Code=6 'The connection has timed out unexpectedly

When doing the stress test of Bluetooth communication , After discovering the Bluetooth connection, it will be quickly disconnected , And the console will report an error

Error Domain=CBErrorDomain Code=6 "The connection has timed out unexpectedly." UserInfo=0x1e09c050 {NSLocalizedDescription=The connection has timed out unexpectedly.}

use ligthblue The same thing , I searched a lot of questions on the Internet, but there are no exact matches .

But I saw it by chance Apple hardware parameter document
You'd better show this to the hardware engineer , In their code max interval and min interval Set up , They can burn a firmware for you after modification , In addition, if the communication between devices is too frequent , Also do some fault-tolerant processing .

However, these still do not solve my problem . But after I described all my operation steps, the old driver of hardware engineering helped me solve the problem .

When I send the signal from the Bluetooth main device , Bluetooth is in standby mode for a short time , During this period, my mobile phone can search Bluetooth and establish a connection . But once this time period has passed , Bluetooth will be turned off from standby . Unless I use some tool to reset Bluetooth from standby state to communicable state , In this way, Bluetooth will not be turned off automatically .

This reminds me of this situation when debugging Bluetooth bracelets before . However, this state was not resolved due to conditions .

Reference resources
iOS Bluetooth device automatically disconnects

Suddenly I’m seeing spontaneous disconnects in my iOS 7 app from my nRF51822 peripheral