Connect to bluetooth service watch and read HR data
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Hey everyone, I'm a beginner in c++ and I'm trying to connect to my garmin watch via bluetooth. The watch is connected on w10, with bluetooth LE explorer i can see the UUID and service ID for the heartrate. I'm looking for a simple way to connect to it from c++ and read the data. The last 2 days i've been trying even c++ builder, all kinds of libraries but can't connect. I'm surprised i can't find simple examples online, bluetooth and windows doesn't seem to be quite simple. Does anyone have an example on this?
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Hey everyone, I'm a beginner in c++ and I'm trying to connect to my garmin watch via bluetooth. The watch is connected on w10, with bluetooth LE explorer i can see the UUID and service ID for the heartrate. I'm looking for a simple way to connect to it from c++ and read the data. The last 2 days i've been trying even c++ builder, all kinds of libraries but can't connect. I'm surprised i can't find simple examples online, bluetooth and windows doesn't seem to be quite simple. Does anyone have an example on this?
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So, I've gotten one stop further, I'm using this code: GitHub - urish/win-ble-cpp: Proof of Concept - BLE on Windows (for Web Bluetooth)[^] I've put in my shortcodes for the service and charachteristic and the code manages to complete them for the right UUID's so I assume it connects! these are the shortcodes and ID's, next up, how can i read the values from these?
auto characteristicUUID = Bluetooth::BluetoothUuidHelper::FromShortId(0x2A37);
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So, I've gotten one stop further, I'm using this code: GitHub - urish/win-ble-cpp: Proof of Concept - BLE on Windows (for Web Bluetooth)[^] I've put in my shortcodes for the service and charachteristic and the code manages to complete them for the right UUID's so I assume it connects! these are the shortcodes and ID's, next up, how can i read the values from these?
auto characteristicUUID = Bluetooth::BluetoothUuidHelper::FromShortId(0x2A37);
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Sorry, I cannot answer that. Once you have established a connection then the data passed between the stations will depend on the devices being used. Check the technical documents for the watch you are using.
Ok, I'm getting closer:
auto leDevice = co_await Bluetooth::BluetoothLEDevice::FromBluetoothAddressAsync(264540343013609);
auto naam = leDevice->Name;auto servicesResult = co\_await leDevice->GetGattServicesForUuidAsync(serviceUUID); auto service = servicesResult->Services->GetAt(0); auto characteristicsResult = co\_await service->GetCharacteristicsForUuidAsync(characteristicUUID); auto test = characteristicsResult->Characteristics->First(); auto characteristic = characteristicsResult->Characteristics->GetAt(0);So firts line, i'm putting in the mac address manually, i check if the name corresponds and indeed it's my garmin. Then i put in the service and charateristic for the heart rate service. Now i'm stuck, how could I get the heart rate value out of this? I read somewhere that it's the first byte but don't know how to extract this
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Ok, I'm getting closer:
auto leDevice = co_await Bluetooth::BluetoothLEDevice::FromBluetoothAddressAsync(264540343013609);
auto naam = leDevice->Name;auto servicesResult = co\_await leDevice->GetGattServicesForUuidAsync(serviceUUID); auto service = servicesResult->Services->GetAt(0); auto characteristicsResult = co\_await service->GetCharacteristicsForUuidAsync(characteristicUUID); auto test = characteristicsResult->Characteristics->First(); auto characteristic = characteristicsResult->Characteristics->GetAt(0);So firts line, i'm putting in the mac address manually, i check if the name corresponds and indeed it's my garmin. Then i put in the service and charateristic for the heart rate service. Now i'm stuck, how could I get the heart rate value out of this? I read somewhere that it's the first byte but don't know how to extract this
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As I told you earlier, you need to check the documentation for your device. The format of the data it sends will only be documented by the manufacturer.
@Richard, I'm looking for people who have practical advise in this, I'm new to c++ and to everything i'm trying to do here, I've been struggeling for days. There is also not a lot to find on the internet regarding this. If you don't know the answer that's ok, you don't need to answer. I'm not posting on here to get 'check the documentation' answers.
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@Richard, I'm looking for people who have practical advise in this, I'm new to c++ and to everything i'm trying to do here, I've been struggeling for days. There is also not a lot to find on the internet regarding this. If you don't know the answer that's ok, you don't need to answer. I'm not posting on here to get 'check the documentation' answers.
As I keep pointing out, the format of the data that will be presented by the device is specific to that device. So the only way to find out what it is, and what format it is sent in, is to get the technical documentation for the device. It is not a C++ issue.
