Embedded system switching boot device

Abstract

The embedded system switching starting device includes a processor, a switching signal generation module, an electronic switch module, a solidified memory, a solidified memory power supply module and a backup memory; the solidified memory and the backup memory are both used to store boot programs and operating systems; the switching signal The generating module is used to generate a switching signal; the electronic switch module is used to generate a closing signal when receiving the switching signal; the solidified memory power supply module is used to supply power to the solidified memory when the closing signal is not received, and when receiving the closed signal When the signal is turned off, the power supply to the solidified memory is stopped; the processor is used to read the boot program from the solidified memory when the solidified memory is powered on, and read the boot program from the backup memory when the solidified memory is powered off. The above invention can conveniently and simply start the system from the backup memory when the boot program of the solidified memory is lost or damaged, without dismantling the device or requiring additional tools and equipment.

Description

technical field [0001] The invention relates to an embedded system switch starting device. Background technique [0002] At present, in embedded system devices, operating systems and application software are often solidified in memories such as Nand Flash, eMMC or SD cards. Embedded processor startup methods and sequences are versatile and configurable, that is, when the processor is powered on, it first goes to the first startup channel to check whether there is a boot program in the solidified memory. If there is, the boot program will be run to start the system. Automatically check whether the storage medium of other channels has a boot program. If there is a problem with the quality of the solidified memory or it is hit by static electricity during use, the bootloader of the operating system is lost or faulty, which will cause the operating system to fail to start normally. In addition, when the device system is manually updated, the bootloader is accidentally erased a...

AI Technical Summary

Problems solved by technology

[0004] 1. Disassemble the device, solder the Jatag test point reserved on the circuit board with the flying wire, connect the Jatag burning tool to re-burn the boot program, and then burn the system to repair the device. This method needs to disassemble the device and use Jatag burning, and burning is very slow, which is not conducive to users to repair by themselves, and it is extremely inconvenient for product development or after-sales maintenance;

[0005] 2. Disassemble the device, solder the startup mode selection resistor jumper on the circuit board, set the startup mode of the device by selecting the resistor, and then re-program the boot program and operating system. This method requires disassembly of the device and the use of The operation of tools such as electric soldering iron is not conducive to the user's own repair, and product development or after-sales maintenance is also complicated

Images