Embedded Systems Design with the Atmel AVR Microcontroller by Steven Barrett, Mitchell Thornton

By Steven Barrett, Mitchell Thornton

This textbook presents practising scientists and engineers a complicated therapy of the Atmel AVR microcontroller. This e-book is meant as a follow-on to a formerly released ebook, titled Atmel AVR Microcontroller Primer: Programming and Interfacing. the various content material from this prior textual content is retained for completeness. This ebook will emphasize complicated programming and interfacing talents. We concentrate on method point layout which includes a number of interacting microcontroller subsystems. the 1st bankruptcy discusses the method layout technique. Our technique is to supply the talents to quick wake up to hurry to function the the world over renowned Atmel AVR microcontroller line by way of constructing platforms point layout talents. We use the Atmel ATmega164 as a consultant pattern of the AVR line. the data you achieve in this microcontroller could be simply translated to each different microcontroller within the AVR line. In succeeding chapters, we disguise the most subsystems aboard the microcontroller, supplying a brief thought part by means of an outline of the comparable microcontroller subsystem with accompanying software program for the subsystem. We then supply complicated examples workout a few of the positive factors mentioned. In all examples, we use the c language. The code supplied will be comfortably tailored to the big variety of compilers on hand for the Atmel AVR microcontroller line. We additionally comprise a bankruptcy describing how one can interface the microcontroller to a wide selection of enter and output units. The booklet concludes with numerous unique process point layout examples utilising the Atmel AVR microcontroller. desk of Contents: Embedded structures layout / Atmel AVR structure review / Serial verbal exchange Subsystem / Analog to electronic Conversion (ADC) / Interrupt Subsystem / Timing Subsystem / Atmel AVR working Parameters and Interfacing / approach point layout

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Additional info for Embedded Systems Design with the Atmel AVR Microcontroller (Synthesis Lectures on Digital Circuits and Systems)

Example text

0 1 2 3 4 5 6 7 8 9 : ; < = > ? The “0x” indicates hexadecimal notation in the C programming language. 2. 2 45 SERIAL USART The serial USART is used for full duplex (two way) communication between a receiver and a transmitter. This is accomplished by equipping the ATmega164 with independent hardware for the transmitter and the receiver. The USART is typically used for asynchronous communication. That is, there is not a common clock between the transmitter and receiver to keep them synchronized with one another.

As previously discussed, the operating speed of the microcontroller is set by the time base chosen for the processor. Since faster microcontroller operation is not always the best option, the system designer must determine the optimal speed of microcontroller operation for a given application. The microcontroller’s power consumption is directly related to operating speed. That is, the faster the operating speed of the microcontroller the higher its power consumption. This becomes especially critical in portable, battery-operated embedded systems applications.

Pop up window “Welcome to AVR Studio” should appear. ” 8. ” It looks like the silhouette of an integrated circuit. It is on the second line of the toolbar about half way across the screen. 8. 8: Programming the ATmega164 with the STK500. 37 38 CHAPTER 2. ATMEL AVR ARCHITECTURE OVERVIEW 9. This should bring up a STK500 pop up window with six tabs (Program, Fuses, Lockbits, Advanced, Board, Auto). At the bottom of the Program tab window verify that the STK500 was autodetected. Troubleshoot as necessary to ensure STK500 was autodetected by AVR Studio.

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