mirror of
https://github.com/RfidResearchGroup/proxmark3.git
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3b2fee43ea
This is a new LF edge detection algorithm for the FPGA. - It uses a low-pass IIR filter to clean the signal (see https://fail0verflow.com/blog/2014/proxmark3-fpga-iir-filter.html) - The algorithm is able to detect consecutive peaks in the same direction - It uses an envelope follower to dynamically adjust the peak thresholds - The main threshold used in the envelope follower can be set from the ARM side fpga/lf_edge_detect.v, fpga/lp20khz_1MSa_iir_filter.v, fpga/min_max_tracker.v: New file. fpga/lo_edge_detect.v, fpga/fpga_lf.v: Modify accordingly. armsrc/apps.h (FPGA_CMD_SET_USER_BYTE1, FPGA_CMD_SET_EDGE_DETECT_THRESHOLD): New FPGA command. fpga/fpga_lf.v: Modify accordingly/Add a 8bit user register. fpga/fpga_lf.bit: Update accordingly. fpga/tests: New directory for testbenches fpga/tests/Makefile: New file. It compiles the testbenches and runs all the tests by default (comparing with the golden output) fpga/tests/tb_lp20khz_1MSa_iir_filter.v, fpga/tests/tb_min_max_tracker.v, fpga/tests/tb_lf_edge_detect.v: New testbenches fpga/tests/plot_edgedetect.py: New script to plot the results from the edge detection tests. fpga/tests/tb_data: New directory for data and golden outputs
88 lines
2.3 KiB
Makefile
88 lines
2.3 KiB
Makefile
#-----------------------------------------------------------------------------
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# Copyright (C) 2014 iZsh <izsh at fail0verflow.com>
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#
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# This code is licensed to you under the terms of the GNU GPL, version 2 or,
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# at your option, any later version. See the LICENSE.txt file for the text of
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# the license.
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#-----------------------------------------------------------------------------
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TEST_OUTDIR = tb_tmp
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TB_SOURCES = \
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tb_lp20khz_1MSa_iir_filter.v \
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tb_min_max_tracker.v \
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tb_lf_edge_detect.v
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TBS = $(TB_SOURCES:.v=.vvp)
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TB_DATA = \
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pcf7931_write1byte_1MSA_data \
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pcf7931_read_1MSA_data
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all: $(TBS) tests
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%.vvp: %.v
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iverilog -I .. -o $@ $<
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clean:
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rm -rf *.vvp $(TEST_OUTDIR)
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tests: tb_lp20khz_1MSa_iir_filter tb_min_max_tracker tb_lf_edge_detect
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tb_lp20khz_1MSa_iir_filter: tb_lp20khz_1MSa_iir_filter.vvp | test_dir
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@printf "Testing $@\n"
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@for d in $(TB_DATA); do \
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$(call run_test,$@.vvp,$$d,in); \
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$(call check_golden,$$d,filtered); \
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done; \
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rm -f $(TEST_OUTDIR)/data.*
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tb_min_max_tracker: tb_min_max_tracker.vvp | test_dir
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@printf "Testing $@\n"
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@for d in $(TB_DATA); do \
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$(call run_test,$@.vvp,$$d,in filtered.gold); \
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$(call check_golden,$$d,min); \
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$(call check_golden,$$d,max); \
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done; \
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rm -f $(TEST_OUTDIR)/data.*
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tb_lf_edge_detect: tb_lf_edge_detect.vvp | test_dir
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@printf "Testing $@\n"
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@for d in $(TB_DATA); do \
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$(call run_test,$@.vvp,$$d,in filtered.gold); \
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$(call check_golden,$$d,min); \
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$(call check_golden,$$d,max); \
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$(call check_golden,$$d,state); \
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$(call check_golden,$$d,toggle); \
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$(call check_golden,$$d,high); \
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$(call check_golden,$$d,highz); \
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$(call check_golden,$$d,lowz); \
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$(call check_golden,$$d,low); \
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done; \
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rm -f $(TEST_OUTDIR)/data.*
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test_dir:
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@if [ ! -d $(TEST_OUTDIR) ] ; then mkdir $(TEST_OUTDIR) ; fi
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.PHONY: all clean
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# $(1) = basename
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# $(2) = extension to check
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check_golden = \
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printf " Checking $(1).$(2)... "; \
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mv $(TEST_OUTDIR)/data.$(2) $(TEST_OUTDIR)/$(1).$(2); \
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if cmp -s tb_data/$(1).$(2).gold $(TEST_OUTDIR)/$(1).$(2); then \
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printf "OK\n"; \
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else \
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printf "ERROR\n"; \
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fi
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# $(1) = vvp file
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# $(2) = data basename
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# $(3) = data extensions to copy
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run_test = \
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env echo " With $(2)... "; \
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cp tb_data/$(2).time $(TEST_OUTDIR); \
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for e in $(3); do cp tb_data/$(2).$$e $(TEST_OUTDIR)/data.$$e; done; \
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./$(1)
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