topic Re: FNET Change Static IP in Kinetis Microcontrollers

FNET Change Static IP

pcpro178 — Wed, 12 Dec 2018 22:13:01 GMT

My application uses a static IP address, but it needs the ability to change the IP address and subnet mask through software. Is there a way to do this without modifying the FNET stack?

Re: FNET Change Static IP

danielchen — Tue, 18 Dec 2018 06:34:45 GMT

Hi Jim:

According to Fnet Quick start:

You are able to change the default network pararmeters

By using Shell commands:
```
set address <default-if IPv4 address>
```

set gateway <default-if IPv4 gateway address>

set netmask <default-if IPv4 netmask address>

By changing the default values in the fapp_user_config.h source file.
Your local system administrator is able to assign a unique IPv4 address for the board, and also provide you with the IPv4 addresses of the gateway and the netmask.

Regards

Daniel

Re: FNET Change Static IP

pcpro178 — Thu, 20 Dec 2018 22:01:48 GMT

I found that I could set the IP addresses during run-time using `fnet_netif_set_ip4_addr` and `fnet_netif_set_ip4_gateway`. I mapped some memory space in flash to store the addresses while powered-down, and my application restores them using those two API calls at power-up.