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try using interrupts to trigger can reading again #25

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rickyelopez opened this issue Sep 2, 2020 · 0 comments
Open
2 tasks

try using interrupts to trigger can reading again #25

rickyelopez opened this issue Sep 2, 2020 · 0 comments
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enhancement New feature or request good first issue Good for newcomers requires cage Task requires access to the cage or resources in the cage

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@rickyelopez
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I tried this once upon a time but it didn't work very well (read: at all). In theory we can save some cycle time by not checking CAN unless we know there's a message. The MCP2515 supports sending an interrupt when a message has been received, and I wired up that pin even though I didn't intend to use it.

  • Create ISR that sets a "message received" flag
  • Every cycle, check that flag. If true, process message
@rickyelopez rickyelopez added enhancement New feature or request good first issue Good for newcomers requires cage Task requires access to the cage or resources in the cage labels Sep 2, 2020
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enhancement New feature or request good first issue Good for newcomers requires cage Task requires access to the cage or resources in the cage
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