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irregular timestamp interval #62

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@uptools

Hi! We have compiled last version (jan 11-2023) and generated the bitstream and installed it on AndtSDR E310v1.
We can execute srsenb with device_name=iio and connect to the E310 via giga-ethernet, configured for 6 PRB's.

The reader thread (which fills the ringbuffer buckets) is getting the timestamps from the FPGA, although it does not seem to get very stable timestamps, as the difference between them oscilates in the range <28000000,46000000>.

The processing thread is reading from the ring buffer, and finds the magic byte on the ringbuffer headers, although after about 4000 reads, it gets an invalid header error a few times, and then it continues reading but not checking the ringbuffer headers anymore.

Even though we do detect the downlink signal with a spectrum analyzer, the phone cannot see the nodeB.

Are the FPGA generated timestamps having the expected behaviour? Could the erratic FPGA timestamp values cause the inability to be detected by the cellular phone?

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