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F´ Flight Software - C/C++ Documentation
devel
A framework for building embedded system applications to NASA flight quality standards.
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The Svc::CmdSplitter
splits an uplinked command execution to two separate Svc::CmdDispatcher
components: one "local" and the other "remote". This splitting is done by opcode where local commands are commands whose opcode is less than a configured base and remote commands are those opcodes equal to or larger than that configurated base setting. Svc::CmdSplitter
is intended to be used as part of the hub pattern to route command to a command dispatcher in the remote deployment.
All input and output are done through port arrays that mirror the port array of input commands to the command dispatcher. In this way Svc::CmdSplitter
may support multiple command sources in the same manner that Svc::CmdDispatcher
does.
The requirements for Svc::CmdSplitter
are as follows:
Requirement | Description | Verification Method |
---|---|---|
SVC-CMD-SPLITTER-000 | The Svc::CmdSplitter component shall support multiple command sources. | Unit Test |
SVC-CMD-SPLITTER-001 | The Svc::CmdSplitter component shall accept incoming command buffers. | Unit Test |
SVC-CMD-SPLITTER-002 | The Svc::CmdSplitter component shall route commands under a configured value to the "local" port. | Unit Test |
SVC-CMD-SPLITTER-003 | The Svc::CmdSplitter component shall route commands under a configured value to the "remote" port. | Unit Test |
SVC-CMD-SPLITTER-004 | The Svc::CmdSplitter component shall route commands to the "local" port when an error occurs. | Unit Test |
SVC-CMD-SPLITTER-005 | The Svc::CmdSplitter component shall forward command status responses. | Unit Test |
Name | Type | Kind | Description |
---|---|---|---|
CmdBuff | Fw.Com | sync input array | Array of incoming command buffer. |
seqCmdStatus | Fw.CmdResponse | sync input array | Array of incoming command status from both local and remote dispatchers. |
LocalCmd | Fw.Com | output array | Array of outgoing command buffer for local command dispatcher. |
RemoteCmd | Fw.Com | output array | Array of outgoing command buffer for remote command dispatcher. |
forwardSeqCmdStatus | Fw.CmdResponse | output array | Array of outgoing forwarded command status. |
Port arrays mirror those of the command dispatcher in order to support multiple sources in the same fashion that command dispatcher does.
The Svc::CmdSplitter
routes an incoming command buffer of type Fw::ComBuffer
to a local or remote command dispatcher. This is done by comparing the command's opcode to the configured base opcode value. All command responses are forwarded through.
Svc::CmdSplitter
has only one internal state variable: m_remoteBase
the configured base opcode for remote opcodes. This is set by a call to the configure()
method at system start-up.
Svc::CmdSplitter
has no significant algorithms.
To see unit test coverage run fprime-util check --coverage
in the Svc::CmdSplitter
directory
Date | Description |
---|---|
2023-06-12 | Initial |
2023-09-27 | Support multiple command inputs |