Experimental Physics and
Industrial Control System

Hello Community,
 
   First of all, I wanted to thank you because you have always been very helpful in solving the doubts and problems we have been having with EPICS 7 and RTEMS 5.

   This time I am writing to you because we are trying to deploy an IOC with EPICS 7 and RTEMS 5 on the mvme2307 LCU and we want to configure also the NTP protocol. Looking at the source code, line 307 of the /libcom/RTEMS/setBootConfigFromNVRAM.c file, we see that the NTP server is indicated in the NVRAM parameter "ServerIPAddress" (see code extract below).

rtems_bsdnet_config.name_server[0] =
    rtems_bsdnet_config.ntp_server[0] =
      rtems_bsdnet_bootp_server_name = addr(server, nvram.ServerIPAddress);
    rtems_bsdnet_bootp_server_address.s_addr = nvram.ServerIPAddress;

    When we start the LCU and before starting the IOC startup script, we see that there is communication with the NTP service of the server. We check this by using the command on the server ntpdc -c monlist, where we can see that communication with the service takes place and is logged in the command output. What happens afterward is that we do not see a correct communication because the values of the columns (count, avgint lstint) do not reflect this. However, when booting an IOC with EPIC 3.14.8 and RTEMS4 using the same LCU, we see that the values are updated correctly.

    On the other hand, when we run generalTimeReport at the IOC prompt, in EPICS 3.14.8 version we see NTP as "Time Providers", but not in the case of EPICS 7 and RTEMS 5 (see the output of both commands at the end of the post).