emCompress from Segger Microcontroller in Germany reduces update times by compressing data for all kinds of applications. Designed for embedded systems, emCompress can compress and decompress data even on the smallest microcontrollers. In the automotive industry, this can be used to avoid the speed limitation of bus systems such as the Controller Area Network (CAN).
The tool supports the Lempel–Ziv–Markov chain algorithm (LZMA) to perform lossless data compression as well as other algorithms such as LZMA2. Typical compression rates for firmware images range from 2 to 4, reducing the update time between 50 and 75 percent. The decompression algorithm also supports files that were created by PC-based tools such as “7-ZIP” or “Lzip” which use LZMA as well.
“Thanks to the highly effective implementation of the state-of-the-art compression algorithms in SEGGER's emCompress, we can significantly speed up ECU firmware updates to the delight of our customers,” says Bob Ueyama, Executive Vice President of eSOL. “Time spent in the garage for a firmware update now can be reduced to an absolute minimum.”
“While the firmware of automotive ECUs is getting more and more comprehensive with each vehicle generation, updates in the garage are very often still done using existing tools for the CAN-bus,” said Ivo Geilenbruegge, CEO of Segger. “We are very pleased to see that our emCompress is a key component for eSOL to drastically reduce their update times.”
The emCompress software is written in well-commented ANSI C and is both compiler and target independent. emCompress is not covered by an open-source or required-attribution license and can be integrated into any commercial or proprietary product, without the obligation to attribute the vendor or disclose the combined source. In addition SEGGER supports the special needs of automotive customers, particularly with MISRA C compliance and extensive regression tests for ECU firmware updates.