JTAG MCU wireless emulator and method based on usb interface

Abstract

The invention relates to a USB interface-based JTAG one-chip microcomputer wireless emulator and method. The USB interface-based JTAG one-chip microcomputer wireless emulator comprises a wireless emulator debugging end and a wireless emulator target end. The USB interface-based JTAG one-chip microcomputer wireless simulation method comprises steps of (1) initializing a UART / UART information exchange controller, (2) initializing a timer, (3) forbidding timing operation, (4) initializing a UART0 interface, (5) initializing a UART1 interface, (6) selecting a function, (7) receiving a debugging order, (8) resetting timing constants, (9) turning to step (6), (10) turning to step (11) if data is allowed to send, otherwise turning to step (6), (11) sending data, (12) turning to step (13) if sending is finished, and turning to step (6) if not, (13) eliminating a UART0sending label, (14) turning to step (6), (15) arranging a UART0 sending label, (16) forbidding timing operation, (17) turning to step (6), (18) receiving data, (19) transferring data, and (20) turning to step (6).

Description

Technical field [0001] The present invention relates to a single-chip simulator, in particular to a JTAG single-chip wireless simulator and method based on a USB interface. Background technique [0002] With the development of single-chip technology and robotics, the robot control system based on single-chip microcomputer has been widely used. The development of single-chip microcomputer program is particularly important, and debugging is an indispensable link in the process of program development. [0003] Due to the limited resources of the single-chip microcomputer, developers cannot directly edit and debug the single-chip microcomputer program on the single-chip control system, which determines that the development of single-chip microcomputer programs can only adopt the cross-development method. The so-called cross-development method is that the integrated development environment of the MCU program runs on a general-purpose computer with rich hardware resources, which is usual...

AI Technical Summary

Problems solved by technology

[0011] 1. Does not support third-party integrated development environment;

[0012] 2. In the description of the prior art, there is no content about the integrated development environment of the single-chip microcomputer program provided by the third party

from figure 1 and figure 2 , image 3 It is inferred from the comparison that the existing technology does not support the third-party integrated development environment due to the hot-swappable nature of USB devices.

The cost and time spent on writing such integrated development environment software occupy most of the total cost and time spent on developing an emulator;

[0013] 3. Does not support online replacement of JTAG protocol conversion program

Prior art (1) statement in the document is only effective to the LM3S series single-chip microcomputer of TI company, and this is only because the JTAG protocol of the single-chip microcomputer that LM3S series is released when the document is published is the same

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