Opened 7 years ago

Closed 7 years ago

Last modified 7 years ago

#12092 closed Patch - Feature (fixed)

Delay concurrent tunings on shared SCR bus

Reported by: warpme@… Owned by: Karl Dietz <dekarl@…>
Priority: minor Milestone: 0.28
Component: MythTV - DVB Version: Master Head
Severity: medium Keywords: Unicable
Cc: Ticket locked: no


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.

Attachments (1)

0023-delay-concurent-tunings.patch (2.6 KB) - added by warpme@… 7 years ago.

Download all attachments as: .zip

Change History (3)

Changed 7 years ago by warpme@…

comment:1 Changed 7 years ago by Karl Dietz <dekarl@…>

Owner: set to Karl Dietz <dekarl@…>
Resolution: fixed
Status: newclosed

In a8ca00d9c252901d917e9742072705969252bf9d/mythtv:

Delay concurrent tunings on shared SCR bus

Patch by warpme

Fixes #12092

comment:2 Changed 7 years ago by Stuart Auchterlonie

Milestone: unknown0.28
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