Hello. I have this issue. The text inside the Bluetooth connect button changes color when it connects (from black to blue), and this works. But I want it to turn black again if the connection is lost, and this isn't happening. It stays blue even if I turn off the Bluetooth receiving module. Help.
Are you sure your BtClock2 timer is firing?
Hard to say without seeing more of your blocks. Maybe pload your ,aia?
And, it would be more clear if you were using an if-then-else block set.
Taifun
In addition to what @Ghica and @Taifun have already siad, the way that I've used in my app's is to make a handshake between the client and the server. In other words the connected device shall send periodically (i.e. once each minute) a "live" character that the app shall read. If within two minutes the app does not receive the "live", it is intended as a BT disconnection and the "Disconnection warning" is issued. To actuate the reading every two minutes the app shall set a specific clock.
In detail:
- The device sends every 1 minute a '$' (with a dedicated sending not the same of the data frame).
- A fast clock (clock1) in the app receives anything from the BT. If the character received is a '$' it sets a flag: BTlive = TRUE.
- A slow clock (clock2) in the app (each two minutes) checks the BTlive.
if BTlive == FALSE => declares BT failure
if BTlive == TRUE => declares the BT is live, and sets the flag to FALSE, so the next tick if no '$' has been received in the meanwhile, on the next clock2 tick it declares BT disconnection.
Hoping it helps you.
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(added to FAQ)