Abstract
Abstract. The connection of different modules from different manufacturers into a single bus for the exchange of data and control is a challenge for the agricultural machinery industry by using ISO 11783 standards. It shows strong potential to become the reference standard for the exchange of data between modules on the agricultural tractor and implements. One of the important electronic control units is the virtual terminal (VT). This research presents an implementation of VT and some other electronic control units. The VT and ECU's firmware programming development implemented by using the IsoAgLib open source library and some of the tools, such as the VT-designer demo version, vt2iso and proc2iso. The implementation of that library is fully compatible with ISO 11783 standard. The main part of the system is an embedded board based on a Freescale i.MX6 ARM Cortex -A9 quad-core microprocessor unit with multimedia and the high resolution display units. When creating embedded devices, one crucial part is the graphic user interfaces (GUI) and the startup time of the system. We develop the GUI of VT by using the Qt-embedded tool and the modifying embedded Linux OS, such as u-boot, kernel and root file system for the faster startup. Also we simulated modules are the VT, implement ECUs such as the sprayer and GPS sensor the analysis all of CAN messages, we tested with network protocols such as transport protocol, extended transport protocol, address claiming , request parameter group number messages, an ISO 11783 object pool(IOP) format for implement, and interpretation of IOP files in the VT.
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