====== command qCRC ======

**Format:** ‘qCRC:addr,length’

**Meaning:** Compute the CRC checksum of a block of memory using CRC-32 defined in IEEE 802.3. The CRC is computed one byte at a time, taking the most significant bit of each byte first. The initial pattern code 0xffffffff is used to ensure leading zeros affect the CRC.

**Reply:** <code>C crc32</code> The specified memory region’s checksum is crc32.