[mythtv-commits] Ticket #12092: Delay concurrent tunings on shared SCR bus

[MythTV]

#12092: Delay concurrent tunings on shared SCR bus
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     Reporter:  warpme@…         |      Owner:
         Type:  Patch - Feature  |     Status:  new
     Priority:  minor            |  Milestone:  unknown
    Component:  MythTV - DVB     |    Version:  Master Head
     Severity:  medium           |   Keywords:  Unicable
Ticket locked:  0                |
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 This is PoC patch for potential issue related to fact that UniCable bus is
 shared type bus. For reliable operation, shared bus requires access
 coordination or collision detection. Patch implements access coordination.
 From functional point of view patch should avoid situations where 2 or
 more recorders/EIT scanners are issuing tuning command in EXACTLY the same
 time. Even as tuner's Disecq HW will serialize commands - Unicable
 protocol requires defined guard silence between tuning command sets. For
 reference: in my system (4 unicable tuners, 350-500 recordings per week) I
 catch 1 such case during 5 months period.

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Ticket URL: <https://code.mythtv.org/trac/ticket/12092>
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