mirror of
https://github.com/pvvx/RTL00_WEB.git
synced 2024-11-29 17:50:32 +00:00
28 lines
No EOL
1,019 B
Text
28 lines
No EOL
1,019 B
Text
LWIP BROADCAST EXAMPLE
|
|
|
|
Description:
|
|
Listen broadcast message on port 49152.
|
|
Send packet with the content of received packet to broadcast address.
|
|
|
|
Configuration:
|
|
[lwipopts.h]
|
|
#define LWIP_UDP 1
|
|
[platform_opts.h]
|
|
#define CONFIG_EXAMPLE_BCAST 1
|
|
|
|
Execution:
|
|
Can make automatical Wi-Fi connection when booting by using wlan fast connect example.
|
|
A broadcast example thread will be started automatically when booting.
|
|
|
|
Test:
|
|
1. Prepare a NB and connect to the same AP Ameba connected.
|
|
2. NB: iperf -c 192.168.1.255 -t 60 -i 1 -p 49152 -u
|
|
3. The recv/send messages should be printed out on Ameba console.
|
|
4. Use sniffer to make sure the packets send from Ameba are broadcast messages.
|
|
|
|
Note:
|
|
If you encounter some message like:
|
|
ERROR: sendto broadcast
|
|
[Driver]: skb_unavailable=1 in last 2 seconds
|
|
It means that the skb buffer is not enough for the massive UDP packets to be sent.
|
|
If you want to prevent the error you can add some delay time between sending packets or enlarge the skb buffer configuration. |