A method of debugging and upgrading through the usb port

Abstract

The invention discloses a method for debugging and upgrading through a USB port. The method includes: the user starts the debugging and upgrading platform, enables the USB‑Host functional unit in the debugging and upgrading platform, and runs the ISP debugging and upgrading program; The debugging and upgrading platform is connected. After the target device is powered on, run the boot debugging and upgrading program, enable the USB-Device communication function, and disable the internal pull-up of the target device; the USB-Host function unit in the debugging and upgrading platform is provided by the pull-up resistor in the USB connection device. The trigger signal monitors the connection action of the target device, and notifies the ISP to debug and upgrade the program, and the ISP debug and upgrade program sends a debug and upgrade command packet to the target device; the target device enters the debug and upgrade mode after receiving the debug and upgrade command packet. When the user needs to debug and upgrade, using this method, the debugging and upgrading operation can also be conveniently completed for the target device that only has the USB interface of the embedded system.

Description

Technical field: [0001] The invention relates to a method for debugging and upgrading through a USB port. Background technique: [0002] With the rapid development of electronic information technology, embedded system applications are ubiquitous, and the update and upgrade of embedded systems do not happen frequently, but they are indispensable. The internal bootloader of the embedded system is mainly to realize the functions of remote upgrade and update of the embedded system. The bootloader runs first after the embedded system is powered on. It is based on some specific trigger conditions. To determine whether to debug and upgrade. Usually, the triggering methods for debugging and upgrading of embedded systems include: 1. Through additional physical detection methods, such as buttons, jumping, etc.; data packets. [0003] For the first method, the manufacturer may need to reserve an embedded system debugging and upgrading interface for receiving physical trigger signals...

AI Technical Summary

Problems solved by technology

[0003] For the first method, the manufacturer may need to leave an embedded system debugging and upgrading interface on the outer packaging of the embedded system product to receive the physical trigger signal, but this may affect The overall beauty of embedded system products and the waste of hardware costs; if this interface is not provided on the outer packaging of embedded system products, it is necessary to disassemble the product for debugging and upgrading, which is extremely inconvenient for users