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Furkat [3]
3 years ago
5

2. From the listing code, please give the block of line numbers for code which are concerned with the following: A) Main functio

n initialization of values B) Main function idle loop C) Main function schedule loop has already been moved to the ISR, but give those numbers too.
Computers and Technology
1 answer:
arsen [322]3 years ago
7 0

Answer:

Complete question is:

When the C-language code is generated, -1 is used to create the initialization state for each of the Tick

functions.

The challenge is if this code is used with C++ compiler, there is an incorrect mix between integer and

the enum data types.

1. Take the generated C code, edit it, and

replace the -1 state with an enum data type state

so it will

compile properly.

2. Replace the integer notation for the call and return arguments for Tick functions where they should

also be the enum data types.

2. From the listing lines of code, please give the line numbers for code which are concerned with the

following:

A)

Main function initialization of values

B)

Main function idle loop

C)

Main function schedule loop has already been moved to the ISR, but give those numbers too.

This action is required when moving this state machine model to a C++ GUI system.

Submit the C code with the corrections made

and this is my code

/*

This code was automatically generated using the Riverside-Irvine State machine Builder tool

Version 2.8 --- 6/23/2015 16:19:15 PST

*/

#include "rims.h"

/*This code will be shared between state machines.*/

unsigned char TimerFlag = 0;

void TimerISR() {

TimerFlag = 1;

}

enum BL_States { BL_LedOff, BL_LedOn } BL_State;

TickFct_BlinkLeds() {

/*VARIABLES MUST BE DECLARED STATIC*/

/*e.g., static int x = 0;*/

/*Define user variables for this state machine here. No functions; make them global.*/

switch(BL_State) { // Transitions

case -1:

BL_State = BL_LedOff;

break;

case BL_LedOff:

if (1) {

BL_State = BL_LedOn;

}

break;

case BL_LedOn:

if (1) {

BL_State = BL_LedOff;

}

break;

default:

BL_State = BL_LedOff;

} // Transitions

switch(BL_State) { // State actions

case BL_LedOff:

B0= 0;

break;

case BL_LedOn:

B0 = 1;

break;

default: // ADD default behaviour below

break;

} // State actions

}

enum TL_States { TL_T0, TL_T1, TL_T2 } TL_State;

TickFct_ThreeLeds() {

/*VARIABLES MUST BE DECLARED STATIC*/

/*e.g., static int x = 0;*/

/*Define user variables for this state machine here. No functions; make them global.*/

switch(TL_State) { // Transitions

case -1:

TL_State = TL_T0;

break;

case TL_T0:

if (1) {

TL_State = TL_T1;

}

break;

case TL_T1:

if (1) {

TL_State = TL_T2;

}

break;

case TL_T2:

if (1) {

TL_State = TL_T0;

}

break;

default:

TL_State = TL_T0;

} // Transitions

switch(TL_State) { // State actions

case TL_T0:

B5 = 1;

B6 = 0;

B7 = 0;

break;

case TL_T1:

B5 = 0;

B6 = 1;

B7 = 0;

break;

case TL_T2:

B5 = 0;

B5 = 0;

B5 = 1;

break;

default: // ADD default behaviour below

break;

} // State actions

}

int main() {

B = 0; //Init outputs

TimerSet(1000);

TimerOn();

BL_State = -1;

TL_State = -1;

while(1) {

TickFct_BlinkLeds();

TickFct_ThreeLeds();

while (!TimerFlag);

TimerFlag = 0;

}

}

Answer is:

#include "rims.h"

/*This code will be shared between state machines.*/

unsigned char TimerFlag = 0;

void TimerISR() {

TimerFlag = 1;

}

enum BL_States { BL_LedOff, BL_LedOn, BL_LedOnOff } BL_State;

TickFct_BlinkLeds() {

/*VARIABLES MUST BE DECLARED STATIC*/

/*e.g., static int x = 0;*/

/*Define user variables for this state machine here. No functions; make them global.*/

switch(BL_State) { // Transitions

case BL_LedOnOff:

BL_State = BL_LedOff;

break;

case BL_LedOff:

if (BL_LedOn) {

BL_State = BL_LedOn;

}

break;

case BL_LedOn:

if (true) {

BL_State = BL_LedOff;

}

break;

default:

BL_State = BL_LedOff;

} // Transitions

switch(BL_State) { // State actions

case BL_LedOff:

B0= 0;

break;

case BL_LedOn:

B0 = 1;

break;

default: // ADD default behaviour below

break;

} // State actions

}

enum TL_States { TL_T0, TL_T1, TL_T2 } TL_State;

TickFct_ThreeLeds() {

/*VARIABLES MUST BE DECLARED STATIC*/

/*e.g., static int x = 0;*/

/*Define user variables for this state machine here. No functions; make them global.*/

switch(TL_State) { // Transitions

case BL_LedOnOff:

TL_State = TL_T0;

break;

case TL_T0:

if (1) {

TL_State = TL_T1;

}

break;

case TL_T1:

if (true) {

TL_State = TL_T2;

}

break;

case TL_T2:

if (true) {

TL_State = TL_T0;

}

break;

default:

TL_State = TL_T0;

} // Transitions

switch(TL_State) { // State actions

case TL_T0:

B5 = 1;

B6 = 0;

B7 = 0;

break;

case TL_T1:

