The first kind for formatting presumes that bits with a higher bit number are more important. There are two types of formatting: list of bits that the value is composed of, and the length in bytes. The formatting description is used for data presentation as well as for data recoding after alteration. Next, there is data formating in bow shaped brackets. The length of address depends on the microcontroller family. They all include a feature name and EEPROM address. It is therefore advisable to use the FWI file only with the firmware it is intended for, or with a newer version for the firmware for the same microcontroller. However, PC USB Projects firmwares are built incrementally, so earlier versions lack some parameters, or use the same EEPROM locations for program code. The microcontroller configuration words would be correctly interpreted, but firmware specific default values may be on different locations or missing. Though each FWI file is tailored to a specific microcontroller and its firmware, it may still be used with other HEX files for the same microcontroller. This is also in accordance with microcontrollers flash RAM organizations.Īnother PC USB Projects HEX Editor feature is the ability to interpret firmware information (FWI) files, which contain information of user selectable settings embedded in a HEX file. By default PIC18 has a 16-bit (2 bytes) preferred format, while PC32 has a 32-bit (4 bytes) preferred format. The split of the contents to particular addresses is governed by predefined microcontroller features and preferred data format. As the code line is selected it is split to a sequence of 8, 16 or 32-bit values on the corresponding addresses. Only the user required changes are made.Ī single hexadecimal code line in the HEX file is interpreted and may be easily altered by a user. It tends to preserve the file format as much as possible. PC USB Projects HEX Editor (get it from Downloads section ) enables a human programmer and a hardware designer to easily interpret and change the contents of a HEX file.
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