I'm using the BGScript for Bluetooth program. BGScript provides start advertising API. API name is "gap_set_adv_parameters(adv_interval_min, adv_interval_max, adv_channels)(result)"
What I want to do is send an advertising packet when an event happens. Not interval advertising. Is there a way to do it? Any help will be appreciated. Thanks,
iBeacon advertising example of BGScript.
https://bluegiga.zendesk.com/entries/29990857-Apple-iBeacon-example
What sort of event are you talking about? If you want to respond to an interrupt from a component in your circuit, you will need to configure hardware.xml to make sure the interrupt pin is set properly. Then, depending on the component, you may need to enable interrupts by modifying registers on that component. With all of that configured properly, BGScript will call an event handler method in your script:
event hardware_io_port_status(delta, port, irq, state)
You can then set advertising parameters at this point. But are you sure you want to set advertising parameters and not just update a Bluetooth characteristic? If you provide a little more info on what you're trying to achieve, I can provide more specific help.
Related
first of all: What i am trying to do is only for private interest.
I'd like to connect a AT-09/HM-10 BLE-Module with Firmware 6.01 to another device which provides also a BLE Module, which it is not based on the CC254X-Chip,
I am able to communicate with this Device using my Laptop with integrated Bluetooth, Linux and the bluepy-helper. I am also able to make a connection using the HM10 through a USB-RS232-Module and "Hterm", but after that quite Stuck in my progress.
By "reverse-engineering" the Android-Application for controlling this particular device i found a set of Commands, stored as Strings in Hex-Format. The Java-Application itself sends out the particular Command combined with a CRC16-Modbus-Value in addition with a Request (whatever it is), to a particular Service and Characteristic UUID.
I also have a Wireshark-Protocol pulled from my Android-Phone while the application was connected to the particular device, but i am unable to find the commands extracted from the .apk in this protocol.
This is where i get stuck. After making a connection and sending out the Command+CRC16-Value i get no response at all, so i am thinking that my intentions are wrong. I am also not quite sure how the HM-10-Firmware handles / maps the Service and Char-UUIDs from the destination device.
Are there probably any special AT-Commands which would fit my need?
I am absolutely not into the technical depths of Bluetooth and its communication layer at all. The only thing i know is that the HM-10 connects to a selected BLE-Device and after that it provides a Serial I/O and data flows between the endpoints.
I have no clue how and if it can handle Data flow to certain Service/Char UUIDs from the destination endpoint, althrough it seems to have built-in the GATT , l2cap-Services and so on. Surely it handles all the neccessary communication by itself, but i don´t know where i get access to the "front-end" at all.
Best regards !
I'm a newbie of BLE programming on android.
In my first apps using BLE on android, I have a big problem.
I got a ScanRecord from Apple Bluetooth Headset using this function.
#Override
public void onScanResult(int callbackType, ScanResult result)
and I got a manufacturer data using Apple corp, ID(0x4C).
after that, I don't know how to decode a manufacturer data.
I want to auxiliary bluetooth headset information such as battery info, direction info etc. but I don't know how to decode the manufacturer data.
I also searched Apple development document(https://developer.apple.com/accessories/Accessory-Design-Guidelines.pdf)
But that guide document didn't help me.
Anyway, anyone who tell me how to resolve this problem?!!?!
Thank you to read my question.
Ok so from your comment it looks like you scanned the device over BLE and want to use one of the services it offers to get information like battery info.
The first thing you will need to do establish a connection to the BLE device.
The scanresult you pasted has a method getDevice you'll need to call
After you get the device you can call its connectGatt method. This will attempt to connect your phone and BLE device.
The connectGatt method from step 2 requires a callback. When the connection is successful or unsuccessful the callback will fire onConnectionStateChanged. If successful it will have the success status. This method will also give you a gatt device we will use in step 4.
If step 3 was successful we can assume your phone is connected. The next thing we want to do is discover services. You do this by using the gatt devices discoverServices method.
When the services are discovered your callback will fire onServicesDiscovered. At this point you can now use services. Depending on the API of the headphones they'll want you to read, or subscribe to a services characteristic and descriptor. Since I don't know the API I can't help you further. But you'll end up needing to use one or more of the following:
setCharacteristicNotification
readCharacteristic
readDescriptor
And the value will return to your callback on. Keep in mind you must wait for the callback for each request before write/reading/subscribing to another characteristic or descriptor.
AVRCP key events are handled in bluez within avdtp file which invokes uinput module in kernel. Can anyone suggest me how these key events are send to application to play/pause/rewind , is any key listener present which sends these key events to respective applications or if applications listen to key events, do they need to subscribe to some service?
Thanks in advance
depending on which blueZ version you are using, you can do following,
take a look at the test of blues for single-endpoint. there is implemented a Control interface, and if you use some tool like Dfeet, then you can see the interfaces related to it, so that you can call stop, play, next commands...
Supposed I have a CQRS-based system with a web UI that I want to integrate with some external device, let's say an Arduino board.
Basically, I can think of three scenarios:
When the user clicks on a button in the web UI, the Arduino shall do something.
When the user pushes a hardware button, the domain shall react and the UI shall update.
When the user pushes a hardware button, the UI shall update.
How do I model these scenarios?
This is quite easy IMHO: UI emits a command, business logic runs, emits an event, and Arduino is listening for events. Basically, the Arduino is nothing but an event denormalizer. Is this the correct approach?
This is quite easy IMHO as well: Arduino emits a command, sends it to the command bus, and the same procedure runs as with scenario 1. Basically, there's no difference for the CQRS-system whether the command comes from the web UI of from anything else.
This is where I'm really unsure: Supposed the Arduino handles the button press itself, and flashes an LED in response. I just want to make sure that my application takes notice of "the LED has been flashing". This is no command (as the flashing already happened), instead it's an event. What do I do with this event? Do I simply store it in the event store and bypass my domain? This seems horribly wrong to me. Do I emit a pseudo-command which is turned 1:1 into a matching event? This will work and does not bypass the domain, but it feels wrong as well, as it actually is no command. What should I do?
Any advice on these things?
1.Just use an event handler( updating ui maybe using websocket ) listening on Arduino event if no state should change in your domain.
2. Use a saga listening on Arduino event and fire a command if state should change in your domain.
UI is not a domain concern. So I prefer option 1.
I want to a Java ME application that transfers any SMS received to a PC using bluetooth. The PC can then direct the Java ME application via bluetooth to send a response SMS. Is there library available for this architecture or I have to design it myself?
Is this approach correct or a better one exists? I want to use bluetooth as then I will not have dependency on the cable.
You'll need to create this yourself, however you'll find that you can't do what you want with J2ME.
J2ME can't access any old SMS that the handset receives, only ones sent to a specific port upon which the MIDlet is listening. So to get all the other SMSes, create a bluetooth serial/dial-up connection to your handset in the way I've described in this answer.
Create a PC client which repeatedly issues AT+CGML commands (as described in the AT command set document linked to in the answer above), to see when an SMS has been received. Use AT+CGMR to read and parse the message text. Then use AT+CGMS to sent a response. This can all be done over bluetooth.
It's better to use the serial connection to send a response, because a MIDlet cannot usually be triggered to open based on incoming bluetooth data.
Hope this helps.
You may have already achieved your task, anyway for the reference I think it is much better if you try using Gammu . I'm using it for the same task (Send / receive SMS through PC ) with a simple bat file I have written, works like a charm.
Anyway you don't need any J2me program for this.
Wammu takes care of making the connection to phone and sending AT commands.