CS-328 takes Southern New Hampshire University students from software running on a computer to software controlling hardware in the physical world.
SNHU's catalog describes the course as examining key aspects of embedded system design, including microcontroller selection, assembly-language programming, the use of higher-level languages for system development, interfacing, transducers and key supporting analog circuits. It is a 3-credit undergraduate course, with CS-110 or CS-114 as the prerequisite.
Students coming from pure software often find it challenging because timing, voltage and memory limits suddenly matter, and bugs can be electrical as well as logical.
Course at a Glance
| Item | Details |
|---|---|
| University | Southern New Hampshire University (SNHU) |
| Course code | CS-328 |
| Level | Undergraduate, 3 credits |
| Prerequisite | CS-110 or CS-114 |
| Subject area | Embedded systems |
| Typical work | Microcontroller programs, design comparisons, interfacing exercises, short reports |
What CS-328 Covers
| Topic | In plain language |
|---|---|
| Microcontroller selection | Choosing a chip by speed, memory, power, peripherals and cost |
| Assembly language | Programming close to the hardware, instruction by instruction |
| Higher-level languages | Using languages such as C for most embedded development |
| Interfacing | Connecting the microcontroller to other devices |
| Transducers | Sensors and actuators that convert between physical and electrical signals |
| Analog circuits | Supporting circuits such as voltage dividers, filters and amplifiers |
Key Concepts Explained
Choosing a Microcontroller
Selection is a trade-off. A design brief rarely has one right answer, so justify the choice against the requirements.
Example: A battery-powered temperature logger needs very low power, an analog-to-digital converter, a few kilobytes of memory and a serial interface. A small low-power microcontroller fits better than a fast, power-hungry one, even though the faster chip has more features.
Polling Versus Interrupts
Polling checks a device repeatedly in a loop; interrupts let the hardware signal the processor when something happens. Interrupts save power and respond faster, but handlers must be short and careful with shared data.
Analog to Digital Conversion
Sensors often output a voltage. An analog-to-digital converter (ADC) turns it into a number based on its resolution and reference voltage.
Example: A 10-bit ADC with a 3.3 V reference gives values from 0 to 1023. A reading of 233 corresponds to about 233 / 1023 × 3.3 ≈ 0.75 V. For a sensor that outputs 500 mV at 0 °C plus 10 mV per °C, that is (0.75 − 0.5) / 0.01 ≈ 25 °C. The offset and scale always come from the sensor's datasheet.
Assembly and C Side by Side
Assembly shows exactly what the processor does, which helps with timing-critical code and understanding registers. C is faster to write and easier to maintain. Many systems use C for most code and assembly only where precise control is needed.
Communication Interfaces
Common serial interfaces include UART (simple, two devices), I2C (two wires, many devices with addresses) and SPI (faster, more wires). Choosing one depends on speed, distance and the number of devices.
Typical Assignments and How to Approach Them
| Assignment type | What it tests | How to approach it |
|---|---|---|
| Microcontroller program | Controlling hardware | Build in stages: blink, read input, then combine |
| Design comparison | Selection reasoning | Compare options in a table against requirements |
| Interfacing task | Connecting devices | Read the datasheet and confirm wiring before coding |
Planning Programs as State Machines
Embedded programs often run forever, reacting to inputs. A finite state machine makes that behavior explicit: the system is always in one state, and events move it to another.
Example: A thermostat with states Idle, Heating and Fault. In Idle, if temperature drops below the set point, move to Heating and switch on the heater. In Heating, if temperature reaches the set point plus a small margin, return to Idle. In any state, if the sensor reading is out of range, move to Fault and switch the heater off.
Drawing the states and transitions before coding exposes missing cases, such as what happens when a button is pressed during a fault. The margin in the example, called hysteresis, stops the heater switching on and off rapidly around the set point.
Power and Memory Constraints
Microcontrollers may have only kilobytes of memory and run on batteries. Sleep modes, interrupts and careful use of variables all matter in ways that rarely come up in desktop programming.
Where Students Get Stuck
- Skipping the datasheet. Pin functions, voltages and register settings live there.
- Timing bugs. Delays that block the program can make it miss inputs; consider timers or interrupts.
- Electrical mistakes. Wrong voltage levels or missing pull-up resistors look like software bugs.
- Too much at once. Test each peripheral alone before combining them.
Study Tips for CS-328
- Keep a lab notebook of wiring, settings and results for every exercise.
- Use a state machine diagram to plan programs with several modes.
- Learn the basic electrical formulas (Ohm's law, voltage dividers) early.
How We Help with CS-328
Send the project brief, code, wiring notes and feedback. An embedded systems tutor can explain concepts, help you debug or prepare a model design and commented code to study.
GradeEssays is independent of Southern New Hampshire University. Our work is tutoring and reference help; you write and submit your own work under SNHU's academic integrity policy.
Make Sense of Your CS-328 Work
Share the project files and feedback. An embedded systems tutor prepares a model design and explanation you can learn from.
Start My CS-328 HelpFree revisions · Full refund if late · Written from scratch for your order
Frequently Asked Questions
SNHU lists CS-110 Fundamentals of Programming or CS-114 Intro to Software Engineering.
SNHU lists it as a 3-credit undergraduate course.
Yes. SNHU's description includes assembly-language programming as well as higher-level languages.
The catalog does not specify; your course materials will name the board or simulator.
A device that converts one form of energy to another, such as a sensor turning temperature into voltage or a motor turning electrical signals into motion.
No. We provide tutoring and custom solutions for study; you submit your own work.