the conflict between NDK scheduling and the receiving data of the uart`s hwi

llTimerTick() in the NDK every 100 ms. llTimerTick()  is called for INT4 of hwi? 

Hi,

Thanks for your post.

Usually, the llTimerTick() function is supposed to run every 100 milliseconds and in general, if the network scheduler is in interrupt mode, the PRD function llTimerTick() would be executed, yes since the PRD is driving the stack like polling the driver to see if it has any actions to perform.  It also drives timeouts in the protocols (e.g. TCP).

Please ensure the PRD object llTimerTick() is defined in the project target configuration file (*.tcf) and kindly check the project configuration settings.

Thanks & regards,

Sivaraj K

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Hi Sivaraj Kuppuraj,

     We are running SYS/BIOS with NDK on our production board. Our current software versions:

Processor TMS320C6748
Code Composer Version: 6.0.1.00040
Compiler TI v5.1.6
SYS/BIOS 6.40.2.27
XDCTools 3.30.3.47_core
NDK 2.24.0.11

I add llTimerTick() in my main NDK thread. But the conflict still happened.This code like this:

int NetworkMain()
{
    HANDLE   hCfg;
    int      rc;
    uint     tmp;

    CI_IPNET NA;
    CI_ROUTE RT;
    ti_sysbios_knl_Clock_Params clockParams;

      /* Create the NDK heart beat */

      ti_sysbios_knl_Clock_Params_init(&clockParams);

      clockParams.startFlag = TRUE;

      clockParams.period = 100;

      ti_sysbios_knl_Clock_create(&llTimerTick, clockParams.period, &clockParams, NULL);

    Semaphore_pend(semI2ENT,BIOS_WAIT_FOREVER);//+++
    memcpy(bMacAddr,Macbuf,6);   // MAC //+++

    rc = NC_SystemOpen( NC_PRIORITY_LOW, NC_OPMODE_INTERRUPT );
    //rc = NC_SystemOpen( NC_PRIORITY_HIGH, NC_OPMODE_INTERRUPT );
//    rc = NC_SystemOpen( NC_PRIORITY_LOW, NC_OPMODE_POLLING );

    if( rc )
    {
        printf("NC_SystemOpen Failed (%d)\n",rc);
        for(;;);
    }

    // Create a new configuration
    hCfg = CfgNew();
    if( !hCfg )
    {
        printf("Unable to open configuration\n");
        goto main_exit;
    }

    // Manually configure our local IP address
    bzero( &NA, sizeof(NA) );
    NA.IPAddr = L_ipAddr;//+++
    NA.IPMask = L_netMask;//+++
    strcpy( NA.Domain, DomainName );
    NA.NetType = 0;
    // Add the address to interface 1
    CfgAddEntry( hCfg, CFGTAG_IPNET, 1, 0, sizeof(CI_IPNET), (UINT8 *)&NA, 0 );

    // Add our hostname
    CfgAddEntry( hCfg, CFGTAG_SYSINFO, CFGITEM_DHCP_HOSTNAME, 0, strlen(HostName), (UINT8 *)HostName, 0 );
    // Add the default gateway. Since it is the default, the
    // destination address and mask are both zero (we go ahead
    // and show the assignment for clarity).
    bzero( &RT, sizeof(RT) );
    RT.IPDestAddr = 0;
    RT.IPDestMask = 0;
    RT.IPGateAddr = L_gwAddr;//+++
    // Add the route
    CfgAddEntry( hCfg, CFGTAG_ROUTE, 0, 0, sizeof(CI_ROUTE), (UINT8 *)&RT, 0 );

    // We don't want to see debug messages less than WARNINGS
    tmp = DBG_WARN;
    CfgAddEntry( hCfg, CFGTAG_OS, CFGITEM_OS_DBGPRINTLEVEL,
                 CFG_ADDMODE_UNIQUE, sizeof(uint), (UINT8 *)&tmp, 0 );

    // Save the configuration to a linear buffer
    MainConfigSize = 0;
    CfgSave( hCfg, &MainConfigSize, 0 );
    printf("%d bytes required for save\n",MainConfigSize);
    if( MainConfigSize > sizeof( MainConfig ) )
        printf("FATAL: Config buffer too small\n");
    else
    {
        CfgSave( hCfg, &MainConfigSize, MainConfig );
        CfgFree( hCfg );

        //Semaphore_pend(semI2ENT,BIOS_WAIT_FOREVER);
        // Now call what would really be the "boot" function
        NetBoot();
    }

    // Close the OS
main_exit:
    NC_SystemClose();
    return(0);
}