Return the status of MINIEXP1 & MINIEXP2 in readStream

[pothosware]

Return the status of MINIEXP1 & MINIEXP2 in readStream

[KarlL2]

Hi Josh,

for now I modified bladeRF_SoapySDR::readStream to add

flags = md.status & (BLADERF_META_FLAG_RX_HW_UNDERFLOW | BLADERF_META_FLAG_RX_HW_MINIEXP1 | BLADERF_META_FLAG_RX_HW_MINIEXP2);

as I just want those flags.

It should be possible to create flags in Soapy to make sure those flags don't collide with Soapy flags.

I could create a pull request, but I'd like to have you opinion on how to do it first.

[guruofquality]

If you are worried about flags colliding, I would day that the upper 16 bits are pretty much reserved for "advanced" purposes. But you will have to translate the BLADERF_META_FLAG* into something in the upper bits. I have done exactly this to report metadata/bit fields filled into a packet by an FPGA on another SDR and it worked out great FWIW.

I dont really want to add defines in SoapySDR Constants for very esoteric things like BLADERF_META_FLAG_RX_HW_MINIEXP1 So if it came down to it something like SOAPY_SDR_USER_FLAG0, SOAPY_SDR_USER_FLAG1, etc would have to suffice

• https://github.com/pothosware/SoapySDR/blob/master/include/SoapySDR/Constants.h

Its interesting that there is a underflow associated with the rx as metadata. Are there also valid samples? If it can be treated like an error returning an error code would suffice: https://github.com/pothosware/SoapySDR/blob/master/include/SoapySDR/Errors.h#L68 I might not trust the samples to be good after an underflow on rx (whatever that means).

[KarlL2]

Hi Josh,

I added flags SOAPY_SDR_USER_FLAG0 up to SOAPY_SDR_USER_FLAG4 in https://github.com/pothosware/SoapySDR/blob/master/include/SoapySDR/Constants.h as you advised (see pothosware/SoapySDR#353).

I then used those 1st 2 flags to surface BLADERF_META_FLAG_RX_HW_MINIEXP1 & 2 (see #49).

I didn't surface BLADERF_META_FLAG_RX_HW_UNDERFLOW as we don't really know when it happens and what to do with it.