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P25 - added parsing of packet payload data for confirmed PDUs.

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dennis.sheirer
2015-01-19 13:17:11 +00:00
parent 51d6b328bd
commit cc5edd4790
16 changed files with 872 additions and 82 deletions
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15
src/edac/CRCP25.java
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@@ -332,7 +332,7 @@ public class CRCP25
*/
public static CRC checkCRC9( BitSetBuffer message, int messageStart )
{
int calculated = 0x1FF; //Initial fill of all ones
int calculated = 0x0; //Initial fill of all ones
/* Iterate the set bits and XOR running checksum with lookup value */
for (int i = message.nextSetBit( messageStart );
@@ -353,7 +353,16 @@ public class CRCP25
int checksum = message.getInt( messageStart + 7, messageStart + 15 );
return ( calculated ^ checksum ) == 0 ? CRC.PASSED : CRC.FAILED_CRC;
int residual = calculated ^ checksum;
// mLog.debug( "CALC:" + calculated + " CHECK:" + checksum + " RESID:" + residual );
if( residual == 0 || residual == 0x1FF )
{
return CRC.PASSED;
}
return CRC.FAILED_CRC;
}
@@ -432,7 +441,7 @@ public class CRCP25
public static void main( String[] args )
{
String raw = "000000010110100101010001000000000100010100000000000000000010000000011001001011100000000000000000011111110001000101001011100101110000101000110011";
String raw = "000000001000001100000001010001111011000100001010010001111100000000000101000000000000000001000000000000110000000000000001101010101010101010101010";
BitSetBuffer message = BitSetBuffer.load( raw );