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RM48L952: RM48L952

immanuel raja
Intellectual 280 points
Part Number: RM48L952
Other Parts Discussed in Thread: DP83640

Hi,

 

I have Lwip driver, how to make use of it for tcp/ip?

 Can you please share me the demo application code for tcp/ip.

 

Regards,

Immanuel

  • 0
    TI__Guru**** 196736 points
    Hello Immanuel,

    Here is the link to download the LWIP demo project for Hercules MCU:

    processors.wiki.ti.com/.../HALCoGen_Ethernet_Driver_and_lwIP_Integration_Demonstration
  • 0 in reply to QJ Wang
    Intellectual 280 points

    Hi Wang,

    Thanks for your reply.

    I have downloaded that already. but  need a demo code for using TCP/IP in that driver code.

    Regards,

    Immanuel

  • 0 in reply to immanuel raja
    TI__Guru**** 196736 points
    Hello Immanuel,

    LWIP is a TCP/IP stack. This demo is HTTP server (Ethernet application).
  • 0 in reply to QJ Wang
    Intellectual 280 points
    Hi Wang,

    I don't want to use http server in my application, how can I use it for TCP/IP or UDP.

    Regards,
    Immanuel
  • 0 in reply to immanuel raja
    TI__Guru**** 196736 points
    hello Immanuel,

    We don'y have this kind of examples, for example tcp echo server demo.
  • 0 in reply to QJ Wang
    Intellectual 280 points

    Hi Wang,

    we are not getting any clue for it.Please give your suggestions for the implementation of UDP communication using this lwip driver.

    Regards,
    Immanuel

  • 0 in reply to immanuel raja
    TI__Guru**** 196736 points
    Hello Immanuel,

    I posted an simple example for using LWIP UDP.
  • 0 in reply to QJ Wang
    Intellectual 280 points
    Hello Wang.

    The UDP code whatever you have given is showing many errors, the NETCONUDP macro is disabled. If I enable its showing lot of errors in the driver functions.

    Can you please send the UDP working example.

    Regards,
    immanuel
  • 0 in reply to immanuel raja
    TI__Guru**** 196736 points
    Hi immanuel,

    I don't have a working UDP example. You need include the following header files:
    #include "lwip/udp.h"
    #include "lwip/ip_addr.h"
  • 0 in reply to QJ Wang
    Intellectual 280 points

    Hi Wang,

    The Functions 

    EMAC_LwIP_Main(emacAddress);; is making many server configurations.

    we have included the header as you mentioned.

    int main()

    {

    struct pbuf *Tx;
    uint16_t length=0;
    char msg[5],error,pcb;

    _enable_IRQ();
    EMAC_LwIP_Main(emacAddress);
    IP4_ADDR(&src, 162, 192, 37, 29);
    IP4_ADDR(&dst, 162, 192, 37, 28);
    IP4_ADDR(&snet, 255, 255, 255, 0);
    IP4_ADDR(&nnet, 0, 0, 0, 0);
    pcb=udp_new();

    error=udp_bind(pcb,&src,6031);
    error=udp_connect(pcb,&dst,49668);
    length = 5;
    Tx=pbuf_alloc(PBUF_TRANSPORT,length, PBUF_RAM);
    Tx->next=0;
    Tx->len=Tx->tot_len=length;
    memcpy (Tx->payload, msg, Tx->len);
    udp_sendto(pcb, Tx, &dst, 49668);
    pbuf_free(Tx);

    }

    void EMAC_LwIP_Main (uint8_t * macAddress)
    {
    unsigned int ipAddr;
    uint8_t testChar;
    struct in_addr devIPAddress;

    //iommUnlock();
    //iommMuxEnableMdio();
    //iommMuxEnableMii();
    //iommLock();
    sciInit();

    /* Enable the interrupt generation in CPSR register */
    IntMasterIRQEnable();
    _enable_FIQ();

    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));
    sciDisplayText(scilinREG, txtTitle, sizeof(txtTitle));
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));
    sciDisplayText(scilinREG, txtTI, sizeof(txtTI));
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));
    #ifdef __little_endian__
    sciDisplayText(scilinREG, txtLittleEndian, sizeof(txtLittleEndian));
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));
    #else
    sciDisplayText(scilinREG, txtBigEndian, sizeof(txtBigEndian));
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));
    #endif

    /* Initialze the lwIP library, using DHCP.*/
    sciDisplayText(scilinREG, txtEnetInit, sizeof(txtEnetInit));
    ipAddr = lwIPInit(0, macAddress,0xA2C0251C,0xFFFF0000, 0, IPADDR_USE_STATIC);
    sciDisplayText(scilinREG, (uint8_t*)"..DONE", sizeof("..DONE"));
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));

    if (0 == ipAddr) {

    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));
    sciDisplayText(scilinREG, txtErrorInit, sizeof(txtErrorInit));
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));
    } else {
    /* Convert IP Address to string */
    devIPAddress.s_addr = ipAddr;
    txtIPAddrItoA = (uint8_t *)inet_ntoa(devIPAddress);
    LocatorConfig(macAddress, "HDK enet_lwip");

    /* Initialize the sample httpd server. */
    sciDisplayText(scilinREG, (uint8_t*)"Starting Web Server", sizeof("Starting Web Server"));
    httpd_init();
    sciDisplayText(scilinREG, (uint8_t*)"..DONE", sizeof("..DONE"));
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));

