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The S_BLOCK_WRITE (0x30) command sends a stream of bytes to the dive computer. Because the payload has no fixed length and there is no length field included, the hwOS firmware detects the end of the stream by means of a 400ms timeout. The main disadvantage of this approach is that a short hiccup in the communication will be incorrectly detected as the end of the stream. Hence only a part of the data will get written to the flash memory, and the remainder of the data will get interpreted as the next commands. To avoid this problem, the hwOS firmware v3.09 and later supports a new S_BLOCK_WRITE2 (0x31) command, which uses a fixed size payload of 256 bytes. Reported-by: Ralph Lembcke <mail@ralph-lembcke.de>
Overview ======== Libdivecomputer is a cross-platform and open source library for communication with dive computers from various manufacturers. The official web site is: http://www.libdivecomputer.org/ The sourceforge project page is: http://sourceforge.net/projects/libdivecomputer/ Installation ============ On UNIX-like systems (including Linux, Mac OS X, MinGW), use the autotools based build system. Run the following commands from the top directory (containing this file) to configure, build and install the library and utilities: $ ./configure $ make $ make install If you downloaded the libdivecomputer source code directly from the git source code repository, then you need to create the configure script as the first step: $ autoreconf --install To uninstall libdivecomputer again, run: $ make uninstall Support ======= Please send bug reports, feedback or questions to the mailing list: http://libdivecomputer.org/cgi-bin/mailman/listinfo/devel or contact me directly: jef@libdivecomputer.org License ======= Libdivecomputer is free software, released under the terms of the GNU Lesser General Public License (LGPL). You can find a copy of the license in the file COPYING.