Simple C program

We need a simple c program with proper comments and flow chart/algorithm for a control system (Climate).

## Deliverables

Develop a top-level control routine in 'C' language to run a control unit for a simple

climate-control system. The submission should be in source form.

C (programming)

The system already comes with simple functions defined that provide direct access to the hardware

sensors and controls:

GetAmbientTemperature (input, an unsigned integer value)

GetPanelButtons (input, an unsigned integer value)

SetBuzzer (output, 1/0 for on/off)

SetCooling (output, 1/0 for on/off)

SetFanSpeed (output, an unsigned integer from 0-5)

SetHeatingElement (output, 1/0 for on/off)

SetPanelDisplay (output, 23-bit bitfield as unsigned integer)

The GetAmbientTemperature value is an unsigned integer with range 0 to 800 representing

temperatures from 20 to 60 degrees Celsius with [url removed, login to view] precision.

The SetPanelDisplay value is a bit field controlling the LCD matrix:

0-3

Ambient Second digit

4-7

Ambient First digit

8

Ambient Minus sign

9-11

Fan display

12-15

Target Second digit

16-19

Target First digit

20

"Auto" mode matrix toggle

21

"Cool only" mode matrix toggle

22

"Heat only" mode matrix toggle

The digit matrices will be blank if set >9, while the others will display nothing when set to 0.

SetPanelDisplay and SetBuzzer will latch the last given value.

The GetPanelButtons result represents:

0 No button pressed

1 Power button

2 Target Temperature Up

3 Target Temperature Down

4 Mode button

The control panel buttons are not latched but are debounced

Mode is either "auto", "cool only" or "heat only":

? in "auto" mode, the unit should always try to achieve target temperature

? in "cool only" mode, the unit should only try to reduce the ambient temperature to target

? in "heat only" mode, the unit should only try to increase the ambient temperature to target

You should consider how a user would expect the unit to behave, both from an interface perspective

and also given a range of target and ambient temperatures. You should also consider sensible cold-

start behaviour.

Vestavěný software Softwarová architektura

Identifikační číslo projektu: #2749655

O projektu