using new radio packet format
This commit is contained in:
parent
d23ef2a0df
commit
560837b4db
|
@ -26,13 +26,16 @@
|
|||
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
|
||||
* SUCH DAMAGE.
|
||||
*
|
||||
* $Id: TR1001RadioPacketConverter.java,v 1.1 2008/02/07 14:55:35 fros4943 Exp $
|
||||
* $Id: TR1001RadioPacketConverter.java,v 1.2 2008/03/18 13:13:56 fros4943 Exp $
|
||||
*/
|
||||
|
||||
package se.sics.cooja.mspmote.interfaces;
|
||||
|
||||
import org.apache.log4j.Logger;
|
||||
|
||||
import se.sics.cooja.COOJARadioPacket;
|
||||
import se.sics.cooja.RadioPacket;
|
||||
|
||||
/**
|
||||
* Converts radio packets between TR1001/ESB and COOJA.
|
||||
* Some functionality, such as GCR coding, is ESB TR1001 driver specific.
|
||||
|
@ -104,10 +107,12 @@ public class TR1001RadioPacketConverter {
|
|||
* COOJA radio packet
|
||||
* @return TR1001 radio packet
|
||||
*/
|
||||
public static byte[] fromCoojaToTR1001(byte[] coojaPacket) {
|
||||
public static TR1001RadioByte[] fromCoojaToTR1001(RadioPacket coojaPacket) {
|
||||
|
||||
byte[] coojaPacketData = coojaPacket.getPacketData();
|
||||
|
||||
/* Create "ESB" packet: add length header and CRC16 footer */
|
||||
byte[] esbPacket = addLengthAndCRC(coojaPacket);
|
||||
byte[] esbPacket = addLengthAndCRC(coojaPacketData);
|
||||
|
||||
/* GCR encode radio frame */
|
||||
byte[] encodedData = gcrCoder.gcrEncode(esbPacket, esbPacket.length);
|
||||
|
@ -134,7 +139,11 @@ public class TR1001RadioPacketConverter {
|
|||
tr1001Frame[TR1001_HEADER_LENGTH + encodedData.length + 2] = (byte) 0x33;
|
||||
tr1001Frame[TR1001_HEADER_LENGTH + encodedData.length + 3] = (byte) 0xcc;
|
||||
|
||||
return tr1001Frame;
|
||||
TR1001RadioByte[] tr1001Bytes = new TR1001RadioByte[tr1001Frame.length];
|
||||
for (int i=0; i < tr1001Frame.length; i++) {
|
||||
tr1001Bytes[i] = new TR1001RadioByte(tr1001Frame[i], TR1001Radio.CYCLES_BETWEEN_BYTES);
|
||||
}
|
||||
return tr1001Bytes;
|
||||
}
|
||||
|
||||
/**
|
||||
|
@ -153,8 +162,13 @@ public class TR1001RadioPacketConverter {
|
|||
* TR1001 packet data length
|
||||
* @return COOJA radio packet
|
||||
*/
|
||||
public static byte[] fromTR1001ToCooja(byte[] tr1001Data,
|
||||
int tr1001DataLength) {
|
||||
public static RadioPacket fromTR1001ToCooja(TR1001RadioByte[] tr1001Bytes, int tr1001DataLength) {
|
||||
|
||||
byte[] tr1001Data = new byte[tr1001Bytes.length];
|
||||
for (int i=0; i < tr1001Bytes.length; i++) {
|
||||
tr1001Data[i] = tr1001Bytes[i].getByte();
|
||||
}
|
||||
|
||||
/* Remove TR1001 specifics: preamble, synch and trail bytes */
|
||||
System.arraycopy(tr1001Data, TR1001_HEADER_LENGTH, tr1001Data, 0,
|
||||
tr1001DataLength - TR1001_HEADER_LENGTH - TR1001_FOOTER_LENGTH);
|
||||
|
@ -172,7 +186,7 @@ public class TR1001RadioPacketConverter {
|
|||
logger.fatal("Decoded data is smaller than specified data length: "
|
||||
+ (dataLength + ESB_HEADER_LENGTH + ESB_HEADER_LENGTH) + " vs "
|
||||
+ decodedData.length);
|
||||
return new byte[0];
|
||||
return null;
|
||||
}
|
||||
|
||||
/* Remove ESB header and CRC footer */
|
||||
|
@ -180,13 +194,11 @@ public class TR1001RadioPacketConverter {
|
|||
System.arraycopy(decodedData, ESB_HEADER_LENGTH, packetData, 0,
|
||||
dataLength);
|
||||
|
||||
return packetData;
|
||||
return new COOJARadioPacket(packetData);
|
||||
}
|
||||
|
||||
logger
|
||||
.fatal("Error when converting emulated to application level, returning empty: "
|
||||
+ tr1001DataLength);
|
||||
return new byte[0];
|
||||
logger.fatal("Error when converting emulated to application level, returning null packet");
|
||||
return null;
|
||||
}
|
||||
|
||||
/**
|
||||
|
@ -231,7 +243,9 @@ public class TR1001RadioPacketConverter {
|
|||
* Byte
|
||||
* @return True if conversion finished (either successful of failed).
|
||||
*/
|
||||
public boolean fromTR1001ToCoojaAccumulated(byte b) {
|
||||
public boolean fromTR1001ToCoojaAccumulated(TR1001RadioByte tr1001Byte) {
|
||||
byte b = tr1001Byte.getByte();
|
||||
|
||||
if (accumulatedConversionState == AccumulatedConversionState.TR1001_PREAMBLE) {
|
||||
if (b == (byte) 0xaa || b == (byte) 0xff) {
|
||||
return false;
|
||||
|
@ -301,12 +315,12 @@ public class TR1001RadioPacketConverter {
|
|||
/**
|
||||
* @return Converted data (application level)
|
||||
*/
|
||||
public byte[] getAccumulatedConvertedData() {
|
||||
public RadioPacket getAccumulatedConvertedCoojaPacket() {
|
||||
byte[] dataArrayByte = new byte[accumulatedConversionDataArray.length];
|
||||
for (int i = 0; i < accumulatedConversionDataArray.length; i++) {
|
||||
dataArrayByte[i] = (byte) accumulatedConversionDataArray[i];
|
||||
}
|
||||
return dataArrayByte;
|
||||
return new COOJARadioPacket(dataArrayByte);
|
||||
}
|
||||
|
||||
/**
|
||||
|
|
Loading…
Reference in a new issue