I can connect the board to the Pi and ping it with a globally valid IPv6.
When trying to connect with the MQTT broker, however, no package is sent from the Chip to the Pi.
After many tests in debugging mode I found out, which probably prevents sending the package:
(mqtt_transport_lwip.c: line 297)
err_t err = tcp_connect((struct tcp_pcb *)p_client->tcp_id, (ip_addr_t *)&p_client->broker_addr, p_client->broker_port, tcp_connection_callback);
The function returns "FFFFFFFC"
If my researches are correct, then this means that the nRF52 first requires a RouterAdvertisementMessage from a globally valid IPv6 address, which it does not receive according to my Wireshark analysis.
If so, how can I get the BT0 interface on the Pi, to do that? It only transmits with the link local IPv6 though it also has a global one.
Or am I completely on the wrong track?
Here my radvd.conf:
interface eth0
{
AdvSendAdvert on;
prefix fd00:b::/64
{
AdvOnLink on;
AdvAutonomous on;
AdvRouterAddr on;
};
route ::/0
{
};
};
interface bt0
{
AdvSendAdvert on;
prefix fd00:a::/64
{
AdvOnLink off;
AdvAutonomous on;
AdvRouterAddr on;
};
};
I'm running the "iot_mqtt_lwip_subscriber"-example from the SDK15 on nRF52840
I followed the instructions on this two pages, to configure the Raspberry:
