fix race condition with receiving messages - #36
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We no longer call receiveBegin() from inside receiveDone() if no data's ready. Previously, if interruptHandler triggerred while receiveDone() was processing, receiveBegin() would wipe out the received data. This could be mitigated with sleeps between loops to decrease the odds of such a scenario, but it's far more reliable to just let the user explicitly call receiveBegin() once they have processed the latest message. This should fix issue etrombly#29
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Have you verified that this works? My transmitter node is an Arduino using LowPowerLab's RFM69 library (latest commit 855889c from March 3rd) and receiver node is an RPi. I've tried your commit and (for me at least) the Arduino transmitter node still doesn't see ACK for ~90% of packets, even though the RPi is definitely receiving them. Transmitting from the RPi to the Arduino works fine. I know it's an issue at the Pi end as I've tried the same radios attached to an Arduino at both ends and it works fine.
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I'll have to set back up a pi to test with. Don't have anything setup right now. |
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We no longer call receiveBegin() from inside receiveDone() if no data's
ready. Previously, if interruptHandler triggerred while receiveDone()
was processing, receiveBegin() would wipe out the received data. This
could be mitigated with sleeps between loops to decrease the odds of
such a scenario, but it's far more reliable to just let the user
explicitly call receiveBegin() once they have processed the latest
message. This should fix issue #29