I'm trying to implement a burst transfer between to nRF24AP2 devices, but I have serious problems getting it to work. The burst messages are send on a reverse channel to a sensorr device which normally operates as master. After a number of messages, typically between 2 and 1000, I get a TRANSFER_SEQUENCE_NUMBER_ERROR error message back. I have tried UART mode ( 57600 baud ) and byte sync mode, same result. I have monitored the communication lines ( data and handshake ) between my u-processor and the ANT chip with a datalogger. All messages are acknowledged by a RTS signal in UART mode or a SEN signal in sync mode. No messages are send to the ANT chip except for the burst messages. No messages are missing and the sequence numbers are correct. Regardless of the sequence number on further burst messages, the same error message is returned. The problem comes regardless of how many messages ( 8 or less ) are used to prime the burst transfer.
So I have several questions: When does the ANT chip return the error message: When the offending message is received on the serial interface, or when it is being send in the air? How can I stop the burst transfer in an orderly manner after an error? And of course, why does it happen?
The obvious answer to the last question is that there is some error int the sequence number, but it is impossible for me to see such an error in the communication with the chip.
Regards, Klaus Roy-Poulsen