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As I keep pointing out, the format of the data that will be presented by the device is specific to that device. So the only way to find out what it is, and what format it is sent in, is to get the technical documentation for the device. It is not a C++ issue.
thanks for hijacking this question, you spend days and days trying to work stuff out, put a question up for help to get this... Don't you have anything better to do? Incredible
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thanks for hijacking this question, you spend days and days trying to work stuff out, put a question up for help to get this... Don't you have anything better to do? Incredible
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thanks for hijacking this question, you spend days and days trying to work stuff out, put a question up for help to get this... Don't you have anything better to do? Incredible
Wim Van den Borre wrote:
you spend days and days trying to work stuff out
And Richard is trying to lessen that time by giving you some sage advice. This is how integrations work, if devices are spitting out data in certain format (and many times that format is specific to the vendor) it is up to YOU to determine (by looking at available vendor documentation) and code for this format.
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment "Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst "I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
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Wim Van den Borre wrote:
you spend days and days trying to work stuff out
And Richard is trying to lessen that time by giving you some sage advice. This is how integrations work, if devices are spitting out data in certain format (and many times that format is specific to the vendor) it is up to YOU to determine (by looking at available vendor documentation) and code for this format.
"the debugger doesn't tell me anything because this code compiles just fine" - random QA comment "Facebook is where you tell lies to your friends. Twitter is where you tell the truth to strangers." - chriselst "I don't drink any more... then again, I don't drink any less." - Mike Mullikins uncle
Ow boy, i started by telling i'm a complete beginner and was looking for people who have experience in this. I'm not looking for dataformats, i'm looking to connect w10 bluetooth through c++ not a lot to find on the interwebz, so if anyone has had succesfull experience with this please answer this thread.
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Ow boy, i started by telling i'm a complete beginner and was looking for people who have experience in this. I'm not looking for dataformats, i'm looking to connect w10 bluetooth through c++ not a lot to find on the interwebz, so if anyone has had succesfull experience with this please answer this thread.
You're not going to find anyone who has experience SPECIFIC TO YOUR DEVICE. You're getting the correct advice, and as a beginner, you need to learn that the best source of information on a specific device is the manufacturer of that device.
Asking questions is a skill CodeProject Forum Guidelines Google: C# How to debug code Seriously, go read these articles.
Dave Kreskowiak -
You're not going to find anyone who has experience SPECIFIC TO YOUR DEVICE. You're getting the correct advice, and as a beginner, you need to learn that the best source of information on a specific device is the manufacturer of that device.
Asking questions is a skill CodeProject Forum Guidelines Google: C# How to debug code Seriously, go read these articles.
Dave Kreskowiakyears ago i made some mvc apps, the help i got on codeproject was incredible. Seems this is down the drain, none of you 3 are even reading my question, in stead of thinking about an answer (why else would you responsd to a question?) it's rtfm and acting hurt.
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years ago i made some mvc apps, the help i got on codeproject was incredible. Seems this is down the drain, none of you 3 are even reading my question, in stead of thinking about an answer (why else would you responsd to a question?) it's rtfm and acting hurt.
I have read it. THe advice you've gotten gets you to the point right after successfully connecting to the device. Reading data from it is device dependant, and that is where the CP advice ends and the manufacturer advice begins.
Asking questions is a skill CodeProject Forum Guidelines Google: C# How to debug code Seriously, go read these articles.
Dave Kreskowiak -
Ow boy, i started by telling i'm a complete beginner and was looking for people who have experience in this. I'm not looking for dataformats, i'm looking to connect w10 bluetooth through c++ not a lot to find on the interwebz, so if anyone has had succesfull experience with this please answer this thread.
Wim Van den Borre wrote:
i'm a complete beginner and was looking for people who have experience in this.
You are making a huge assumption that anyone here, beside yourself, has any experience with talking to a "garmin watch via bluetooth."
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles
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I have read it. THe advice you've gotten gets you to the point right after successfully connecting to the device. Reading data from it is device dependant, and that is where the CP advice ends and the manufacturer advice begins.
Asking questions is a skill CodeProject Forum Guidelines Google: C# How to debug code Seriously, go read these articles.
Dave KreskowiakIf anyone is interested in this project, i found code in c# that does almost exactly what i want hr formats are almost the same for a lot of manufacturers, unfortunatelt i need my code to work in c++. GitHub - cornelhuman/QuickBluetoothLE: Quickly create a C# application to read values from a Bluetooth Low Energy device. This application is a Dot.Net 4.7.2 console application that uses the Universal Windows Platform libraries to interact with Blu[^]
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thanks for hijacking this question, you spend days and days trying to work stuff out, put a question up for help to get this... Don't you have anything better to do? Incredible
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Well who'd a thought: https://developer.garmin.com/[^].
That almost looks like tools one could use to read data from a Garmin device. I wonder if it would help the OP!
"One man's wage rise is another man's price increase." - Harold Wilson
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles