Comments (2)
nonlin
commented on July 22, 2024
Notice there are two different ways to obtain services?
One is via the ScanServicesAsync which uses the same calls in the example.
The other is via retreiveServices which uses GetGattServicesForUuidAsync.
Not sure why we do it two different ways but the way its done in ScanServiceAsync seems to work on my PC where as the GetGattServicesForUuidAsync doesn't seem to work on my PC but does for my laptop.
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adabru
commented on July 22, 2024
Thank you for posting the results of your investigation!
Not sure why we do it two different ways
GetGattServicesAsync is used to explore available services, GetGattServicesForUuidAsync is used to retreive a previously known service, without the need to list all services. Given your description of your driver, one random guess of mine is that your driver doesn't support that api?
the way its done in ScanServiceAsync seems to work on my PC
I guess you can add the services found during ScanServiceAsync to the cache. That way you can run a service scan before you retrieve the characteristic.
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