ECET 340 (Devry) Expect Success/uophelp.com

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ECET 340 (Devry) Expect Success/uophelp.com

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ECET 340 (Devry) Expect Success/uophelp.com

• ECET 340 Entire Course (All ilabs and Homework)
  (Devry)
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• CET 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
•  

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ECET 340 (Devry) Expect Success/uophelp.com

• ECET 340 Week 1 HomeWork 1 (Devry)
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• 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. Write an
  instruction sequence to output the value 35 to
  PORT P. Use the C language only when writing your
  answer - no assembly language. (2 points)
•  

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ECET 340 (Devry) Expect Success/uophelp.com

• ECET 340 Week 1 iLab 1 (Devry)
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• 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.
•  

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ECET 340 (Devry) Expect Success/uophelp.com

• ECET 340 Week 2 HomeWork 2 (Devry)
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• 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
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ECET 340 (Devry) Expect Success/uophelp.com

• ECET 340 Week 2 iLab 2 (Devry)
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• ECET 340 Week 2 iLab 2

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ECET 340 (Devry) Expect Success/uophelp.com

• ECET 340 Week 3 HomeWork 3 (Devry)
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• 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)

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ECET 340 (Devry) Expect Success/uophelp.com

• ECET 340 Week 3 iLab 3 (Devry)
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• 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. 
•  

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ECET 340 (Devry) Expect Success/uophelp.com

• ECET 340 Week 4 iLab 4 (Devry)
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• 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.
•  

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ECET 340 (Devry) Expect Success/uophelp.com

• ECET 340 Week 5 HomeWork 5 (Devry)
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• 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

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ECET 340 (Devry) Expect Success/uophelp.com

• ECET 340 Week 5 iLab 5 (Devry)
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• 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 
•  

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ECET 340 (Devry) Expect Success/uophelp.com

• ECET 340 Week 6 HomeWork 6 (Devry)
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• 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? 
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ECET 340 (Devry) Expect Success/uophelp.com

• ECET 340 Week 6 iLab 6 (Devry)
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• ECET 340 Week 6 iLab 6

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ECET 340 (Devry) Expect Success/uophelp.com

• ECET 340 Week 7 HomeWork 7
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• 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 to the HCS12
  Port T pins 4, 5, 6, 7, with an armature
  (rotor) that has 12 poles (combined number of
  North and South magnetic poles). Notice how each
  step rotates the rotor 30 degrees, and notice the
  logic states on the Port T pins going from Step 1
  to Step 2. To rotate the rotor 90 degrees, you
  would need three (3) steps (see figure 5A for
  explanation).
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ECET 340 (Devry) Expect Success/uophelp.com

• ECET 340 Week 7 iLab 7 (Devry)
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• ECET 340 Week 7 iLab 7

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ECET 340 (Devry) Expect Success/uophelp.com

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