enet_io: Ethernet connection doesn't work with static IP

Alex Farber38

Intellectual 360 points

Other Parts Discussed in Thread: EK-TM4C1294XL

My working environment:

Code Composer Studio Version: 6.1.3.00034
TivaWare_C_Series-2.1.3.156
Board: EK-TM4C129XL Rev D
Windows 10 x64

Code sample: enet_io, path C:\ti\TivaWare_C_Series-2.1.3.156\examples\boards\ek-tm4c1294xl\enet_io

When I execute this code sample, I see the following information in debug UART output:

Waiting for IP.
Waiting for link.
Waiting for IP address.
IP Address: 169.254.104.26 // connects after 40 seconds, OK

To use static IP, I make the following change in the code:

//    lwIPInit(g_ui32SysClock, pui8MACArray, 0, 0, 0, IPADDR_USE_DHCP);
    lwIPInit(g_ui32SysClock, pui8MACArray, 0xC0A80A01, 0xFFFFFF00, 0, IPADDR_USE_STATIC);   // // 192.168.10.1

PC network adapter is set to static IP 192.168.10.200, subnet mask 255.255.255.0

UART output:

Waiting for IP.
Waiting for link.
Waiting for IP address.

The board never connects. So, DHCP is working, and static IP doesn't work.

Code sample: enet_lwip doesn't work at all, both in DHCP and static IP.

For reference: old EK-LM3S9B92 board with enet_lwip code sample from Stellaris development kip works properly on the same computer, both with DHCP and static IP.

over 9 years ago

0 QJ Wang over 9 years ago

TI__Guru**** 192486 points

Hello,

0xC0A80A01 used in lwipinit() is not the IP address you mentioned: IP 192.168.10.200

Yo also need the gateway address for lwipinit() function.

regards,

0 Mile Atanasovski over 9 years ago

Prodigy 70 points

hi Alex,
first you have to set in lwipopts.h (- Configuration file for lwIP)

in DHCP section
#define LWIP_DHCP 0

in AUTOIP section
#define LWIP_AUTOIP 0

then in your enet_io you should define the static ip,netmask,and gateway,

//*****************************************************************************
//
//Definiranje IP addr, SUBNET , Gateway za staticki IP, ako e dinamicki so DHCP Ne se koristat
//
//*****************************************************************************
#define IP_ADDR0 192
#define IP_ADDR1 168
#define IP_ADDR2 1
#define IP_ADDR3 3
/* Set Netmask */
#define NET_MASK0 255
#define NET_MASK1 255
#define NET_MASK2 255
#define NET_MASK3 0
/* Set IP Gateway */
#define IP_GW0 192
#define IP_GW1 168
#define IP_GW2 1
#define IP_GW3 1

-- in main()

uint32_t ui32IPaddr,ui32NetMask,ui32GW,i;

/* IP address */
ui32IPaddr=((uint32_t)((IP_ADDR0) & 0xff) << 24) |
((uint32_t)((IP_ADDR1) & 0xff) << 16) |
((uint32_t)((IP_ADDR2) & 0xff) << 8) |
(uint32_t)((IP_ADDR3) & 0xff);
ui32NetMask=((uint32_t)((NET_MASK0) & 0xff) << 24) |
((uint32_t)((NET_MASK1) & 0xff) << 16) |
((uint32_t)((NET_MASK2) & 0xff) << 8) |
(uint32_t)((NET_MASK3) & 0xff);
ui32GW=((uint32_t)((IP_GW0) & 0xff) << 24) |
((uint32_t)((IP_GW1) & 0xff) << 16) |
((uint32_t)((IP_GW2) & 0xff) << 8) |
(uint32_t)((IP_GW3) & 0xff);

then you should call

lwIPInit(g_ui32SysClock, pui8MACArray,ui32IPaddr,ui32NetMask, ui32GW,IPADDR_USE_STATIC);

I think that will help you.

regards

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enet_io: Ethernet connection doesn't work with static IP