From 10f2a7a7b7725e1ef1c841094fa7282aba3e858d Mon Sep 17 00:00:00 2001 From: Robin Mueller Date: Mon, 11 Oct 2021 11:06:12 +0200 Subject: [PATCH] more information about systemd service --- README.md | 27 +++++++++++++++++++++++---- 1 file changed, 23 insertions(+), 4 deletions(-) diff --git a/README.md b/README.md index f117535d..fa652ad4 100644 --- a/README.md +++ b/README.md @@ -576,11 +576,30 @@ Note: When now setting up a debug session in the Xilinx SDK or Eclipse, the host to localhost instead of the IP address of the Q7S. # TMTC testing -The OBSW supports sending PUS TM packets via TCP or the PDEC IP Core which transmits the data as CADU frames. To make the CADU frames receivabel by the [TMTC porgram](https://egit.irs.uni-stuttgart.de/eive/eive-tmtc), a python script is running as systemd service on the flatsat PC which forwards TCP commands to the TCP server of the OBC and reads CADU frames from a serial interface. The PUS packets transported with the CADU frames are extracted and forwared to the TMTC program's TCP client. The code of the TMTC bridge can be found [here](https://egit.irs.uni-stuttgart.de/eive/tmtc-bridge). To connect the TMTC program to the TMTC-bridge a port forwarding from a host must be set up with the following command: -```` +The OBSW supports sending PUS TM packets via TCP or the PDEC IP Core which transmits the data as +CADU frames. To make the CADU frames receivabel by the +[TMTC porgram](https://egit.irs.uni-stuttgart.de/eive/eive-tmtc), a python script is running as +`systemd` service named `tmtc_bridge` on the flatsat PC which forwards TCP commands to the TCP +server of the OBC and reads CADU frames from a serial interface. The PUS packets transported with +the CADU frames are extracted +and forwared to the TMTC program's TCP client. The code of the TMTC bridge can be found +[here](https://egit.irs.uni-stuttgart.de/eive/tmtc-bridge). To connect the TMTC program to the +TMTC-bridge a port forwarding from a host must be set up with the following command: + +```sh ssh -L 1537:127.0.0.1:7100 eive@2001:7c0:2018:1099:babe:0:e1fe:f1a5 -t bash -```` -Note: The encoding of the TM packets and conversion of CADU frames takes some time. Thus the replies are received with a larger delay compared to a direct TCP connection. +``` + +You can print the output of the `systemd` with + +```sh +journalctl -u tmtc_bridge +``` + +This can be helpful to determine whether any TCs arrive or TMs are coming back. + +Note: The encoding of the TM packets and conversion of CADU frames takes some time. +Thus the replies are received with a larger delay compared to a direct TCP connection. # Direct Debugging