CSharp-DevTest

A short c# coding challenge to access a developer's ability to code to a provided specification, as well as fix any existing bugs already present in the code.

What You're Trying To Do

The task is to write a clean, easy-to-read console application. This console application should convert each pressure data string in Pressure_As_ADC_Data_Strings.txt into a voltage, then into kPa using the information, data structure breakdown and formulas found below.

Beware, a previous developer started the work but did not finish, and you have to continue it.

• Pressure_As_ADC_Data_Strings.txt contains the pressure data strings.
• Pressure_As_Voltages.txt is where the voltages are to be written to, at the precision of 5 decimal places. One value per line.
• Pressure_As_kPa.txt is where the final pressure values in kPa are to be written to, at the precision of 2 decimal places. One value per line.

Pressure ADC Data Strings To Integer Conversion

The following is how the string input is converted to a pressure voltage for use:

String input is 7 characters: <SEQUENCE NUMBER><20 BIT PRESSURE DATA AS 5 CHARACTERS><\r>

So, if the string value is 0FFFF, and the Sequence Number is 0, the output is 00FFFF\r

So, data range is: X00000\r – XFFFFF\r

Where X is the Sequence Number in the range {0,1,2,3,4,5,6,7,8,9,A,B,C,D,E,F}

When converting the HEX pressure reading to a voltage, remove the Sequence Number from the pressure string input before converting it to an integer.

Pressure Integer Data To Voltage Conversion Formula

Once converted to an integer, conversion to a voltage uses the following formula:

PressureAsVoltage = (PressureAsInt * (RawHighVoltage - RawLowVoltage) / ScaleHighAsInt) - VoltageOffset
Formula values being:
RawLowVoltage = 0.0 V
RawHighVoltage = 5.0 V
ScaleHighAsInt = 1048575
VoltageOffset = 0.0 V
1048575 is the highest possible value in decimal form from the pressure string readings. 
(HEX FFFFF = 1048575)

Pressure Raw Voltage to Pressure (kPa) Conversion Formula

Pressure = ((RawVoltage - RawLowVoltage) / (RawHighVoltage - RawLowVoltage)) * (ScaleHigh - ScaleLow)
Formula values being:
RawLowVoltage = 0.0 V
RawHighVoltage = 5.0 V
ScaleLow = 0.0 kPa
ScaleHigh = 68947.573 kPa

What You're Going To Need

1. A git client
2. An IDE.
   • Visual Studio 2022.
3. .NET 7

How To Get Started

1. Clone this repository to your computer (https://github.com/Pacesetter/CSharp-DevTest.git)
2. Open the project in Visual Studio 2022
3. This should kick off a dotnet restore automatically, but if not manually run that in a command prompt
4. Use Pressure_As_ADC_Data_Strings.txt and the above instructions as a starting point.
5. This challenge is designed to be completed in 1-2 hours.
6. When you're done, submit your code by zipping up your entire solution, and email it to me.