59bfb0f318
The Matrix uses the same communication protocol as the Nemo Wide 2, except that the sending the request packets with just a single write operation doesn't seem to work. That's very surprising because it caused no problems for the Nemo Wide 2 or the Icon HD! The first two bytes of each request packet are probably some kind of command type. These two bytes are answerred immediately with an ACK byte (0xAA). Once this ACK byte has been received, the payload of the command (if any) can be sent, and finally the response packet can be received. I suspect that when trying to send the entire command at once, the device somehow doesn't receive the payload bytes correctly. Maybe it's still busy processing those first two bytes, which causes the remainder of the packet to get dropped? That might explain why the version commands is not affected, because it doesn't have any payload bytes!
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.divesoftware.org/libdc/ 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: https://lists.sourceforge.net/lists/listinfo/libdivecomputer-devel or contact me directly: jefdriesen@hotmail.com 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.