Conversion from uint8 to ascii to number

I am currently working with RS232 serial communication between a Trimble gps and a Speedgoat real time computer in Simulink. From the buffer in the Speedgoat i receive a uint8 array, that i want to convert to a the corresponding ascii value and then convert the new array into one double.

For example

uint8: [48 46 56 52] -> [0 . 8 4] -> 0.84

Help would be much appreciated!

[Zhengyi Chen]

You can convert uin8 data into char and use str2double() function to conver the strings in to double data type.

[Walter Roberson]

... Which is the Answer that I posted.

Answer 1

[Walter Roberson]

str2double(char(TheArray))

[Carl-Johan Elm]

Thanks but you can not use the char() or str2double() command in embedded matlab functions in simulink. =(

Answer 2

[José-Luis]

Somewhat convoluted, depends on whether you can use sprintf() and sscanf():

your_ascii =  [48 46 56 52];
your_ascii = your_ascii - '0';
your_string = sprintf('%i',your_ascii);

% your_string = regexprep(your_string,'-','.'); %This could work also, instead of the indexing
your_string(your_string == '-') = '.';

your_val = sscanf(your_string,'%f');

Answer 3

[Andrei Bobrov]

a = uint8([50 48 46 48 48 56 52] );
i0 = a == 46;
a1 = a(~i0)-'0';
out = double(a1)*(10.^(numel(a1)-1:-1:0).')*10^-(find(i0)+1);