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ECET 340 Week 1 HomeWork 1 ECET 340 Week 1 iLab 1 ECET 340 Week 2 HomeWork 2 ECET 340 Week 2 iLab 2 ECET 340 Week 3 HomeWork 3 ECET 340 Week 3 iLab 3 ECET 340 Week 4 HomeWork 4 ECET 340 Week 4 iLab 4 ECET 340 Week 5 HomeWork 5 ECET 340 Week 5 iLab 5 ECET 340 Week 6 HomeWork 6 ECET 340 Week 6 iLab 6 ECET 340 Week 7 HomeWork 7 ECET 340 Week 7 iLab 7 – PowerPoint PPT presentation

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Title: ECET 340 Reading feeds the Imagination/uophelpdotcom


1
ECET 340 Reading feeds the Imagination/uophelpdotc
om
  • For more course tutorials visit
  • www.uophelp.com

2
ECET 340 Entire Course (All ilabs and Homework)
(Devry)
  • For more course tutorials visit
  • www.uophelp.com
  •  
  •  
  • ECET 340 Week 1 HomeWork 1
  • ECET 340 Week 1 iLab 1
  • ECET 340 Week 2 HomeWork 2
  • ECET 340 Week 2 iLab 2
  • ECET 340 Week 3 HomeWork 3
  • ECET 340 Week 3 iLab 3
  • ECET 340 Week 4 HomeWork 4
  • ECET 340 Week 4 iLab 4
  • ECET 340 Week 5 HomeWork 5
  • ECET 340 Week 5 iLab 5
  • ECET 340 Week 6 HomeWork 6
  • ECET 340 Week 6 iLab 6
  • ECET 340 Week 7 HomeWork 7
  • ECET 340 Week 7 iLab 7

3
ECET 340 Week 1 HomeWork 1 (Devry)
  • For more course tutorials visit
  • www.uophelp.com
  •  
  •  
  •  
  • 1. Give three examples each of internal and extern
    al peripheral devices as referenced to the HCS12
    microcontroller and not an entire PC. (2
    points)2. Given the requirements of each
    signals destination must match the capabilities
    of the signals source, name some of the
    electrical signal parameters that must be
    considered when designing an interface between
    two different hardware components. (2 points)3.
    Write down the instructions needed to program
    PORT A for pins PA7, PA4-PA0 as inputs and
    PA6-PA5 as outputs. Answer should be a valid C
    language statement. (2 points)

4
ECET 340 Week 1 iLab 1 (Devry)
  • For more course tutorials visit
  • www.uophelp.com
  •  
  • OBJECTIVES
  • To become familiar with Microcontroller MC9S12
    parallel ports and how simple input and output
    devices are interfaced through them.
  • To learn how to program I/O instructions in C
    language.
  • To learn how to organize a program to read data
    from input ports, process the data, and display
    the result on a simple output device.
  •  

5
ECET 340 Week 2 HomeWork 2 (Devry)
  • For more course tutorials visit
  • www.uophelp.com
  •  
  • 1. Where does program control transfer to when an
    interrupt occurs? 2 points
  • 2. Which one of the following Interrupts has
    highest priority? 2 points
  • 3. RAM Vector table addresses 3E52 belongs to
    which interrupt? 2 points
  • 4. Before exiting an ISR, the programmer should
    use which command? 2 points
  • 5. In which one of the following sequences is the
    stack pulled by rti? 3 points
  • 6. Given the starting address for the TC0
    Interrupt is to become 5000. Write the assembly
    instruction necessary to place this ISR address
    into the interrupt vector table and then unmask
    the interrupt (assembly only). 3 points
  •  

6
ECET 340 Week 2 iLab 2 (Devry)
  • For more course tutorials visit
  • www.uophelp.com
  •  
  • ECET 340 Week 2 iLab 2

7
ECET 340 Week 3 HomeWork 3 (Devry)
  • For more course tutorials visit
  • www.uophelp.com
  •   
  •  
  • 1. Sketch a circuit that can be used to debounce
    a pushbutton and explain how it works. (4 points
    max)
  • 2. In Figure 7.32 on page 339 of the Huang
    textbook, if the row has and the columnsare ,
    which key is pressed? (2 points max)
  • 3. In Figure 7.32 on page 339 of the Huang
    textbook, explain why the 10k? resistors ties to
    VCC are required. (2 points max)

8
ECET 340 Week 3 iLab 3 (Devry)
  • For more course tutorials visit
  • www.uophelp.com
  •  
  • SOLVED ECET 340 iLAB3
  • OBJECTIVES
  • To learn the basic operation of a keypad.
  • To understand how to interface a keypad to a
    microprocessor.
  • To learn how to program a keypad driver in C
    language.
  • To learn how to program a keypad activated
    interrupt that identifies the key being pressed
    and displays or otherwise returns its value to
    the main program

