This change is new as of summer/fall 2021. Older , older GSW code only supports one telemetry packet per vehicle and only has one main block and one info block of shared memory. This is limiting in that we may have sensors that update at very different rates and don't want to send redundant data for the sensors that don't update as fast.
A primary function of the ground software is to allow telemetry from the rocket to be accessed by other processes. The data contained in telemetry packets received by the ground station are placed into shared memory, this allows the fastest access possible for multiple processes to access this data.
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A vehicle can have multiple telemetry packets (this is new) with data potentially overlapping between packets (e.g. one packet sends IMU data, another packet sends IMU data AND GPS data).
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