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CAN Tx queue uses more RAM than necessary #4

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jschall opened this issue Jan 19, 2019 · 0 comments
Open

CAN Tx queue uses more RAM than necessary #4

jschall opened this issue Jan 19, 2019 · 0 comments
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enhancement New feature or request RAM recovery

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@jschall
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jschall commented Jan 19, 2019

sizeof(struct can_tx_frame_s) is currently around 32 bytes. Reducing this will save significant amounts of RAM. A few ways:

  • packed storage
  • 16-bit milliseconds for creation time and timeout.
  • 8-bit or 16-bit array index for the next pointer rather than a full 32-bit pointer
  • split into 2 types: one that carries a payload, and one that carries ID and metadata.
@jschall jschall added enhancement New feature or request RAM recovery labels Jan 19, 2019
@jschall jschall mentioned this issue Apr 22, 2020
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