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fixing iso14443b (issue #103):

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- increased DMA_BUFFER_SIZE to avoid occasional circular buffer overflows.
- minor code cleanups
This commit is contained in:
pwpiwi 2015-06-22 21:45:28 +02:00
parent 467340996e
commit 705bfa1058
3 changed files with 33 additions and 64 deletions
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fpga/fpga_hf.bit
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4
fpga/hi_read_rx_xcorr.v
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@ -88,7 +88,7 @@ begin
// These are the correlators: we correlate against in-phase and quadrature
// versions of our reference signal, and keep the (signed) result to
// send out later over the SSP.
if(corr_i_cnt == 7'd0)
if(corr_i_cnt == 6'd0)
begin
if(snoop)
begin
@ -123,7 +123,7 @@ begin
// The logic in hi_simulate.v reports 4 samples per bit. We report two
// (I, Q) pairs per bit, so we should do 2 samples per pair.
if(corr_i_cnt == 6'd31)
if(corr_i_cnt == 6'd32)
after_hysteresis_prev <= after_hysteresis;
// Then the result from last time is serialized and send out to the ARM.