    /* Loop forever. All the work is done in interrupt handlers. */
    //while(1)
    {
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));

    sciDisplayText(scilinREG, txtTitle, sizeof(txtTitle));
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));

    sciDisplayText(scilinREG, txtTI, sizeof(txtTI));
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));
    #ifdef __little_endian__
    sciDisplayText(scilinREG, txtLittleEndian, sizeof(txtLittleEndian));
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));
    #else
    sciDisplayText(scilinREG, txtBigEndian, sizeof(txtBigEndian));
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));
    #endif
    sciDisplayText(scilinREG, txtIPAddrTxt, sizeof(txtIPAddrTxt));
    sciDisplayText(scilinREG, txtIPAddrItoA, 16);
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));

    sciDisplayText(scilinREG, txtNote1, sizeof(txtNote1));
    sciDisplayText(scilinREG, txtIPAddrItoA, 16);
    sciDisplayText(scilinREG, txtCRLF, sizeof(txtCRLF));


    /* Before printing the next set, wait for a character on the terminal */
    // sciReceive(scilinREG, 1, &testChar);
    }
    }
    }

    The UDP is not working . The DP83640 is generating ARP with both src and dst IP as same address.

    we are not getting any idea about it,kindly give your suggestions.

    Regards,

    Immanuel

  • 0 in reply to immanuel raja
    TI__Guru**** 196736 points

    Hello, 

    My comments are in blue:

    int main()

    {

    extern unsigned int len,Tot_len;

    struct udp_pcb *pcb;

    struct ip_addr ipaddr, netmask, gw,Src,Dst;

    struct pbuf *Tx;
    uint16_t length=0;
    char msg[5],error,pcb;

    _enable_IRQ();
    EMAC_LwIP_Main(emacAddress);

    //The IP address should be the IP address of your boards
    IP4_ADDR(&src, 162, 192, 37, 29);
    IP4_ADDR(&dst, 162, 192, 37, 28);
    IP4_ADDR(&snet, 255, 255, 255, 0);
    IP4_ADDR(&nnet, 0, 0, 0, 0);

    //This is for gatway

    IP4_ADDR(&gw, 192, 168,   0, 1);


    pcb=udp_new();

    //are those numbers valid for you?

    error=udp_bind(pcb,&src,6031);
    error=udp_connect(pcb,&dst,49668);   //not a valid number for UDP
    length = 5;
    Tx=pbuf_alloc(PBUF_TRANSPORT,length, PBUF_RAM);
    Tx->next=0;
    Tx->len=Tx->tot_len=length;
    memcpy (Tx->payload, msg, Tx->len);
    udp_sendto(pcb, Tx, &dst, 49668); //not a valid number for UDP
    pbuf_free(Tx);

    }

  • 0 in reply to QJ Wang
    Intellectual 280 points
    Hello,


    int main()
    {
    extern unsigned int len,Tot_len;
    struct udp_pcb *pcb;
    struct ip_addr ipaddr, netmask, gw,Src,Dst;
    struct pbuf *Tx;
    uint16_t length=0;
    char msg[5],error,pcb;
    _enable_IRQ();

    EMAC_LwIP_Main(emacAddress);// what this fuction is doing many configuration is it mandatory to do all inside


    //The IP address should be the IP address of your boards ---Source and destination both should be board's??
    IP4_ADDR(&src, 162, 192, 37, 29);
    IP4_ADDR(&dst, 162, 192, 37, 28);
    IP4_ADDR(&snet, 255, 255, 255, 0);
    IP4_ADDR(&nnet, 0, 0, 0, 0);
    //This is for gatway
    IP4_ADDR(&gw, 192, 168, 0, 1); // The PC IP??

    pcb=udp_new();

    //are those numbers valid for you?-- That's the number the PC is generating
    error=udp_bind(pcb,&src,6031);
    error=udp_connect(pcb,&dst,49668); //not a valid number for UDP
    length = 5;
    Tx=pbuf_alloc(PBUF_TRANSPORT,length, PBUF_RAM);
    Tx->next=0;
    Tx->len=Tx->tot_len=length;
    memcpy (Tx->payload, msg, Tx->len);
    udp_sendto(pcb, Tx, &dst, 49668); //not a valid number for UDP
    pbuf_free(Tx);
    }
  • 0 in reply to immanuel raja
    TI__Guru**** 196736 points
    I think that 49668 is out of the range of UDP port number. The maximum is 49151.

    en.wikipedia.org/.../List_of_TCP_and_UDP_port_numbers
  • 0 in reply to QJ Wang
    Intellectual 280 points
    Hi Wang,

    EMAC_LwIP_Main(emacAddress);// what this fuction is doing many configuration.Is it mandatory to do all inside

    Source and destination both should be board's??
    IP4_ADDR(&src, 162, 192, 37, 29);
    IP4_ADDR(&dst, 162, 192, 37, 28);
    IP4_ADDR(&snet, 255, 255, 255, 0);
    IP4_ADDR(&nnet, 0, 0, 0, 0);
    //This is for gatway
    IP4_ADDR(&gw, 192, 168, 0, 1); // This should be PC IP??

    Kindly give yours suggestions.

    Regards,
    Immanuel
  • 0 in reply to immanuel raja
    TI__Guru**** 196736 points
    Hello,

    Below is a link to some udp example.
    www.ultimaserial.com/avr_lwip_udp.html