The Microcontroller Idea Book: Circuits, Programs and by Jan Axelson

By Jan Axelson

A hands-on advent to microcontroller venture layout with dozens of instance circuits and courses. provides useful designs to be used in info loggers, controllers, and different small-computer applications.About The Microcontroller notion Book:Complete circuit schematics and components lists so that you can simply construct the circuits yourselfDesign idea - with find out how to extend or alter the circuits shownExample software listings - for handy trying out of the circuitsConstruction and debugging suggestions - that can assist you get every little thing up and operating with no problemsVendor listings - so that you can locate the parts and different goods you wish in your projectsAbout the 8052-BASICExample circuits and courses within the e-book are in accordance with the preferred 8052-BASIC microcontroller, whose on-chip easy programming language makes it effortless to put in writing, run, and attempt your courses. With over a hundred instructions, directions, and operators, the BASIC-52 interpreter can do even more than different single-chip fundamentals. Its talents comprise floating-point math, string dealing with, and precise instructions for storing courses in EPROM, EEPROM, or battery-backed RAM.You can use any computing device with a serial port as a bunch approach for writing, importing, operating, debugging, and storing courses as you enhance a undertaking. whilst undertaking improvement is entire, you could disconnect the host laptop, and the 8052-BASIC will run your application instantly on bootup. you may also use an 8052-BASIC circuit as a improvement approach for importing and debugging assembled or compiled courses. As a member of the 8051 microcontroller relations, the 8052-BASIC makes use of a regular, populararchitecture.

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Extra info for The Microcontroller Idea Book: Circuits, Programs and Applications Featuring the 8052-Basic Single-Chip Computer

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BASIC-52 treats upper and lower-case characters the same. In most cases, spaces are ignored, so you can include them or not as you wish. Running a Program Here is a very simple program to try: 10 20 30 40 FOR I=1 to 10 PRINT I NEXT I END Enter each of the lines, including the line numbers. BASIC-52 automatically stores the program in RAM. To run the program, type RUN. You should see this: 1 2 3 4 5 6 7 8 9 10 To view the program lines, type LIST The Microcontroller Idea Book 39 Chapter 3 To erase the current program, type NEW To verify that the program no longer exists, type LIST You can change individual program lines by typing the line number, followed by a new statement: 10 FOR I=1 to 20 To erase a line, type the line number and press ENTER: 20 Getting Out of Trouble Occasionally, a programming error may cause a program to go into an endless loop or crash the system.

Be sure all components are oriented correctly. When all checks out, you’re ready to boot up BASIC-52. Booting BASIC-52 For the initial check, begin with everything powered down. I’ll use the term host computer, or host system, to refer to the personal computer, and target computer, or target system, to refer to the 8052-BASIC circuits. Included are some specific tips for users of Datastorm’s The Microcontroller Idea Book 35 Chapter 3 Figure 3-6. BASIC-52’s sign-on message and a simple program, using the Windows Terminal accessory for communications.

Unlike ROM, the CPU can write to RAM as well as read it. Any information stored in RAM is lost when power is removed from the chip. The 8052 has 256 bytes of RAM. BASIC-52 uses much of this for its own operations, with a few bytes available to users. I/O Ports I/O (Input/Output) Ports enable the 8052 to read and write to external memory and other components. The 8052 has four 8-bit I/O ports (Ports 0-3). As the name suggests, the ports can act as inputs (to be read) or outputs (to be written to).

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