Mode-S CRC Checker

A CRC implementation for ADS-B Mode-S messages

Installation

$ npm install --save modes-crc

Documentation

Checker

• checksum
• crc

Fixer

• fix

Checker

Fixer

Quick Examples

Pass it a buffer to the actual ADSB packet and the number of bits in the packet.

var checker = require('modes-crc')
 
var data = [93, 77, 32, 35, 122, 85, 166]
 
var packetChecksum = checker.checksum(data, checker.MODES_SHORT_MSG)

It will do a parity check and output a checksum that should be equal to the result of the packet CRC obtained by

var checker = require('modes-crc')
 
var data = [93, 77, 32, 35, 122, 85, 166]
 
var packetCrc = checker.crc(data, checker.MODES_SHORT_MSG)

Credits

A port of antirez's dump1090, but in Node.js: https://github.com/antirez/dump1090/

License

Keeps the 3-Clause BSD License from the "parent" repository