfig.h and if the bWantRA bit in the bits field of the endpoint structure is set during the endpoint initialisation, then FreeRTOS-Plus-TCP will attempt to obtain the endpoint's IP address using Router advertisement.

Below is an example endpoint initialisation that enables RA: 

IPv6_Address_t xIPAddress;

IPv6_Address_t xPrefix;

IPv6_Address_t xGateWay;

IPv6_Address_t xDNSServer1, xDNSServer2;



FreeRTOS_inet_pton6( "2001:470:ed44::", xPrefix.ucBytes );



FreeRTOS_CreateIPv6Address( &xIPAddress, &xPrefix, 64, pdTRUE );

FreeRTOS_inet_pton6( "fe80::ba27:ebff:fe5a:d751", xGateWay.ucBytes );



FreeRTOS_FillEndPoint_IPv6( &( xInterfaces[ 0 ] ),

                               &( xEndPoints[ xEndPointCount ] ),

                               &( xIPAddress ),

                               &( xPrefix ),

                               64uL, /* Prefix length. */

                               &( xGateWay ),

                               NULL, /* pxDNSServerAddress: Not used yet. */

                               ucMACAddress );

FreeRTOS_inet_pton6( "2001:4860:4860::8888", xEndPoints[ xEndPointCount ].ipv6_settings.xDNSServerAddresses[ 0 ].ucBytes );

FreeRTOS_inet_pton6( "fe80::1", xEndPoints[ xEndPointCount ].ipv6_settings.xDNSServerAddresses[ 1 ].ucBytes );

FreeRTOS_inet_pton6( "2001:4860:4860::8888", xEndPoints[ xEndPointCount ].ipv6_defaults.xDNSServerAddresses[ 0 ].ucBytes );

FreeRTOS_inet_pton6( "fe80::1", xEndPoints[ xEndPointCount ].ipv6_defaults.xDNSServerAddresses[ 1 ].ucBytes );



#if ( ipconfigUSE_RA != 0 )

{

     /* End-point wants to use RA. */

        xEndPoints[ xEndPointCount ].bits.**bWantRA** = pdTRUE;

}

#endif /* ( ipconfigUSE_RA != 0 ) */
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