i am having a problem with my bluetooth module, am using an HC-05 FC-114 where there is no key pin but there is an EN pin. I couldn't use it to get the AT mode i tried to follow many tutorials but using the EN pin instead of the key pin but it doesn't work! how can i get into the AT command mode? Any help please!
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I am trying to start Bluetooth in LE only mode when the system boots. I changed the "ControllerMode" to "le" in the main.conf file, I had to create the main.conf file because it wasn't there but that still did not work. Is there any other way that I can get bluetooth to start in LE only mode? Is there a way to force the configuration of bluetooth to not be reset upon reboot?
Note that in my distro I don't have bluez, I only have hci and btmgmt that I can work with
Thank you in advance. Any help is much appreciated.
I have problem with HM-10 BLE module with V705 firmware. When I try to connect to the module with Bluetooth Serial Monitor app(Xiaomi Redmi 5 Plus, MIUI 11.0.2 Global, Android 8.1), I get write descriptor failed error. UUID is 0xFFE0(default). Same module works fine with V609 firmware.
Also, phone gets paired with mthe module if I use BLE Scanner app - Image on info BLE Scanner sees.
I turned on Bluetooth debbuging in Dev. options and I found this.
I'm new to Bluetooth (LE). Also, if I try to pair with the module from phone's settings, if module doesn't require PIN, then phone can't pair, but if it requires PIN, then phone can pair. Why?
Why with V705 firmware pairing doesn't work but with V609 works without any problems? All settings are untouched.
HM-10 will be used for DIY project. App for the project will be done soon, so for now I use Bluetooth Serial Monitor app to see packages from BT. Thanks for help!
I am using Arduino UNO R3 to connect a HC06 bluetooth module referring below article, i am using MAC Book
http://tronixlabs.com/news/tutorial-using-hc06-bluetooth-to-serial-wireless-uart-adaptors-with-arduino/
I am able to connect to HC06 using serial monitor of Arduino IDE where HC06 LED get static.
But I am unable to connect to Note 4 Bluetooth it get paired using password 1234 but never able to connect and show up on Terminal on my android. What is wrong?
LED keep blinking after pair, please guide
Added sketch URL:https://codebender.cc/sketch:238653
I have Bluetooth SPP module SPP-C / SPP-CA , it is cheap module that should work the same way as well known HC-06 / HC-05 modules.
I have got one problem, everything works, module is communicating over serial interface pairing etc... but i can not enter the AT mode to change device name pin or baud rate. Does anyone had the same problem and how to solve it ? there is a very small data published and sellers are not responding.
So I assume that someone may help with that situation. http://www.ebay.com/itm/Bluetooth-Module-UART-Serial-Interface-SPP-CA-works-with-YZXstudio-USB-Monitors-/201414967094 that's the module. it is based on Beken BK3211 chip.
It seems that nothing special is needed to enter command mode on the SPP-CA module I have.
Whenever you connect or disconnect by bluetooth, the module will print:
CONNECTED
.. serial data is transferred ..
+DISC:SUCCESS
When the module is disconnected, you can execute AT commands such as AT+BAUD just like with HC05 modules.
3 years later and I've looked everywhere for an answer to this question and finally stumbled upon the solution by fiddling away.
I am connecting via an FTDI module using Teraterm software to enter commands.
You need to power up the FTDI and BT modules by plugging into PC USB. open Teraterm and set up to see the COM port.
Now you have to momentarily connect GND to port 11 on the BT module to 'reset' the module. The module will power down and back up again and in doing so will enter AT mode and you should be able to communicate with the module.
Good luck
Old question however still relevant, I found the solution! It is pretty simple, you can use an breadboard and some jumper wires however you can also create an adapter like I did. Like explained in this document with AT-commands, you need another UART (serial connection) to program the SPP. The SPP must not connected to anything (discovery mode) to be able to program it.
You can do this, like I did, with another SPP or you can use serial programmer or an Arduino. Notice that the serial connection is 3V, so when using an Arduino you need some resistors (1K and 2K) to create a voltage divider (google it).
The schematic is pretty simple (when not using an Arduino), I designed this adapter:
You need these components to create the adapter (and maybe some wires):
Connect everything like in the schematic above (STATE and EN are not connected), insert the modules (take care of pin orientation!), insert an USB cable and connect it to some power source.
In Arduino IDE, select the com-port you want to configure and launch the Serial monitor, you can now enter AT-commands to configure the one that is not connected:
Done! That is pretty easy right? When you want to configure the other, disconnect the one that is connect and connect the other one. An overview of AT-commands can be found in the document in provided link above.
Hopes it helps ;-)
For a college project of mine, I am using an Arduino Duemilanove micro-controller to connect a bluetooth module to my Android Device Sony Xperia Tipo Dual using the app called BlueTerm. I have two bluetooth modules 1.Bluetooth Module UART, Model: RKI-1546 and 2.Model: RKI-1545.
But the problem I have is that, After I connect the micro-controller's RX to module's TX and vice versa, and send a character from my app, there is no change in the serial monitor(in the Arduino Software). I mean it doesn't display any character i had sent. However it works just fine the other way round. That is, when I type something on my serial monitor and press send, it readily appears on the mobile. I have tried 3 different RKI-1546's and a RKI-1545. I have tried using Arduino Mega(in place of Arduino Duemilanove) too. But this problem persists. The bluetooth module doesn't seem to recieve anything.
I hope if you can help me out on this.
Considering you can send data to your phone, you have set your baud rate correctly, and the pins wired correctly. Without your code I/we can't help you, so please post your code.
Thom
It is a hardware fault not software. Total error in Arduino Due.
Fix this bug: