Problems needing attention in the development and debugging of Yingguang single chip microcomputer

Single chip microcomputer Problems needing attention in development and debugging

1、 Use the single chip microcomputer without external bus

· It is the most orthodox use mode of single chip microcomputer

· Conform to small 、 Simple 、 reliable 、 The original intention of cheap MCU design

· Products with closed bus are the most reliable

2、 Use single chip microcomputer C Language programming

* C Language is concise 、 Efficient 、 And the most close to hardware high-level programming language

* 90 In the early s, single chip computers C Language has matured into a professional high-level language , There should be no more worries

* At present, when manufacturers launch new single-chip products, they are supporting C Language compiler

3、 In the use 、 High grade SCM simulation tool

* Only in the middle 、 Only high-end simulation tools can simulate the bus closed MCU

*  Emulator You have to use band-out chip or hooks chip

* It should support debugging of high-level languages , Provide view and modification of all data types

* Support multiple companies Software The object code format produced by the company's assembly and compilation

* The starting requirement of the mid-range simulator is to solve at least the above problems 3 The first difficulty and part of it have been solved 4 A difficulty . High end simulators have higher requirements .

* in 、 The man-machine interface of high-end simulator has four grades ：DOS Simple command line and batch file under ,DOS Window command line under ,Borland Style DOS Window menu ,Microsoft Style WINDOWS/WIN95 Window menu

4、 Integrated development platform

* edit — assembly / compile — Connect / location — debugging — Loading the target system is a continuous process

* Full screen editing , Modify in place , What you see is what you get ; Cross file whole block clipping Technology ; Color identification text, etc

* Use engineering （project） technology : All source files of the project at one time 、 The header file 、 The user library file is sent to the project manager , Unified management compilation / Compile and connect / location

* Use MAKE technology ： Automatic recognition assembler / compiler ; Each debugging cycle only does incremental assembly / Compile and connect / location

* When some files are destroyed , Use build Technology jumps out MAKE loop , Recompile comprehensively / Compile and connect / location

* Errors and warnings are automatically located 、 Clear errors are automatically corrected

* Extended run type （ Let it go 、 Animated operation , When the cursor terminates 、 Terminate before function exit 、 Terminate after function exit ）

* Extended single step type （ Command step 、 Statement step 、 Function step ）

* Extended breakpoint type （ Instruction breakpoints 、 Statement breakpoint 、 Loop breakpoints 、 Content breakpoints 、 Conditional breakpoints ）

* The simulator replaces the simulator for virtual debugging without target machine