B5 = 0;

B6 = 1;

B7 = 0;

break;

case TL_T2:

B5 = 0;

B5 = 0;

B5 = 1;

break;

default: // ADD default behaviour below

break;

} // State actions

}

int main() {

B = 0; //Init outputs

TimerSet(1000);

TimerOn();

BL_State = -1;

TL_State = -1;

while(1) {

TickFct_BlinkLeds();

TickFct_ThreeLeds();

while (!TimerFlag);

TimerFlag = 0;

}

}

Explanation:

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#include <iostream>  //to use input output functions

using namespace std;   //to identify objects like cin cout

int main(){  //start of main function

       int MinFloors = 1;  //minimum number of floors

       int MinRooms  = 10; //minimum number of rooms

       int NoOfFloors;  //stores number of floors

       int NoOfRooms;  //stores number of rooms

       int OccupiedRooms;  //stores number of rooms occupied

       double TotalRooms=0, TotalOccupied=0;   //stores computed total number of rooms and total number of occupied rooms

       cout<<"How many floors does the hotel have? ";  //prompts user to enter number of floors

       do{  //iterates until the user enters valid number of floors

           cout<<"(cannot be less than "<<MinFloors<<"): ";  //error message

           cin >>NoOfFloors;  //reads number of floors from user

       }while(NoOfFloors<MinFloors);  //repeats as long as number of floors is less than minimum number of floors

       for(int floor=1; floor <= NoOfFloors; floor++){    //iterates through the floors to skip third iteration

           if(floor == 3){   //if floor is third floor

               continue;             }  

           cout<<"How many rooms are on floor " <<floor;  //prompts user to enter number of floors

           do{  //start of do while loop

               cout<<"(cannot be less than "<<MinRooms<<"): ";  //error message

               cin >>NoOfRooms;  //reads number of rooms from user

           }while(NoOfRooms<MinRooms);    //iterates as long as number of rooms are less than valid minimum number of rooms

           TotalRooms += NoOfRooms;   //adds number of rooms to the count of total number of rooms

           cout<<"How many of those rooms are occupied?";  //prompts user to enter number of rooms occupied

           do{  //start of do while loop

         cout<<"(cannot be less than 0 or greater than "<<NoOfRooms<<"): ";  //generates error message

         cin >>OccupiedRooms;  //reads number of rooms occupied by user

           }while(OccupiedRooms<0 || OccupiedRooms>NoOfRooms);   //iterates as long as the number of occupied rooms are less than 0 or greater than number of rooms

           TotalOccupied += OccupiedRooms;    }    //adds number of rooms occupied to the count of total number of occupied rooms    

       cout<<"\nThe hotel has a total of "<<TotalRooms<<" rooms"<<endl;  //displays the total number of rooms in the hotel

       cout<<TotalOccupied<<" are occupied."<<endl;  //displays the total number of occupied rooms

       cout<<(TotalRooms-TotalOccupied)<<" are unoccupied."<<endl;  //displays the total number of unoccupied rooms

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Explanation:

The program first prompts the user to enter number of floors in the hotel. Lets say user enters 6. This is stored in NoOfFloors So

NoOfFloors = 6

So the loop runs for 6 times

Next it asks user to enter the number of rooms in the floor 1. Lets say user enters 12 so this is stored in NoOfRooms so

NoOfRooms = 12

TotalRooms += NoOfRooms;

this statement keeps adding number of rooms to TotalRooms so

TotalRooms = 12

Next program asks user about the number of occupied rooms. Lets say user enters 10 so this is stored in OccupiedRooms so

OccupiedRooms = 10

this statement keeps adding number of rooms to TotalOccupied so

 TotalOccupied += OccupiedRooms;

TotalOccupied = 10

At next iteration program asks user again to enter number of rooms in floor 2. Suppose user enters 14 so

NoOfRooms = 12

TotalRooms += NoOfRooms;

TotalRooms = 12+14

TotalRooms = 26

Program asks again to enter number of occupied rooms so it becomes:

OccupiedRooms = 8

this statement keeps adding number of rooms to TotalOccupied so

 TotalOccupied += OccupiedRooms;

TotalOccupied = 10+8

TotalOccupied = 18

Next is skips floor 3 and iteration 3. and asks user to enter number of rooms in floor 4. Suppose user enters 14

Number of rooms become:

TotalRooms = 12+14+14

TotalRooms = 40

and suppose user enters 14 as occupied rooms so total occupied become:

TotalOccupied = 10+8 + 14

TotalOccupied = 32

For floor 5: Suppose user enters 13

TotalRooms = 12+14+14+13

TotalRooms = 53

For floor 5: Suppose user enters 10

TotalOccupied = 10+8 + 14+10

TotalOccupied = 42

For floor 6: Suppose user enters 12

TotalRooms = 12+14+14+13+12

TotalRooms = 65

For floor 6: Suppose user enters 11

TotalOccupied = 10+8 + 14+10+11

TotalOccupied = 53

Now the loop breaks

Hence

TotalRooms = 65

TotalOccupied  = 53

total unoccupied = TotalRooms-TotalOccupied = 65-53 = 12

The occupancy rate is: 100*(TotalOccupied/TotalRooms) = 100*(53/65) = 81.5385

The output of the program is attached in a screenshot.

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