Communicate with CC2540 USB dongle with serial terminal program(tera term)

Hi Vivek, you have several similar examples at the top rows of the forum, in the linux examples.

Can you give them a try and let us know?

Thanks! :)

I'm trying to do the same. I want to develop my own application on MATLAB to communicate with the usb dongle through HCI commands via a serial connection. Before doing that I tried using Realterm to send any command but I couldnt enter anything in the terminal. I've looked at the provided examples including those developed in  Linux but couldn't find any clue why I dont get a response from the dongle. The only two applications that work are BTool and BleHealthDemo (which is based on BTool) . I looked at the BleHealthDemo code but didnt get any helpful hint.

I feel there is something has to be done to initialise the connection to the usb dongle under Windows 7. I looked at the JavaSimplePeripheral code and it seems it doesnt work on Windows 7. I wonder if anyone has managed to communicate with the dongle using applications other than BTool.

Regards

Ehad

Thanks a lot, it's working now. I had to send and receive the data as ASCII characters in MATLAB.  Here is a sample code for testing the serial communication with the USB dongle:

-------------------------------------------------------------------------------

clear
clc
try
fclose(INSTRFIND);%closes all current ports
catch
end
s = serial('COM2');
set(s,'BaudRate',115200,'Timeout',0.2,'FlowControl','none','Parity','none');

fopen(s);

GAP_initialise=['01';'00';'FE';'26';'08';'03';'00';'00';'00';'00';'00';'00';'00'
'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00'
'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'01'
'00';'00';'00'];
dec=hex2dec(GAP_initialise);
fwrite(s,char(dec)');
[A,count] = fread(s,30);
h=dec2hex(A);
h_disp='';
for i=1:length(h)
h_disp=[h_disp h(i,:) ' '];
end
h_disp

---------------------------------------------------------------------------

Hi Vivek

did you suceed in Labview?

Best regards, Gernot

Dear Ehad, 

I have taken the MATLAB code you have provide here and I did extend it to acquire the time parameters, scan for sensors and establish connection.

However, when I try to establish a connection link I get an error that indicates that ' bleNotReady".

The following code was sent to the module:

GAP_EstablishLinkRequest= ['01'; '09'; 'FE'; '09'; '00'; '00'; '00'; '1A'; 'EB'; 'A1'; 'E5'; 'C5'; '78']; %for OLP425i
TxText=['01 09 FE 09 00 00 00 1A EB A1 E5 C5 78'];
%GAP_EstablishLinkRequest= ['01'; '09'; 'FE'; '09'; '00'; '00'; '00'; '53'; '19'; 'A0'; 'E5'; 'C5'; '78']; %for ketfob
%TxText=['01 09 FE 09 00 00 00 53 19 A0 E5 C5 78'];
dec=hex2dec(GAP_EstablishLinkRequest);
fwrite(serConn, char(dec)');
display('Establish Link Request')
display(['Tx: ' TxText])

[R,count] = fread(serConn);

h=dec2hex(R); %convert received data from decimal to hex
RxText=''; %define an empty string array
for i=1:length(h)
RxText=[RxText h(i,:) ' ']; %load the array with to received string
end
display(['Rx: ' RxText])

and I get the following packet:

Rx: 04 FF 06 7F 06 10 09 FE 00 

where the 6th packet indicates the status (0x00 =success and my case 0x10=bleNotReady) according to table Host Error Code (pp.153) in the TI_BLE_Vendor_Specific_HCI_Guide.pdf.

I think there is an extra parameter I have to set in the MATLAB serial setting because using in X_CTU software I can connect with the sensor successfully.

Do you have any idea what is wrong with my code or module.

Regards,

Asiya

Hi Asiya,

I haven't tried sending a link request. What I did is that I set the portable BLE node to continuously advertise and the BLE dongle on my PC is continuously scanning. What I noticed in your code you haven't initialised the GAP. Here is the part of the code I used to initialise the GAP. Once you do that, try to run your code and see how it goes.

GAP_initialise=['01';'00';'FE';'26';'08';'03';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'00';'01';'00';'00';'00'];

GAP_DeviceDiscoveryRequest=['01';'04';'FE';'03';'03';'01';'00'];

dec=hex2dec(GAP_initialise);
fwrite(s,char(dec)');
disp('Device initialsation')
[A,count] = fread(s);
h=dec2hex(A);

Kind Regards

Ehad

Hi Ehad,
Thanks for your fast reponse.
I did show you the last part of the code.
But actually I did initialize the GAP using the code provided by you
and the folowing lines shows the packest I sent and rececived through MATLAB:

GAP_DeviceInit
Tx: 01 00 FE 26 08 03 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 01 00 00 00
Rx: 04 FF 06 7F 06 00 00 FE 00
Rx: 04 FF 2C 00 06 00 FC DA 09 AF 59 90 1B 00 04 4C 10 E4 75 76 4B FB A4 23 82 9A D8 AD 69 92 3E FB A1 23 82 3A 58 AF 91 32 BD 2F 97 1A DD C5 09
GAP_GetParam
Tx: 01 31 FE 01 15
Tx: 01 31 FE 01 16
Tx: 01 31 FE 01 1A
Tx: 01 31 FE 01 19
Rx: 04 FF 08 7F 06 00 31 FE 02 50 00
Rx: 04 FF 08 7F 06 00 31 FE 02 50 00
Rx: 04 FF 08 7F 06 00 31 FE 02 00 00
Rx: 04 FF 08 7F 06 00 31 FE 02 D0 07
Send Discovery Request
Tx: 01 04 FE 03 03 01 00
Rx: 04 FF 06 7F 06 00 04 FE 00
Rx: 04 FF 10 0D 06 00 00 00 1A EB A1 E5 C5 78 C9 03 02 01 06
Rx: 04 FF 1A 0D 06 00 04 00 1A EB A1 E5 C5 78 CA 0D 0C 09 4F 4C 50 34 32 35 2D 45 42 31 41
Warning: The specified amount of data was not returned within the Timeout period.
Rx:
Establish Link Request
Tx: 01 09 FE 09 00 00 00 1A EB A1 E5 C5 78
Rx: 04 FF 06 7F 06 10 09 FE 00

It is clear that the GAP was intialised and there is a response similar to the ones I get from Btool.
However, the connection request failed.

I thought that you have done the connection link.

Regards,
Asiya

Asia,

This is pretty late, but in case someone else runs into the same problem as you...

You stated that you get:

Establish Link Request
Tx: 01 09 FE 09 00 00 00 1A EB A1 E5 C5 78
Rx: 04 FF 06 7F 06 10 09 FE 00

The "10" in your RX means "bleNotReady." This is probably due to the fact that you did not cancel discovery (opcode 0xFE05)

Also, if you know the device address, I would suggest setting addrTypePeer to 1 (ADDRTYPE_STATIC). So your Establish Link Request should look like: 01 09 FE 09 00 00 01 1A EB A1 E5 C5 78