Add AES2501 driver
This driver works quite nicely. Seems a little too sensitive though (too much black in the standardized image, not enough ridge gap definition). Processing results are quite good, but you need a good enrollment image (i.e. long!). It's best to get such images by pressing harder than you might think necessary and swiping slowly.
This commit is contained in:
Daniel Drake
parent
5485f8031d
commit
2ad14c0212
7
TODO
7
TODO
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@ -11,7 +11,6 @@ NEW DRIVERS
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===========
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Sunplus 895 driver
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AES1610 driver
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AES2501 driver
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AES3400/3500 driver
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ID Mouse driver
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Support for 2nd generation MS devices
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@ -19,7 +18,11 @@ Support for 2nd generation UPEK devices
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IMAGING
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=======
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aes4000 doesn't work very well, maybe due to small minutia count?
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ignore first frame or two with aes2501
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aes2501: increase threshold "sum" for end-of-image detection
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aes2501 gain calibration
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aes4000 gain calibration
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aes4000 resampling
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PPMM parameter to get_minutiae seems to have no effect
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nbis minutiae should be stored in endian-independent format
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@ -2,9 +2,10 @@ lib_LTLIBRARIES = libfprint.la
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UPEKTS_SRC = drivers/upekts.c
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URU4000_SRC = drivers/uru4000.c
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AES2501_SRC = drivers/aes2501.c drivers/aes2501.h
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AES4000_SRC = drivers/aes4000.c
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DRIVER_SRC = $(UPEKTS_SRC) $(URU4000_SRC) $(AES4000_SRC)
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DRIVER_SRC = $(UPEKTS_SRC) $(URU4000_SRC) $(AES2501_SRC) $(AES4000_SRC)
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NBIS_SRC = \
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nbis/include/bozorth.h \
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@ -334,6 +334,7 @@ static struct fp_driver * const primitive_drivers[] = {
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static struct fp_img_driver * const img_drivers[] = {
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&uru4000_driver,
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&aes2501_driver,
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&aes4000_driver,
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};
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614
libfprint/drivers/aes2501.c
Normal file
614
libfprint/drivers/aes2501.c
Normal file
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@ -0,0 +1,614 @@
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/*
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* AuthenTec AES2501 driver for libfprint
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* Copyright (C) 2007 Daniel Drake <dsd@gentoo.org>
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* Copyright (C) 2007 Cyrille Bagard
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* Copyright (C) 2007 Vasily Khoruzhick
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*
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* Based on code from http://home.gna.org/aes2501, relicensed with permission
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#define FP_COMPONENT "aes2501"
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#include <errno.h>
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#include <string.h>
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#include <usb.h>
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#include <fp_internal.h>
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#include "aes2501.h"
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/* FIXME these need checking */
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#define EP_IN (1 | USB_ENDPOINT_IN)
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#define EP_OUT (2 | USB_ENDPOINT_OUT)
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#define BULK_TIMEOUT 4000
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/*
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* The AES2501 is an imaging device using a swipe-type sensor. It samples
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* the finger at preprogrammed intervals, sending a 192x16 frame to the
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* computer.
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* Unless the user is scanning their finger unreasonably fast, the frames
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* *will* overlap. The implementation below detects this overlap and produces
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* a contiguous image as the end result.
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* The fact that the user determines the length of the swipe (and hence the
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* number of useful frames) and also the fact that overlap varies means that
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* images returned from this driver vary in height.
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*/
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#define FRAME_WIDTH 192
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#define FRAME_HEIGHT 16
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#define FRAME_SIZE (FRAME_WIDTH * FRAME_HEIGHT)
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/* maximum number of frames to read during a scan */
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/* FIXME reduce substantially */
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#define MAX_FRAMES 150
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struct aes2501_regwrite {
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unsigned char reg;
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unsigned char value;
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};
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static int write_reg(struct fp_img_dev *dev, unsigned char reg,
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unsigned char value)
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{
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unsigned char data[] = { reg, value };
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int r;
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fp_dbg("%02x=%02x", reg, value);
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r = usb_bulk_write(dev->udev, EP_OUT, data, sizeof(data), BULK_TIMEOUT);
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if (r < 0) {
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fp_err("bulk write error %d", r);
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return r;
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} else if (r < sizeof(data)) {
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fp_err("unexpected short write %d/%d", r, sizeof(data));
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return -EIO;
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}
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return 0;
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}
