SPNA248 March   2021 TM4C1292NCPDT , TM4C1292NCPDT , TM4C1292NCZAD , TM4C1292NCZAD , TM4C1294KCPDT , TM4C1294KCPDT , TM4C1294NCPDT , TM4C1294NCPDT , TM4C1294NCZAD , TM4C1294NCZAD , TM4C1299KCZAD , TM4C1299KCZAD , TM4C1299NCZAD , TM4C1299NCZAD , TM4C129DNCPDT , TM4C129DNCPDT , TM4C129DNCZAD , TM4C129DNCZAD , TM4C129EKCPDT , TM4C129EKCPDT , TM4C129ENCPDT , TM4C129ENCPDT , TM4C129ENCZAD , TM4C129ENCZAD , TM4C129LNCZAD , TM4C129LNCZAD , TM4C129XKCZAD , TM4C129XKCZAD , TM4C129XNCZAD , TM4C129XNCZAD

 

  1.   Trademarks
  2. 1 Introduction
    1. 1.1 License
    2. 1.2 IwIP Version
    3. 1.3 lwIP Customization
    4. 1.4 IwIP API
      1. 1.4.1 TCP RAW APIs
      2. 1.4.2 UDP RAW APIs
    5. 1.5 lwIP Development Home Page and Support
  3. 2 Application Examples
  4. 3 Application Setup
    1. 3.1 Hardware Setup
    2. 3.2 Software Tools
  5. 4 Download and Import the Ethernet examples
  6. 5 Enet_tcpecho_server_lwip Example Overview
    1. 5.1 Build and Flash the Program
    2. 5.2 Check and Program the MAC Address
      1. 5.2.1 Using The LM Flash Programmer
      2. 5.2.2 Using the CCS
      3. 5.2.3 Using Uniflash
    3. 5.3 Configure the Terminal Window
    4. 5.4 Run the enet_tcpecho_server_lwip Example
  7. 6 Enet_tcpecho_server_static_ip_lwip Example Overview
    1. 6.1 How to Configure lwIP for Static Address
    2. 6.2 Run the enet_tcpecho_server_static_ip_lwip Example
  8. 7 Enet_udpecho_server_lwip Example Overview
    1. 7.1 Run the enet_udpecho_server_lwip Example
  9. 8 Enet_dns_lwip Example Overview
    1. 8.1 How to Configure lwIP for DNS
    2. 8.2 How to View the DNS Traffic on Wireshark
    3. 8.3 Run the enet_dns_lwip Example
  10. 9 Enet_sntp_lwip Example Overview
    1. 9.1 Run the enet_sntp_lwip Example
  11. 10Enet_tcpecho_client_lwip Example Overview
    1. 10.1 Configure the Server IP Address
    2. 10.2 Configure the SocketTest Server and Run the enet_tcpecho_client_lwip Example
    3. 10.3 Wireshark Capture for enet_tcpecho_client_lwip Example
  12. 11Enet_adcsensor_client_lwip Example Overview
    1. 11.1 Run the adcsensor_client_lwip Example
  13. 12Enet_udpecho_client_lwip Example Overview
    1. 12.1 Run the enet_udpecho_client_lwip Example
  14. 13References

5.2 Check and Program the MAC Address

Every Network Interface Controller (NIC) on the network must be uniquely identified by a MAC address for communications within a network segment. A MAC address is a 48-bit value represented as six octets of two hexadecimal digits. MAC addresses are primarily assigned by device manufactures. The first three octets are the Organizationally Unique Identifier (OUI). The MAC address is normally pre-programmed on the EK-TM4C1294XL LaunchPad board. There is also a sticker on the back of the LaunchPad with the written MAC address. The pre-programmed MAC addresses will have the first three octets equal to 00:1A:B6 which uniquely identifies Texas Instruments. If you have a virgin device then the MAC address is not pre-programmed. You must program the MAC address yourself with the addresses that are allocated to your organization.

There are three tools to read and program the MAC address.