mirror of https://github.com/ArduPilot/ardupilot
Use the presence of UDRx as an indication that the serial port x might need to be supported.
git-svn-id: https://arducopter.googlecode.com/svn/trunk@1200 f9c3cf11-9bcb-44bc-f272-b75c42450872
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@ -33,8 +33,12 @@
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#include "FastSerial.h"
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#include "WProgram.h"
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#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
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#if defined(UDR3)
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# define FS_MAX_PORTS 4
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#elif defined(UDR2)
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# define FS_MAX_PORTS 3
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#elif defined(UDR1)
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# define FS_MAX_PORTS 2
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#else
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# define FS_MAX_PORTS 1
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#endif
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