rework iso14443b device functions including FPGA I/Q signal transfer (#669)

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* rework iso14443b device functions
* hf_read_rx_xcorr.v: transfer i/q pair in one 16bit frame
* hi_read_tx.v: invert ssp_dout. When nothing is transferred (ssp_dout=0), this results in no modulation (carrier on)
* adjust arm sources accordingly
* iso14443b.c: switch off carrier after hf 14b sri512read and hf 14b srix4kread
* iso14443b.c: fix DMA circular buffer handling

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pwpiwi 2018-09-16 00:53:28 +02:00 • committed by GitHub

parent 53edb044c0

commit 6a5d4e17f4

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14 changed files with 212 additions and 321 deletions

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