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I see that exist this event :
CYBLE_EVT_GATTS_WRITE_REQ:
/* This event is generated when the connected Central device sends a
* Write request. The parameter contains the data written */
What a event generated when the connected Central device sends request to read specific characteristic?
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None, read requests are handled by the BLE stack automatically (and return the last value written to the characteristic)
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None, read requests are handled by the BLE stack automatically (and return the last value written to the characteristic)
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So how I can get value that change all the time ? For example speed of running , distance I walked ....
I need receive current value in this moment I tap on button "Read".
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You can use notifications to push changes to the GATT client.