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Title: RFM69, sendACK() fails with bitrate < 9600
Post by: Alexander on March 05, 2017, 11:59:15 AM

Have a good day and thank you for the great product and library!

It looks than Sender do not perceive ACK then bitrate is lower than 9600.
The Receiver successfully gets the packet, sends the ACK but sendWithRetry(...) returns False.
Then I increase bitrate to 9600 or higher everything works perfectly well.

Please let me know if I miss any option to be set, thank you!

Title: Re: RFM69, sendACK() fails with bitrate < 9600
Post by: ChemE on March 05, 2017, 01:35:39 PM

Try changing the transmission timeout up in RFM69.h and see if that fixes things. Line 69 (https://github.com/LowPowerLab/RFM69/blob/master/RFM69.h#L69) is what you are looking to edit try 2000ms.

Code Select

#define RF69_TX_LIMIT_MS 1000

Title: Re: RFM69, sendACK() fails with bitrate < 9600
Post by: Alexander on March 05, 2017, 02:11:34 PM

Thank you, tried 2000ms and even 3000ms, it didn't help :(

Title: Re: RFM69, sendACK() fails with bitrate < 9600
Post by: perky on March 05, 2017, 02:38:59 PM

Try setting it to zero. That means an ACK should be sent immediately.
Mark.

Title: Re: RFM69, sendACK() fails with bitrate < 9600
Post by: Alexander on March 06, 2017, 02:47:51 PM

Thank you, tried 0ms and 100ms, in this case nor ACK neither original packet were received. :(

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Hardware support => Moteino => Topic started by: Alexander on March 05, 2017, 11:59:15 AM