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xtrx-sdr / images

Pre-built XTRX packages and firmware images
https://www.crowdsupply.com/fairwaves/xtrx
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Data format of Recieved data? #76

Open farhan296 opened 4 years ago

farhan296 commented 4 years ago

Can anyone help me out in understanding the placement of IQ data in the receive buffer? Following is my configuration: xtrx_wire_format_t tx_wire_fmt = XTRX_WF_16; xtrx_host_format_t tx_host_fmt = XTRX_IQ_FLOAT32; xtrx_direction_t dir = XTRX_TRX;

xtrx_wire_format_t rx_wire_fmt = XTRX_WF_16; xtrx_host_format_t rx_host_fmt = XTRX_IQ_FLOAT32;//XTRX_IQ_FLOAT32;

params.dir = dir; params.nflags = 0; params.rx.wfmt = rx_wire_fmt; params.rx.hfmt = rx_host_fmt; params.rx.chs = XTRX_CH_A; params.rx.flags = XTRX_RSP_SISO_MODE; params.rx.paketsize = 8192; params.rx_stream_start = 8192;

params.tx.wfmt = tx_wire_fmt; params.tx.hfmt = tx_host_fmt; params.tx.chs = XTRX_CH_A; params.tx.flags = XTRX_RSP_SISO_MODE|XTRX_RSP_TEST_SIGNAL_A;

xtrx_recv_ex_info_t ri; ri.samples = 28192; ri.buffer_count = 1; ri.buffers = (void const*) buffs; ri.timeout = 1000; ri.flags = 0;

float buffMemIQRd[65536];

I have a float type buffer. How will the IQ data be placed based on the above configuration in SISO Mode? Is there any documentation available? I see there is a serious lack of helping materials and API documentation. buffMemIQRd[0] =? (AI,AQ) buffMemIQRd[1] =? (AI,AQ) buffMemIQRd[2] =? (AI,AQ) buffMemIQRd[3] =? (AI,AQ)

farhan296 commented 4 years ago

@sergforce Can you please clarify, how the data is placed in the receive buffer in both SISO and MIMO modes? Also I would like to know in case of Tx how to place I/Q data in the buffer i.e the position of data AI,AQ or AQ,AI etc for both MIMO and SISO. I would appreciate your help in this regard.

arun1969 commented 3 years ago

In case of Tx IQ Data AI,AQ format. I have tried sending iq data generated by python scrip. https://github.com/jgibbard/iqtool using test_xtrx got success.