/* AUTO-GENERATED FILE. DO NOT MODIFY.
*
* This class was automatically generated by the
* java mavlink generator tool. It should not be modified by hand.
*/
package com.MAVLink.common;
/**
* X.25 CRC calculation for MAVlink messages. The checksum must be initialized,
* updated with witch field of the message, and then finished with the message
* id.
*
*/
public class CRC {
private static final int[] MAVLINK_MESSAGE_CRCS = {50, 124, 137, 0, 237, 217, 104, 119, 0, 0, 0, 89, 0, 0, 0, 0, 0, 0, 0, 0, 214, 159, 220, 168, 24, 23, 170, 144, 67, 115, 39, 246, 185, 104, 237, 244, 222, 212, 9, 254, 230, 28, 28, 132, 221, 232, 11, 153, 41, 39, 78, 0, 0, 0, 15, 3, 0, 0, 0, 0, 0, 153, 183, 51, 59, 118, 148, 21, 0, 243, 124, 0, 0, 38, 20, 158, 152, 143, 0, 0, 0, 106, 49, 22, 143, 140, 5, 150, 0, 231, 183, 63, 54, 0, 0, 0, 0, 0, 0, 0, 175, 102, 158, 208, 56, 93, 138, 108, 32, 185, 84, 34, 174, 124, 237, 4, 76, 128, 56, 116, 134, 237, 203, 250, 87, 203, 220, 25, 226, 46, 29, 223, 85, 6, 229, 203, 1, 195, 109, 168, 181, 148, 72, 131, 0, 0, 103, 154, 178, 200, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 90, 104, 85, 95, 130, 0, 0, 8, 204, 49, 170, 44, 83, 46, 0};
private static final int CRC_INIT_VALUE = 0xffff;
private int crcValue;
/**
* Accumulate the X.25 CRC by adding one char at a time.
*
* The checksum function adds the hash of one char at a time to the 16 bit
* checksum (uint16_t).
*
* @param data
* new char to hash
**/
public void update_checksum(int data) {
data = data & 0xff; //cast because we want an unsigned type
int tmp = data ^ (crcValue & 0xff);
tmp ^= (tmp << 4) & 0xff;
crcValue = ((crcValue >> 8) & 0xff) ^ (tmp << 8) ^ (tmp << 3) ^ ((tmp >> 4) & 0xf);
}
/**
* Finish the CRC calculation of a message, by running the CRC with the
* Magic Byte. This Magic byte has been defined in MAVlink v1.0.
*
* @param msgid
* The message id number
*/
public void finish_checksum(int msgid) {
update_checksum(MAVLINK_MESSAGE_CRCS[msgid]);
}
/**
* Initialize the buffer for the X.25 CRC
*
*/
public void start_checksum() {
crcValue = CRC_INIT_VALUE;
}
public int getMSB() {
return ((crcValue >> 8) & 0xff);
}
public int getLSB() {
return (crcValue & 0xff);
}
public CRC() {
start_checksum();
}
}