| 1 | function [RxData,RxOTR] = warplab_processRawRxData(RawRxData) |
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| 2 | |
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| 3 | %Mangle the received data |
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| 4 | %Each received sample is a 32-bit value: |
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| 5 | % [OTR_I 0 RX_I OTR_Q 0 RX_Q] |
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| 6 | % OTR_I/OTR_Q: UFix1_0, incidates ADC overflow |
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| 7 | % 0: UFix1_0, always zero |
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| 8 | % RX_I/RX_Q: Fix14_13, raw ADC samples |
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| 9 | |
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| 10 | rxData_I = uint16(bitshift(RawRxData, -16)); |
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| 11 | rxData_Q = uint16(bitand(RawRxData, hex2dec('0000FFFF'))); |
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| 12 | |
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| 13 | rxOTR_I = bitshift(rxData_I, -15); |
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| 14 | rxOTR_Q = bitshift(rxData_Q, -15); |
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| 15 | |
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| 16 | rxData_I = uint16(bitand(rxData_I, hex2dec('3FFF'))); %mask off top two bits |
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| 17 | rxData_Isigns = uint16(bitshift(bitand(rxData_I, hex2dec('2000')), -13)); %get sign bit |
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| 18 | rxData_I = double(typecast(bitor(rxData_I, rxData_Isigns*hex2dec('C000')),'int16'))./2^13; |
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| 19 | |
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| 20 | rxData_Q = uint16(bitand(rxData_Q, hex2dec('3FFF'))); %mask off top two bits |
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| 21 | rxData_Qsigns = uint16(bitshift(bitand(rxData_Q, hex2dec('2000')), -13)); %get sign bit |
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| 22 | rxData_Q = double(typecast(bitor(rxData_Q, rxData_Qsigns*hex2dec('C000')),'int16'))./2^13; |
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| 23 | |
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| 24 | RxData = complex(rxData_I, rxData_Q); |
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| 25 | RxOTR = complex(rxOTR_I, rxOTR_Q); |
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