CODEWITHSUNDEEP
xbee
Alex
Alex

Reputation: 39

XBee S2C fails communcation at some point

I have the following setup:

All above are API mode 1.

My scenario is as follows:

I send at each 5 seconds a 6 byte message from A to B and C. B is instructed to reply to that message with another one of the same size.

After some time, typically 40 - 50 minutes, A no longer receives messages from B. Reads from Serial port are working (Transmit Status messages are received for each message Sent by A). C receives messages as seen in XCTU.

If nothing changes A will never hear from B again.

However if (by some internal logic) B sends a message to A (other than the reply) or if C sends a 6 byte message (same as the one A sends to B and C) to B, suddenly A starts receiving messages from B.

Does anyone know why is this happening?

Upvotes: 0

Views: 118

Answers (1)

Alex
Alex

Reputation: 39

It was the arduino library that we misused. It only works in API Mode 2 and we have the module configured for API Mode 1. (does anyone know why the library has not yet been updated to be used with API Mode 1?)

It was happening only after a while since we have an incremental counter in our message and at some point, that counter reached a value that contained a special character from API Mode 2 perspective.

From XCTU was always running since there was no incremental logic in there.

Many thanks to @tomlogic for his suggestion. Helped a lot!

Upvotes: 1

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