Device communication

Hi

I need help with reading data from a device. My code :

s1 = serial('COM4');
s1.BaudRate = 9600;
s1.DataBits = 8;
s1.Parity = 'none';
s1.StopBits = 1;
s1.FlowControl = 'none';
s1.Terminator ='CR';
fopen(s1);

fread(s1);

fclose(s1);
delete(s1);

The problem occurs, because I have to send/transmit a macro to the device. Macro is ACK(acknowledgment/006) in ASCII. I don't know how to do this. What should I add to my code?

Thanks a bunch in advance!

Answer 1

[Walter Roberson]

fwrite(s1, char(6))

Answer 2

[Slobodan Djordjevi?]

It worked, thanks!

Now the the data is an array of 1x17 of some numbers 48 48 48 48 46 48 52 13 48 48 48 48 46 48 48 13 10, am I supposed to convert this?

[Walter Roberson]

fwrite(s1, char([48 48 48 48 46 48 52 13 48 48 48 48 46 48 48 13 10]))

Please double-check the list of characters. At the very end you have 10 following the 13, which is linefeed following carriage return, but earlier in the sequence you have a carriage return by itself. Very few systems mix carriage return alone with carriage return followed by linefeed.

Answer 3

[Slobodan Djordjevi?]

Nevermind, I did it with char(data).

Thank you Walter!