Analog Interfacing to Embedded Microprocessor Systems. Real by Stuart Ball

By Stuart Ball

  • Provides hard-to-find details on interfacing analog units and applied sciences to the only electronic international of embedded microprocessors. provides the reader the perception and viewpoint of a true embedded structures layout engineer, together with guidance that just a hands-on specialist may comprehend. Covers very important concerns for either and software program systmes while linking analog and electronic units. -Embedded expertise ...a complete resource on interfacing the true global to microprocessors should still end up helpful to embedded structures engineers, scholars, technicians, and hobbyists. a person eager about connecting the analog surroundings to their electronic machines, or troubleshooting such connections will locate this booklet in particular invaluable. - Embedded expertise more often than not, for all of the sections, there are many uncomplicated diagrams and in addition the mathematics is saved to an easy point. ...I like this e-book and suggest it as an advent to the topic for domestic use, scholars and SW Engineers. - Chris Hills within the ACCU journal CVu ...there are lots of easy diagrams and likewise the math is stored to an easy point. i love this booklet and suggest it as an advent to the topic for domestic use, scholars and engineers. -Chris Hills within the ACCU journal CVu

Content:
Preface

, Page ix
Introduction

, Page xi
1 - approach Design

, Pages 1-12
2 - Analog-to-Digital Converters

, Pages 13-46
3 - Sensors

, Pages 47-90
4 - Time-Based Measurements

, Pages 91-106
5 - Output keep an eye on Methods

, Pages 107-143
6 - Solenoids, Relays, and different Analog Outputs

, Pages 145-169
7 - Motors

, Pages 171-213
8 - Electromagnetic Interference

, Pages 215-223
9 - High-Precision Applications

, Pages 225-241
10 - common Interfaces

, Pages 243-246
11 - Analog Toolbox

, Pages 247-273
Appendix A - Opamp Basics

, Pages 275-286
Appendix B - Pulse Width Modulation

, Pages 287-297
Appendix C - worthwhile URLs

, Pages 299-300
Appendix D - Python Code for bankruptcy eleven; Excel info for bankruptcy 4

, Pages 301-306
Glossary

, Pages 307-309
Index

, Pages 311-322

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Additional resources for Analog Interfacing to Embedded Microprocessor Systems. Real World Design

Example text

T h e limit t e m p e r a t u r e can be p r o g r a m m e d via the I2C bus. 6 shows a slotted optical switch. An LED is m o u n t e d in a plastic housing, facing a phototransistor. A gap separates the two, so if s o m e t h i n g moves into the gap, it blocks the light path between the LED and the phototransistor. Slotted switches are often used to detect m o t o r speed by placing a slotted wheel on the m o t o r shaft; as the shaft rotates, it alternately blocks and unblocks the light path.

64V, or 1 0 . 5 = 5 . 64 = V r R f / R h ) for resistor values. 5 V, as shown on the schematic. Note that this is the reference voltage only for the t h e r m i s t o r and o p a m p circuit; the ADC still uses a 5 V reference. We have two equations and three resistors, so we have to choose the value of one resistor. 2 K. 65 V. 467 V 227 111 74 23 Analog Interfacing to Embedded Microprocessor Systems You need the chart because the thermistor isn't linear, so the software needs to know what ADC value to expect for a given temperature.

T h e M O D E pin d e t e r m i n e s whether data is being written or read (1 = read, 0 = write). T h e DATA pin is a bidirectional signal, the SCLK signal clocks data into and out of the device, and the LOAD pin is used after a write to clock the write data into the internal registers. T h e clocked serial interface of the MAX1101 is similar to SPI, but because there is no chip select signal, multiple devices cannot share the same data/clock bus. Each MAX1101 (or similar device) needs four signals from the processor for the interface.

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