MATLAB: Taking data received from serial port as single element

serial port

Hi all,
i am receiving the ASCII values of some data say (*12) through serial port, then after that i am eliminating first character i.e(*)Then i am converting this ASCII values to Decimal values using 'char'. Later i need to process remaining data '12' as single element for giving it as an input to some other function. But problem is my function is taking '1' and '2' as separate values instead of one single value '12'. please give some suggestions in a way such that i should give '12' as input to my function.
Sample Code
    ser1 = serial('COM27', 'BaudRate', 9600,'Terminator','*');
fopen(ser1);
while(1)
input3=fread(ser1);    
input1=input3(2:end)
input2=char(input1)
input3=input2
output=input3+1;
 end
If input is *12 expected output is 13. But i am getting output as 2(1+1),3(2+1)
Thanks in advance

Best Answer

You don't want to use CHAR, but SSCANF or STR2NUM, to convert your char input1 into a numeric variable.
 >> input1 = '12' ;
 >> class(input1)
 ans =
    char
 >> str2num(input1)
 ans =
    12
 >> class(ans)
 ans =
    double
 >> sscanf(input1, '%d')
 ans =
    12
 >> class(ans)
 ans =
    double
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