Device and method for burning serial number to lower computer containing RS (Recommended Standard) 485 bus from PC (Personal Computer) machine

Abstract

The invention provides a device and a method for burning a serial number to a lower computer containing an RS (Recommended Standard) 485 bus from a PC (Personal Computer). The device comprises the PC, a burner and a lower computer, wherein the PC is provided with a burning unit and a USB (Universal Serial Bus) port; the burner comprises a USB / UART (Universal Asynchronous Receiver / Transmitter) conversion unit, a checkout unit and a first UART / RS485 conversion unit, wherein the USB / UART conversion unit, the checkout unit and the first UART / RS485 conversion unit are successively connected; the USB / UART conversion unit of the burner is connected with the USB port of the PC through a USB bus; the lower computer comprises a second UART / RS485 conversion unit and a serial number read-write unit with an I2C (Inter-Integrated Circuit) interface, wherein the UART / RS485 conversion unit and the serial number read-write unit are mutually connected; the second UART / RS485 conversion unit of the lower computer is connected with the first UART / RS485 conversion unit of the burner through the RS485 bus; and the I2C interface of the serial number read-write unit is connected with an EEPROM (Electrically Erasable Programmable Read-Only Memory) through an I2C bus. The device can burn the serial number to the lower computer containing the RS485 bus to the PC and can effectively verify whether burning is successful or not since the device is provided with a checkout program.

Description

technical field [0001] The invention belongs to the technical field of program burning, and in particular relates to a device and method for burning a serial number from a PC to a lower computer containing an RS485 bus. Background technique [0002] For storage semiconductor components, it is usually necessary to use a computer to write the programmed program through serial, parallel or USB connection and with a certain jig. The jig used in this process is a burner or a programmer. For example, an electronic product using the RS485 bus cannot directly program the serial number to the electronic product using the RS485 bus through the USB port of the PC. Because the RS485 bus cannot communicate with the USB bus of the PC directly, how can we directly pass the USB port of the PC? Burning serial numbers to electronic products using RS485 bus has become a problem that needs to be solved urgently. SUMMARY OF THE INVENTION [0003] Aiming at the problem that the PC cannot direc...

AI Technical Summary

Problems solved by technology

[0003] Aiming at the problem that a PC cannot directly burn a program to a lower computer with an RS485 bus, the present invention provides a device for burning a serial number from a PC to a lower computer with an RS485 bus, including:

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