Abstract
In some application domains, using a download cable to update the system on a programmable chip (SoPC) is infeasible, which reduces the maintainability and flexibility of the system. Hence the remote system update (RSU) scheme is being studied. In this scheme, the serial configuration (EPCS) device involves a factory mode configuration image, which acts as the baseline, and an application mode configuration image, which is used for some specific functions. Specifically, a new application mode image is delivered through the controller area network (CAN) with the improved application layer protocol. Besides, the data flow and data check for transmitting a new image are constructed to combine the transmission reliability with efficiency. The boot sequence copying hardware configuration code and software configuration code is analyzed, and the advanced boot loader is carried out to specify boot address of the application mode image manually. Experiments have demonstrated the feasibility of updating and running a new application mode image, as well as rolling back into the factory mode image when no application mode image is available. This scheme applies a single CAN bus, which makes the system easy to construct and suitable for the field distributed control system.
Highlights
system on a programmable chip (SoPC) is a kind of embedded system that based on the field programmable gate arrays (FPGA)
In some occasions, such as the satellite borne equipment, underwater equipment, and core printed circuit boards that are located in the cumbersome electromagnetism shields, connection via the download cable between the SoPC and computer is infeasible
The remote system update (RSU) dedicated circuit chooses to load the factory mode image or application mode image stored in the EPCS device
Summary
SoPC is a kind of embedded system that based on the field programmable gate arrays (FPGA) It has many merits, such as the rich hardware resource, flexible function, as well as the low project cost, and it is widely used in automation, power electronics, and microwave [1,2,3,4]. In some occasions, such as the satellite borne equipment, underwater equipment, and core printed circuit boards that are located in the cumbersome electromagnetism shields, connection via the download cable between the SoPC and computer is infeasible. It brings about great trouble when the equipment breaks down or new function is wanted. Remote system update (RSU) for programmable devices via the communication system has become a research hotspot [5,6,7,8]
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