Class CRC

Example

// Using predefined CRC algorithms
const crc16Modbus = CRC.default('CRC16_MODBUS')
if (crc16Modbus) {
  const data = Buffer.from([0x01, 0x02, 0x03, 0x04])
  const crcValue = crc16Modbus.compute(data)
  console.log(`CRC16-MODBUS: 0x${crcValue.toString(16).padStart(4, '0')}`)
}

// Creating custom CRC configuration (like in bootloader.ts)
const customCrc = new CRC('self', 16, 0x3d65, 0, 0xffff, true, true)
const fileContent = await fs.readFile('firmware.bin')
const crcResult = customCrc.compute(fileContent)

// Computing CRC for different data types
const crc32 = CRC.default('CRC32')
if (crc32) {
  // From number array
  const arrayData = [0x48, 0x65, 0x6c, 0x6c, 0x6f] // "Hello"
  const crcFromArray = crc32.compute(arrayData)

  // From Buffer
  const bufferData = Buffer.from('Hello', 'utf8')
  const crcFromBuffer = crc32.compute(bufferData)

  // Get CRC as Buffer (useful for network protocols)
  const crcBuffer = crc32.computeBuffer(bufferData)
}
Copy