Question

3. a) Write a Matlab program to define student grade program and student number with (10 Marks) statement logic b) Write a Matlab program for sensor selection of temperature, pressure, flow sensor with if-else (15 Marks) statement logic

Answer 1

Find your both the programs below:
a)  

prompt='What is the grade from 0 to 100?';

x=input(prompt)

if x>60

if x>70

if x>80

if x>90

if x>0

end

  if x>=90

disp('A')

end

end

if x>=80 && x<90

  disp('B')

end

end

if x>=70 && x<80

disp('C')

end

end

if x>=60 && x<70

disp('D')

end

end

if x<60

disp('F')

end

b)

clear all

mypi = raspi

mypi.AvailableI2CBuses;

mypi.I2CBusSpeed;

scanI2CBus(mypi,'i2c-1');

BMP180 = i2cdev(mypi,'i2c-1','0x77');

AC1m=int16(readRegister(BMP180, hex2dec('AA'),'int8'));

AC1l=int16(readRegister(BMP180, hex2dec('AB'),'int8'));

AC1 = int32(typecast((bitshift(AC1m,8)+ AC1l),'int16'));

AC2m=int16(readRegister(BMP180, hex2dec('AC'),'int8'));

AC2l=int16(readRegister(BMP180, hex2dec('AD'),'int8'));

AC2 = int32(typecast((bitshift(AC2m,8)+ AC2l),'int16'));

AC3m=int16(readRegister(BMP180, hex2dec('AE'),'int8'));

AC3l=int16(readRegister(BMP180, hex2dec('AF'),'int8'));

AC3 = int32((bitshift(AC3m,8)+ AC3l));

AC4m=int16(readRegister(BMP180, hex2dec('B0'),'int8'));

AC4l=int16(readRegister(BMP180, hex2dec('B1'),'int8'));

AC4 = int32(typecast((bitshift(AC4m,8)+ AC4l),'uint16'));

% AC5=int16(readRegister(BMP180, hex2dec('B2'),'uint16'));

AC5m=int16(readRegister(BMP180, hex2dec('B2'),'int8'));

AC5l=int16(readRegister(BMP180, hex2dec('B3'),'int8'));

AC5 = int32(typecast((bitshift(AC5m,8)+ AC5l),'uint16'));

% AC6=int16(readRegister(BMP180, hex2dec('B4'),'uint16'));

AC6m=int16(readRegister(BMP180, hex2dec('B4'),'int8'));

AC6l=int16(readRegister(BMP180, hex2dec('B5'),'int8'));

AC6 = int32(typecast(bitshift(AC6m,8)+ AC6l,'uint16'));

% B1=int16(readRegister(BMP180, hex2dec('B6'),'int16'));

B1m=int16(readRegister(BMP180, hex2dec('B6'),'int8'));

B1l=int16(readRegister(BMP180, hex2dec('B7'),'int8'));

B1 = int32((bitshift(B1m,8)+ B1l));

% B2=int16(readRegister(BMP180, hex2dec('B8'),'int16'));

B2m=int16(readRegister(BMP180, hex2dec('B8'),'int8'));

B2l=int16(readRegister(BMP180, hex2dec('B9'),'int8'));

B2 = int32((bitshift(B2m,8)+ B2l));

% MB=int16(readRegister(BMP180, hex2dec('BA'),'int16'));

MBm=int16(readRegister(BMP180, hex2dec('Ba'),'int8'));

MBl=int16(readRegister(BMP180, hex2dec('BB'),'int8'));

MB = int32((bitshift(MBm,8)+ MBl));

% MC=int16(readRegister(BMP180, hex2dec('BC'),'int16'));

MCm=int16(readRegister(BMP180, hex2dec('BC'),'int8'));

MCl=int16(readRegister(BMP180, hex2dec('BD'),'int8'));

MC = int32((bitshift(MCm,8)+ MCl));

% MD=int16(readRegister(BMP180, hex2dec('BE'),'int16'));

MDm=int16(readRegister(BMP180, hex2dec('BE'),'int8'));

MDl=int16(readRegister(BMP180, hex2dec('BF'),'int8'));

MD = int32((bitshift(MDm,8)+ MDl));

if readRegister(BMP180, hex2dec('D0'),'int8') ~=hex2dec('55')

error('Sonething wrong with temperature sensor')

end

writeRegister(BMP180, hex2dec('F4'), hex2dec('2E'),'int8')

pause(4.5E-3)

pause(5*60)

MSBt=int16(readRegister(BMP180, hex2dec('F6'),'int8'));

LSBt=int16(readRegister(BMP180, hex2dec('F7'),'int8'));

UT=int32((bitshift(MSBt, 8)) + (LSBt));

% UT = int32(27898);

% AC1 = int16(408)

% AC2 = int16(-72)

% AC3 = int16(-14383)

% AC4 = int16(32741)

% AC5 = int16(32757)

% AC6 = int16(23153)

% B1 = int16(6190)

% B2 = int16(4)

% MB = int16(-32768)

% MC = int16(-8711)

% MD = int16(2868)

%

%

X1=int32((UT-int32(AC6))*int32(AC5)/(2^15));

X2=int32(int32(MC)*2^11/((X1+int32(MD))));

B5=double(X1+X2);

T=(B5+8)/(2^4)*0.1