Device and method for guiding, updating and maintenance based on USB Host
A technology of an instrument and a boot program, applied in the field of system parameters, can solve problems such as inconvenience in upgrading, maintenance, and correction, and achieve the effect of increasing security
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Embodiment 1
[0043] The instrument suddenly encountered a power outage during the software upgrade process, resulting in incomplete code or data, resulting in the system not being able to start or operate normally. At this time, you can use the USB mobile storage device that comes with the instrument to boot the system, and then upgrade the software. This avoids the hassle of going to a repair center or returning to the factory for repairs. The specific working process is:
[0044] Turn on the power, load the boot program from the read-only non-volatile boot memory into the internal memory of the CPU, and execute it;
[0045] Insert the mobile memory (U disk) with the boot program into the USB Host;
[0046] Read the boot sector on the U disk to determine whether the boot is valid (here is valid);
[0047] The U disk boot is valid, and whether to perform U disk boot according to the user's instructions;
[0048] Choose to boot from the U disk, load the boot program on the U disk into t...
Embodiment 2
[0051] Instruments have different system parameters, some of which are so critical that only a handful of people have the authority to correct them. And some other parameters are relatively open, and ordinary users may often need to modify them. In this way, users with different permissions are equipped with different USB mobile storage devices and password protection is configured at the same time. When the user needs to maintain these parameters, after booting with the USB Host, enter the corresponding password to obtain the corresponding authority and perform corresponding operations. And the user can also modify the password at this time. The specific working process is:
[0052] Turn on the power, load the boot program from the read-only non-volatile boot memory into the internal memory of the CPU, and execute it;
[0053]Insert the mobile memory (U disk) with the maintenance program into the USB Host;
[0054] Read the boot sector on the U disk to determine whether t...
Embodiment 3
[0062] During the development process of the instrument, there will be many test versions, which are only the characteristics of the temporary test version, and it is not expected to use this version for a long time. This is after booting through the USB Host, the test version software can be directly copied to the software's running space to run without overwriting the original version. After the test is stable, choose to upgrade. This ensures a reliable transition between testing and stable releases. The specific working process is:
[0063] Turn on the power, load the boot program from the read-only non-volatile boot memory into the internal memory of the CPU, and execute it;
[0064] Insert the mobile memory (U disk) with the maintenance program into the USB Host;
[0065] Read the boot sector on the U disk to determine whether the boot is valid;
[0066] If the U disk boot is valid, whether to perform U disk boot according to the user's instructions;
[0067] If the ...
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