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Bluetooth HC05 interface issue.

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RenesasT

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Hello All,

Hope you all are doing well.

I have a little query. My query is below:

I have interfaced HC05 Bluetooth module(slave) with my micro controller. Also I have attached second HC05 Bluetooth module(master) with another micro controller. connection and data sending is working fine. To check connection is establish or not, at master end I am reading STATE pin of HC05. It is giving both connection and disconnection status at master end. But what I should do at slave (receiver) end. The state pin at receiver/slave end only gives 0.4V after connection and gives mV after disconnection.

Please suggest, how to identify disconnection notification at slave/ receiver end.

Awaiting for your reply.
 

The state pin at receiver/slave end only gives 0.4V after connection and gives mV after disconnection.
Doesn't seem like specified behavior according to datasheet. Something wrong with your circuit?
 

Hello FvM,

I have changed the BT module and it is working fine. As earlier, I was using ZS-040 (HC05) BT module. Now I am using ZC1629(HC05) BT module. Is there any issue with ZS-040 BT module. ???
 

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