According to the instructions of BLE, equipment before the match will be broadcast, using the 37,38,39 one of three channels, but how can we know which is it? Or is it three channels is polling?

CodePudding user response:

Three radio channel respectively is 37,38,39 broadcasting channel; Corresponding to 2402 MHZ; 2440 MHZ. 2480 MHZ, it is not fixed, so reduce the interference

CodePudding user response:

What circumstances need to use the channel, how to feel like I was useless to the ah, continue to learn

CodePudding user response:

37,38,39 which can be configured to use channel and soc can choose according to certain rules in frequency hopping radio channels, these channels are generally used as device discovery and link, ibeacon use broadcast channel to broadcast information, are generally three channels are selected

CodePudding user response:

Radio equipment will be automatically sent three channels broadcast, of course, you can use the fixed channel broadcast, the software can be configured on your application actually don't need to pay attention to this one, as long as can scan to get the data

CodePudding user response:

Small resistance in series in power end, I use the oscilloscope observation over voltage transformer for the analysis of working condition, seen you have 3 small sharp radio, proving through three channels, in turn, sent out a radio signal