This repository contains NASA's Telemetry Output Lab (to_lab), which is a framework component of the Core Flight System.

This lab application is a non-flight utility to downlink telemetry from the cFS Bundle. It is intended to be located in the apps/to_lab subdirectory of a cFS Mission Tree. The Core Flight System is bundled at https://github.com/nasa/cFS (which includes to_lab as a submodule), which includes build and execution instructions.

to_lab is a simple telemetry downlink application that sends CCSDS telecommand packets over a UDP/IP port. The UDP port and IP address are specified in the "Enable Telemetry" command. It does not provide a full CCSDS Telecommand stack implementation.

To send telemtry to the "ground" or UDP/IP port, edit the subscription table in the platform include file: fsw/platform_inc/to_lab_sub_table.h. to_lab will subscribe to the packet IDs that are listed in this table and send the telemetry packets it receives to the UDP/IP port.

• Adds header guard to to_lab_sub_table.h
• See nasa#59

• Remove reference to deprecated CFE_ES_SHELL_TLM_MID.
• See nasa#58

• Fixes bug where an unset address values caused subscriptions to MsgId 0 over 200 times. Added a TO_UNUSED entry at the end of the subscription list and a break in the subscription loop when TO_UNUSED found. No more subscriptions on the unused table slots (no MsgId 0 subscriptions).
• Corrects return value of TO_LAB_init() to be int32 instead of int. Declaration now matches definition, and app builds without errors.
• Add build number and baseline to version reporting.
• See nasa#53

• Makes the TO_LAB_Subs table into a CFE_TBL-managed table.
• See nasa#46

• Replace references to ccsds.h types with the cfe_sb.h-provided type.
• See nasa#44

• Apply code style
• See nasa#43

• Configure the maximum depth supported by OSAL, rather than a hard coded 64.
• See nasa#39

• Apply the CFE_SB_MsgIdToValue() and CFE_SB_ValueToMsgId() routines where compatibility with an integer MsgId is necessary - syslog prints, events, compile-time MID #define values.
• Deprecates shell tlm subscription
• Changes to documentation
• See nasa#38

• Use OSAL socket API instead of BSD Sockets

• Use global namespace to isolate variables

• Minor updates (see nasa#27)

• Fix for a clean build with OMIT_DEPRECATED
• Minor updates (see nasa#26)

• Minor updates (see nasa#13)

• Not backwards compatible with OSAL 4.2.1

• Released as part of cFE 6.7.0, Apache 2.0

• Released as part of cFE 6.6.0a, Apache 2.0

As a lab application, extensive testing is not performed prior to release and only minimal functionality is included.

For best results, submit issues:questions or issues:help wanted requests at https://github.com/nasa/cFS.

Official cFS page: http:https://cfs.gsfc.nasa.gov