9
ECET 340 Week 4 HomeWork 4 (Devry)
  • For more course tutorials visit
  • www.uophelp.com
  •     
  • 1. Determine the conversion time for an ADC0804
    (8-bit), where 66 clocks per bit are required, if
    its clock frequency is 50 kHz.2. If an 8-bit
    SAR has Vref 10 V, what is the binary value for
    an input voltage of 7.28 V?3. What is the
    percent error for the binary answer found in
    Problem 2?4. Given an 24 MHz bus speed. Write
    down the line(s) of instruction which set the
    ATD1 unit for 2MHz conversion frequency, 10-bit
    resolution and 8 A-to-D clocks per sample time.

10
ECET 340 Week 4 iLab 4 (Devry)
  • For more course tutorials visit
  • www.uophelp.com
  •    
  • I. OBJECTIVES
  • To learn how to use A-to-D converters to digitize
    signals from analog input devices.
  • To learn how to write a C language program that
    samples the data from an analog device, digitizes
    it and formats it for output on an LCD.
  • To become more proficient in programming displays
    for real-time operation.
  •  

11
ECET 340 Week 5 HomeWork 5 (Devry)
  • For more course tutorials visit
  • www.uophelp.com
  •  .    
  • 1. Explain, briefly, why an analog restoring
    filter is sometimes used at the output of a
    DAC.2. Given Iref 2 mA for a DAC1408 IC, find
    Iout for the input 1110 11103. Find the number
    of discrete voltages output by a 12-bit DAC. Show
    work.4. Use the internet to locate the data
    sheet for an MC1408 DAC. From it find, for the
    MC1408-7 version, the following
  • a. The settling time
  • b. Accuracy at full scale output current (1.99
    mA), 25ºC
  • c. Output current range when -7V ltvee""gtlt
    -15v"" is"" used.""gt
  • 5. Assume that an MC1408 DAC is attached to Port
    T of an HC12 Microprocessor as shown below.
    Verify that the program below outputs 8 different
    values to the DAC and determine

12
ECET 340 Week 5 iLab 5 (Devry)
  • For more course tutorials visit
  • www.uophelp.com
  •  
  • Scenario/Summary
  • This week's lab covers two areas, conversion of
    digital HCS12 
  • signals to an analog format, and the use of a
    Serial Peripheral Interface (SPI) 
  • to transfer data, and commands between the HCS12,
    and the DAC 
  • peripheral. 
  • Deliverables
  • For this lab, the deliverables include the cover
    sheet, 
  • filled-in sections of the lab report, photographs
    (online), or instructor 
  • sign-offs (onsite), and answers to the questions.
    The cover sheet must be 
  • completed in typed format. 
  • L A B S T E P S 
  •  

13
ECET 340 Week 6 HomeWork 6 (Devry)
  • For more course tutorials visit
  • www.uophelp.com
  •   
  • 1. What are the four main functions of the HC12
    Timer unit?2. Two input capture events occur at
    counts 0x1037 and 0xFF20 of the free-running
    counter. How many counts (in decimal) have
    transpired between these two events?3. What is
    the maximum time possible before the free-running
    counter overflows when the e MHz?4. Two input
    capture events occur at 0x1037 and 0x002A. If the
    prescaler bits PR210 are set to 101 and the e
    clock is 24 MHz, how much time as transpired
    between the two events? 
  •  

14
ECET 340 Week 6 iLab 6 (Devry)
  • For more course tutorials visit
  • www.uophelp.com
  •     
  • ECET 340 Week 6 iLab 6

15
ECET 340 Week 7 HomeWork 7
  • For more course tutorials visit
  • www.uophelp.com
  •    
  •  
  • 1. The movable part of the solenoid is the 2
    points
  • 2. Why is the 6N139 optoisolator used in the
    interfaces to devices such as large motors? 2
    points
  • 3. Calculate the number of steps per revolution
    for a stepper motor with a step angle of 7.5. 2
    points
  • 4. How is stepper motor speed controlled? State
    any two ways a program can do this. 2 points
  • 5. For this problem, you should look at Figure 5A
    on the next page as a physical example of a
    stepper motor. It is an example of a stepper
    motor with four (4) magnetic windings which are
    connected via an interface circuit

16
ECET 340 Week 7 iLab 7 (Devry)
  • For more course tutorials visit
  • www.uophelp.com
  •    ECET 340 Week 7 iLab 7

17
ECET 340 Reading feeds the Imagination/uophelpdotc
om
  • For more course tutorials visit
  • www.uophelp.com
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