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Ticket #28562
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Ticket #28562
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赤外線受光素子の出力はIRQでなくTIOCAの方が良かった
Open Date:
2012-05-30 07:30
Last Update:
2012-06-01 21:12
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Reporter:
shintamainjp
Owner:
shintamainjp
Type:
Support Request
Status:
Open [Owner assigned]
Component:
hard
MileStone:
KOZOS EXPBRD #00-REV.Bの設計
Priority:
5 - Medium
Severity:
5 - Medium
Resolution:
None
File:
None
Details
Reply
何も考えずにIRQに入れたけど、IRQでは立ち下がりで割り込みが入る。
NECやAEHAのようにストップビットが入るプロトコルの場合には、IRQでも取れなくないが、SONYのようなストップビットを持たないプロトコルの場合、最後のビットの判定が難しい。
TIOCAなら両エッジでとれるし、カウンタとの連動もやりやすかったと思う。
Ticket History (2/2 Histories)
2012-05-30 07:30
Updated by:
shintamainjp
New Ticket "赤外線受光素子の出力はIRQでなくTIOCAの方が良かった" created
2012-06-01 21:12
Updated by:
shintamainjp
Comment
Reply
IRQでも、ストップビットが最後に付いてくるようなプロトコルなら問題ない。
REV.Aとの互換性を維持するなら変更しない方が良いかも。
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