Hi guys, Here's the solution: HC-05 is actually a bluetooth SPP device, so we cannot use traditional serial function in matlab, because its only support 'real' COM port. However, matlab give us a similar lib named 'bluetooth': You can apply ccde as below to access the HC-05: 1. First make sure you havn't change the device name of you HC-05, default is 'HC-05', you can check it at your bluetooth Properities menu at Control Panel. Code%creat a bluetooth object%HC-05 channel default is 1 b = Bluetooth('HC-05',1); fopen(b);%write and read function fwrite(b,BluetoothWrite,'uchar'); BluetoothRead=fgets(b);%close and clear fclose(b); clear(b); 3.
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Series And Parallel Connection
The exercise is to retrieve the model number of a Bluetooth device. Win10 Bluetooth connection: Not sure why serial port object s7 fails to fopen. Any actionable suggestions or diagnostic questions are appreciated.
Hello all, I would like to read in data from a Bluetooth Device through my Bluetooth Adapter. I've tried to use the serial('COM1') and fopen/fread commands, but I do not receive any information. I've made a COM or Bluetooth connection through Windows' Bluetooth Devices and used the same COM ports to read data. I've also tried leaving this Windows' connection out and going through all the available COM ports to see if I can receive anything. I have not found much information on using a Bluetooth Adapter and reading data from a Bluetooth Device. Greetings, Hans.
As mentioned above, direct bluetooth communication does not work. However, if your bluetooth supports Serial Profile (SPP) that enables the bluetooth to show up as a serial port (COM) then you should most probably be able to talk to it. It is most probably a case of setting the correct properties for the serial object in MATLAB. Check BaudRates, FlowControl, Terminator etc. A simple test would be to try and talk to the bluetooth device from hyperterminal.
Note those settings and just replicate them in MATLAB. A quick search on File Exchange gave some that you could look for reference!
I have some sensors with Bluetooth SPP connections. I cannot seem to get MATLAB Serial IO to work with them. The 'Standard Serial over Bluetooth link' COM port entries are available in Device Manager, the port settings (in Device Manager and the MATLAB serial function call) are correct. On using fopen the error seen is that the requested com port is not available.
This is confirmed using instrhwinfo('serial') as the requested COM port is not in the list. I know the Bluetooth SPP is working because the only way I could get the devices working with MATLAB was to use a third party com2tcp forwarder, then use MATLAB's tcpip function to access the port. However, this is not ideal since the com2tcp forwarder is not that reliable. I'd rather be using MATLAB's serial io. Could this be an issue with the java version being used? Version('-java') gives 'Java 1.6.024-b07 with Sun Microsystems Inc. Java HotSpot™ 64-Bit Server VM mixed mode'.
My set up is Windows 7 Enterprise 64-bit, MATLAB 7.11.0 (R2010b) 64-bit.
I am trying to use the SSP as a COM port to receive data from MCU. I have to try many times to connect to the COM port, but it often failed to open.The version is R2013a and the codes are as below: s=serial('COM4'); fopen(s); Sometimes it would work,but usually failed and get errors: Open failed: Port: COM4 is not available. Available ports: COM4, COM5. Use INSTRFIND to determine if other instrument objects are connected to the requested device. Sometime I get this: Open failed: Cannot connect to the COM4 port. Possible reasons are another application is connected to the port or the port does not exist. I use instrhwinfo('serial') to check whether the COM4 is available, and I could find the COM4 is in AvailableSerialPorts list.Even when the COM4 is not in AvailableSerialPorts list, sometimes I can still connect.
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Bluetooth Serial Connection Matlab Central Difference
I was so confused. Here describe a similar problem, but I can't get any data using data=fgets(b); What's more I need to configure the COM ports like BaudRate,DataBits,StopBits.But I can't find these properties in bluetooth! This may be because you're not closing the serial connection after using it. After you open a serial connection and read from it, you need to close it before you can open and read from it again. So something like this should work every time: s=serial('COM4'); fopen(s); fgets(s); fclose(s); If you have an error and your script stops before reaching the fclose line, then you can use the following 2 commands to clear the open serial ports.
Newobjs = instrfind; fclose(newobjs) That should fix that problem.:).
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