That topic has been raised before.
e.g. here
In short: You need a full handshake which is not (always) happening after a sleep or reset since.
But you can force a handshake via Particle.publish("spark/device/session/end", "", PRIVATE);
That topic has been raised before.
e.g. here
In short: You need a full handshake which is not (always) happening after a sleep or reset since.
But you can force a handshake via Particle.publish("spark/device/session/end", "", PRIVATE);