Periodically Transmit Callsigns on Licensed Frequencies

[AarC10]

Description

To be law abiding citizens we need to transmit callsigns after every transmission, or every 10 minutes. Just do every 5 minutes, to be safe while not murdering our transmit times for downlinking flight data

Type of change

• New feature (non-breaking change which adds functionality)

How Has This Been Tested?

Brain

Checklist:

• New functionality is documented in the necessary spots (i.e new functions documented in the header)
• Unit tests cover any new functionality or edge cases that the PR was meant to resolve (if applicable)
• The CI checks are passing
• I reviewed my own code in the GitHub diff and am sure that each change is intentional
• I feel comfortable about this code flying in a rocket

[Copilot]

Pull request overview

This PR introduces a periodic callsign broadcast mechanism intended to ensure the radio transmits an identifier while operating on licensed frequencies, using a timer-driven tenant and a helper check on the LoRa configuration.

Changes:

• Added CCallsignBroadcastTenant to periodically enqueue a callsign payload for downlink.
• Added CLora::IsLicensedFrequency() helper (410–450 MHz) to gate callsign behavior.
• Hooked callsign tenant registration into CRadioModule::SetupCallbacks() when the current frequency is licensed.

Reviewed changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 7 comments.

Show a summary per file

File	Description
lib/f_core/radio/application/c_callsign_broadcast_tenant.cpp	Implements timer callback to send a callsign LaunchLoraFrame.
include/f_core/radio/application/c_callsign_broadcast_tenant.h	Declares the new callsign broadcast tenant.
include/f_core/radio/c_lora.h	Adds IsLicensedFrequency() helper.
app/backplane/radio_module/src/c_radio_module.cpp	Registers callsign broadcast during callback setup when licensed.
app/backplane/radio_module/include/c_radio_module.h	Instantiates the new callsign broadcast tenant (currently with a hardcoded callsign).
include/f_core/radio/frame_handlers/c_lora_freq_request_tenant.h	Removes extra blank lines.

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