LP-AM243: MCU+SDK 8.5.0.24: Changing LWIP example to static IP

Alexander Baehr

Part Number: LP-AM243
Other Parts Discussed in Thread: DP83869

Hi Experts,

I am using the enet_lwip_cpsw example from MCU+SDK 08.05.00.24 on the lp-am243. It is running as expected using DHCP, but only if I disable the second netif.

However, I want to use a static IP address. So I changed

--- lwipcfg.h

#define LWIP_PORT_INIT_IPADDR(addr) IP4_ADDR((addr), 192,168,39,5)
#define LWIP_PORT_INIT_GW(addr) IP4_ADDR((addr), 192,168,39,1)
#define LWIP_PORT_INIT_NETMASK(addr) IP4_ADDR((addr), 255,255,255,0)

--- lwipopts.h

#define LWIP_DHCP 0

This used to work with the previous SDK.

However, in this case the firmware runs into a RTOS abort.

Is this a bug, or is there a different way to use a static IP address? Which documentation should I look in?

Thanks for a hint

Alexander

2063.enet_lwip_cpsw_am243x-lp_r5fss0-0_freertos_ti-arm-clang.zip

over 2 years ago

+1 Nilabh Anand over 2 years ago

TI__Mastermind 44514 points

Hi Alex,

I have few questions:

1. Do you want to use single net if or dual netif

2. If dual net if then,do you need DHCP or static ip on both netif

3. You can refer :https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1120698/faq-mcu-plus-sdk-am243x-configure-static-ip-with-mcu-sdk-enet_lwip_cpsw-or-enet_lwip_icssg-example?tisearch=e2e-sitesearch&keymatch=faq%3Atrue

Also I will check on my end to confirm the example.

0 Alexander Baehr over 2 years ago in reply to Nilabh Anand

Intellectual 616 points

Hi Nilabh,

for the moment, I want to use a single netif with static IP. With your link, it works fine.

0 Nilabh Anand over 2 years ago in reply to Alexander Baehr

TI__Mastermind 44514 points

Glad to Know. Will close this thread

0 Alexander Baehr over 2 years ago in reply to Nilabh Anand

Intellectual 616 points

Hi Nilabh,

today I tried the same with the EVM board; still the enet_lwip_cpsw example from MCU+SDK 08.05.00.24 on an old TMDS243GPEVM.

The example works fine with DHCP.

With the solution from your link, I get to the point that

- the debug output looks as expacted

- ping is working for the static

- but iperf does not get a connection.

What am I missing?

The project is attached

The debug output was:

==========================
ENET LWIP App
==========================
Enabling clocks!
Mdio_open: MDIO Manual_Mode enabled
EnetPhy_bindDriver: PHY 0: OUI:080028 Model:23 Ver:01 <-> 'dp83867' : OK
EnetPhy_bindDriver: PHY 3: OUI:080028 Model:0f Ver:01 <-> 'dp83869' : OK
PHY 0 is alive
PHY 3 is alive
Starting lwIP, local interface IP is 192.168.39.5
Host MAC address-0 : f4:84:4c:f9:84:01
Host MAC address-1 : 70:ff:76:1e:63:79
[LWIPIF_LWIP] NETIF INIT SUCCESS
[LWIPIF_LWIP] NETIF INIT SUCCESS
[LWIPIF_LWIP] Enet has been started successfully
status_callback==UP, local interface IP is 192.168.39.5
status_callback==UP, local interface IP is 192.168.39.5
UDP server listening on port 5001
Cpsw_handleLinkUp: Port 1: Link up: 1-Gbps Full-Duplex
MAC Port 1: link up
link_callback==UP
link_callback==UP
5. 69s : CPU load = 3.50 %
10. 69s : CPU load = 3.13 %
15. 69s : CPU load = 2.92 %
[...]

The command window was:

C:\DevTools\iperf-2.0.9-win64>ping 192.168.39.5

Ping wird ausgeführt für 192.168.39.5 mit 32 Bytes Daten:
Antwort von 192.168.39.5: Bytes=32 Zeit=2ms TTL=255
Antwort von 192.168.39.5: Bytes=32 Zeit=1ms TTL=255
Antwort von 192.168.39.5: Bytes=32 Zeit=1ms TTL=255
Antwort von 192.168.39.5: Bytes=32 Zeit<1ms TTL=255

Ping-Statistik für 192.168.39.5:
Pakete: Gesendet = 4, Empfangen = 4, Verloren = 0
(0% Verlust),
Ca. Zeitangaben in Millisek.:
Minimum = 0ms, Maximum = 2ms, Mittelwert = 1ms

C:\DevTools\iperf-2.0.9-win64>

C:\DevTools\iperf-2.0.9-win64>iperf -c 192.168.39.5 -i 5 -t 20 -d
------------------------------------------------------------
Server listening on TCP port 5001
TCP window size: 208 KByte (default)
------------------------------------------------------------
connect failed: Connection timed out

C:\DevTools\iperf-2.0.9-win64>

Alex

1323.enet_lwip_cpsw_am243x-evm_r5fss0-0_freertos_ti-arm-clang.zip

+1 Nilabh Anand over 2 years ago in reply to Alexander Baehr

TI__Mastermind 44514 points

Hi Alex,

Alexander Baehr said:
Host MAC address-0 : f4:84:4c:f9:84:01
Host MAC address-1 : 70:ff:76:1e:63:79
[LWIPIF_LWIP] NETIF INIT SUCCESS
[LWIPIF_LWIP] NETIF INIT SUCCESS
[LWIPIF_LWIP] Enet has been started successfully
status_callback==UP, local interface IP is 192.168.39.5
status_callback==UP, local interface IP is 192.168.39.5
UDP server listening on port 5001
Cpsw_handleLinkUp: Port 1: Link up: 1-Gbps Full-Duplex

It seems both netif have got same ip address. So it may be the issue.

Can you please follow this thread: e2e.ti.com/.../am2434-cpsw-dual-mac-mode

This will ensure that two netif gets different ip address. Then can you try and let me know if this works

0 Alexander Baehr over 2 years ago in reply to Nilabh Anand

Intellectual 616 points

Thanks for your quick help. That worked.

Alex

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LP-AM243: MCU+SDK 8.5.0.24: Changing LWIP example to static IP