Content originally posted in LPCWare by NXP_USA on Thu Jan 12 18:16:19 MST 2012
A good tool for making checksums is the SRecord Tools available from srecord.sourceforge.net. The SRecord Tools can process and convert many types of input files (such as .hex, .bin, etc.) and generate or insert checksums. The tools are smart so you can have them only checksum a certain address range, or split a .hex file up and generate several .bin files if you want. There are command-line versions available for Windows.