RS232 communication and clear buffer data

Question

0 个投票

Hello everyone,

I wrote this code to communicate my device using MATLAB interface.

serConn = serial('COM11','BaudRate',9600); % Init. COM Port 
fopen(serConn); 
fprintf(serConn,' *ABCD*'); 
Rcvd = fread(serConn);
hexpass=sprintf('%02X ', Rcvd);
 disp(hexpass);
fclose(serConn)

after compilation of this code i got following out....

24 12 32 45 00 90 09 08 .. .. .. ..

after running this code first time i got above mentioned output but if i run it 2nd time then it is showing me some garbage values like 1A 20 03 03 04 .. .. .. .. .. . But i want data will be same at both times. So please suggest how could i clear buffer values and how i will get same data all the time.