My rookie assumption of a spi device was that I should be able to connect to it.
And then set a pin high/low when I want to talk to it - i.e. chip select (CS)?
Clearly HM-10 BRK is used to signal a break in communication.
However I though that HM-10 STATE might be CS, but the HM-10 responds regardless of weather STATE is high or low. Any idea's as I want to connect more than one SPI device to my arduino ....
mdr78:
Clearly HM-10 BRK is used to signal a break in communication.
It isn't clear to me at all. Further, in the light of the link you posted, it doesn't get any clearer. These 6-pin modules usually have the same arrangement - power, TxRx, a pin for an external LED, usually labelled STATE, and a pin used to activate the AT-mode, usually labelled KEY or EN.
A picture of the back of the module and a link to where you really got yours would be interesting as, if the sixth pin signals a break in transmission, a question arises about how it is configured in AT-mode.
For all that, the pins you have left disconnected can stay disconnected for normal communications.
You might find the following background notes useful
