Week 2: Sensor Development Kit and Prototyping

Question 1

Which of the following files are stored in the Workplace Explorer Module of the Cypress PSOC Creator 4 workspace?

All of the source code that relates to pins

All of the files for the hardware schematic

All of the files related to your project

All of the files for the hardware schematic and source code solely related to the components you placed in the schematic

All of the source code that relates to pins, ADC’s, and DAC’s

Answer 1

All of the files related to your project

Question 2

Under which circumstances will you need to use an oscilloscope or an nScope with your PSOC system? There are multiple correct answers.

To study the sensor noise in a system as manifested by the digital signal of the sensor

To study the sensor noise in a system after a SAR ADC

To study the low frequency sensor noise in a system before and after an RC filter.

To study the sensor noise in a system before and after any type of purely hardware filter.

Answer 2

You would need to use an nScope or oscilloscope with PSoC:

• to study the low frequency sensor noise in a system before and after an RC filter
• to study the sensor noise in a system before and after any type of purely hardware filter

Question 3

What code is stored in the PSoC file main.c when you first start your project?

Answer 3

No executable code because you haven’t created the project yet.

Question 4

Which of the following is not an on-board component, available for selection from the Cypress Component Catalog?

Amplifier, Digital Pin, Comparator, 16 GB Memory, DAC

Answer 4

16 GB memory is not an on-board component.

Question 5

Which of the following is not an off-chip component, available for selection from the Cypress Component Catalog?

Battery, Fuse, Motor controller, Thermocouple, None of the aboce

Answer 5

Motor controller is not an off-chip component.

Question 6

Which itmes are configurable for a digital pin in the PSoC system?

Theshold (CMOS, LVTTL, VDDIO, etc.)

Sync Mode (Double-sync, transparent)

Interrupt (Rising edge, falling edge, etc.)

Answer 6

All of these options are configurable for a digital pin in the PSoC system.

Question 7

How would you compare the resolution of the PSoC Delta Sigma ADC to that of the PSoC SAR ADC?

Answer 7

The Delta Sigma ADC resolution can be configured between 18 and 20 bits in intervals of 1, while that of the SAR ADC can be configured to 8, 10, 12 bits.

Question 8

How do you connect a pin on the schematic to a physical pin on the PSoC development kit?

Answer 8

Pin mapping is done in the pins tab (selected from workspace explorer). You click on the “Port” and “Pin” drop down, and select the appropriate port and pin number. Then the physical pins are connected to the pins in the schematic.

Question 9

What is the fastest sweep rate of the nScope?

Answer 9

The fastest sweep rate of the nScope is 10 microseconds/div. This is an obvious difference between the nScope and a typical engineering lab oscilloscope.

Question 10

Which one of these items are commonly used LCD API in the PSoC system (assume the “instance name” has been configured to be just “LCD” on the schematic)?

Use Cydelay () or other methods to make sure you don’t write to the LCD too fast for it to respond

Write a string of characters (contained in double quotes) to the LCD using LCD_PrintString ()

Insert the function LCD_Start () into main.c

Set where the cursor is on the LCD using the function LCD_Position (0,0)

All of the above

Answer 10

All of the above