MSP432E401Y: telnet功能如何启用

你好，为了更好的解决您的问题，我将咨询TI相关资深工程师，一旦有回复会立即回复您。

Hi Ben,

How can I get the telnet callback function? Is there any demo?

Thanks

下面是工程师的回复：

If you mean the service report callback, I just tweaked the one from the other TCP demos:

/** @brief Service report callback.
 *
 * May be set as the callback for various network config operation that are defined in the GUI.
 */
void serviceReport(uint32_t item, uint32_t status, uint32_t report, void *h)
{
  static char *taskName[] = {"Telnet", "", "NAT", "DHCPS", "DHCPC", "DNS"};
  static char *reportStr[] = {"", "Running", "Updated", "Complete", "Fault"};
  static char *statusStr[] = {"Disabled", "Waiting", "IPTerm", "Failed","Enabled"};

  Display_printf(display, 0, 0, "Service Status: %-9s: %-9s: %-9s: %03d\n",
                 taskName[item - 1], statusStr[status], reportStr[report / 256],
                 report & 0xFF);

  /* report common system issues */
  if ((item == CFGITEM_SERVICE_DHCPCLIENT) &&
      (status == CIS_SRV_STATUS_ENABLED) &&
      (report & NETTOOLS_STAT_FAULT))
  {
    Display_printf(display, 0, 0, "DHCP Client initialization failed; check your network.\n");
    while (1);
  }
}

Hi Ben,

It seems that the PC can link to device successfully but the device cannot enable Telnet service. I enter ”telnet 192.168.1.100 1000“ in Wndows Terminal like picture_1. 

After hitting Enter key, it becoms shown in picture_2. 

Throughout the process, I used WireShark tools to capture packets and the result is shown as picture_3. Please help to check it.

My PC IP is 192.168.1.20 and the device IP is 192.168.1.100. The Telnet port number is 1000.

Thanks~

Hi Ben,

I change the Telnet port in a file name tcpEchoHooks.c like below. I don't use syscfg GUI

There is not any log from the UART console when doing Telnet linking.

Hi Ryan,

I followed up with the e2e engineer.

Regards,

Ben

Hi Ryan,

Ah, I can see why you might expect that to work, however:

Many of the sample projects use netIPAddrHook() to start a network task, with a hard coded port number, when an IP address has first been assigned.

Telnet is a service, so is started differently. When you check Telnet in the syscfg GUI, the following code is added to the generated code file ti_ndk_config.c. Here, the port number (telnet.param.Port = 23;) is generated according to the port parameter from the GUI Telnet settings.

/*
* ======== ti_ndk_config_telnet_init ========
* Configure and initialize Telnet server(s)
*/
extern SOCKET ConsoleOpen(struct sockaddr *pSinClient);

static void ti_ndk_config_telnet_init(void *hCfg)
{
    CI_SERVICE_TELNET telnet;

    /* Specify Telnet service for Telnet instance: CONFIG_TELNETS_0 */
    /* NOTE! The application must provide the service report function matching this prototype! */

    extern void serviceReport(uint32_t item, uint32_t status,
    uint32_t report, void *h);

    memset(&telnet, 0, sizeof(telnet));
    telnet.cisargs.Mode = CIS_FLG_CALLBYIP;
    telnet.cisargs.IPAddr = inet_addr("0.0.0.0");
    telnet.cisargs.pCbSrv = serviceReport;
    telnet.param.MaxCon = 8;
    telnet.param.Port = 23;
    telnet.param.Callback = &ConsoleOpen;

    CfgAddEntry(hCfg, CFGTAG_SERVICE, CFGITEM_SERVICE_TELNET, 0, sizeof(telnet), (unsigned char *)&telnet, 0);
}

If you edit this, it will get overwritten but I would recommend sticking with 23, at least until you get something working.

If you have added the service report function to the Telnet setting (like the sample I posted yesterday), you should get some message about Telnet (enabled or failed). Until it reports "enabled", you are not going to be able to connect.

Best regards
Jim

Hi Ben,

Thank you for your help!