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static int write_regv(struct fp_img_dev *dev, struct aes2501_regwrite *regs,
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unsigned int num)
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{
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unsigned int i;
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int r;
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/* FIXME: could combine multiple writes into a single transaction */
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for (i = 0; i < num; i++) {
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r = write_reg(dev, regs[i].reg, regs[i].value);
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if (r < 0)
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return r;
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}
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return 0;
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}
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static int read_data(struct fp_img_dev *dev, unsigned char *data, size_t len)
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{
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int r;
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fp_dbg("len=%zd", len);
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r = usb_bulk_read(dev->udev, EP_IN, data, len, BULK_TIMEOUT);
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if (r < 0) {
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fp_err("bulk read error %d", r);
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return r;
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} else if (r < len) {
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fp_err("unexpected short read %d/%zd", r, len);
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return -EIO;
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}
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return 0;
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}
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static int read_regs(struct fp_img_dev *dev, unsigned char *data)
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{
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int r;
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fp_dbg("");
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r = write_reg(dev, AES2501_REG_CTRL2, AES2501_CTRL2_READ_REGS);
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if (r < 0)
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return r;
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return read_data(dev, data, 126);
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}
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static const struct aes2501_regwrite init_1[] = {
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{ AES2501_REG_CTRL1, AES2501_CTRL1_MASTER_RESET },
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{ 0xb0, 0x27 }, /* Reserved? */
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{ AES2501_REG_CTRL1, AES2501_CTRL1_MASTER_RESET },
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{ AES2501_REG_EXCITCTRL, 0x40 },
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{ 0xff, 0x00 }, /* Reserved? */
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{ 0xff, 0x00 }, /* Reserved? */
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{ 0xff, 0x00 }, /* Reserved? */
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{ 0xff, 0x00 }, /* Reserved? */
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{ 0xff, 0x00 }, /* Reserved? */
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{ 0xff, 0x00 }, /* Reserved? */
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{ 0xff, 0x00 }, /* Reserved? */
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{ 0xff, 0x00 }, /* Reserved? */
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{ 0xff, 0x00 }, /* Reserved? */
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{ 0xff, 0x00 }, /* Reserved? */
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{ 0xff, 0x00 }, /* Reserved? */
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{ AES2501_REG_CTRL1, AES2501_CTRL1_MASTER_RESET },
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{ AES2501_REG_EXCITCTRL, 0x40 },
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{ AES2501_REG_DETCTRL,
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AES2501_DETCTRL_DRATE_CONTINUOUS | AES2501_DETCTRL_SDELAY_31_MS },
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{ AES2501_REG_COLSCAN, AES2501_COLSCAN_SRATE_128_US },
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{ AES2501_REG_MEASDRV,
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AES2501_MEASDRV_MDRIVE_0_325 | AES2501_MEASDRV_MEASURE_SQUARE },
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{ AES2501_REG_MEASFREQ, AES2501_MEASFREQ_2M },
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{ AES2501_REG_DEMODPHASE1, DEMODPHASE_NONE },
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{ AES2501_REG_DEMODPHASE2, DEMODPHASE_NONE },
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{ AES2501_REG_CHANGAIN,
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AES2501_CHANGAIN_STAGE2_4X | AES2501_CHANGAIN_STAGE1_16X },
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{ AES2501_REG_ADREFHI, 0x44 },
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{ AES2501_REG_ADREFLO, 0x34 },
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{ AES2501_REG_STRTCOL, 0x16 },
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{ AES2501_REG_ENDCOL, 0x16 },
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{ AES2501_REG_DATFMT, AES2501_DATFMT_BIN_IMG | 0x08 },
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{ AES2501_REG_TREG1, 0x70 },
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{ 0xa2, 0x02 },
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{ 0xa7, 0x00 },
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{ AES2501_REG_TREGC, AES2501_TREGC_ENABLE },
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{ AES2501_REG_TREGD, 0x1a },
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{ AES2501_REG_CTRL1, AES2501_CTRL1_REG_UPDATE },
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{ AES2501_REG_CTRL2, AES2501_CTRL2_SET_ONE_SHOT },
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{ AES2501_REG_LPONT, AES2501_LPONT_MIN_VALUE },
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};
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static const struct aes2501_regwrite init_2[] = {
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{ AES2501_REG_CTRL1, AES2501_CTRL1_MASTER_RESET },
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{ AES2501_REG_EXCITCTRL, 0x40 },
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{ AES2501_REG_CTRL1, AES2501_CTRL1_MASTER_RESET },
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{ AES2501_REG_AUTOCALOFFSET, 0x41 },
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{ AES2501_REG_EXCITCTRL, 0x42 },
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{ AES2501_REG_DETCTRL, 0x53 },
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{ AES2501_REG_CTRL1, AES2501_CTRL1_REG_UPDATE },
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};
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static const struct aes2501_regwrite init_3[] = {
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{ 0xff, 0x00 },
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{ AES2501_REG_CTRL1, AES2501_CTRL1_MASTER_RESET },
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{ AES2501_REG_AUTOCALOFFSET, 0x41 },
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{ AES2501_REG_EXCITCTRL, 0x42 },
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{ AES2501_REG_DETCTRL, 0x53 },
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{ AES2501_REG_CTRL1, AES2501_CTRL1_REG_UPDATE },
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};
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static const struct aes2501_regwrite init_4[] = {
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{ AES2501_REG_CTRL1, AES2501_CTRL1_MASTER_RESET },
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{ AES2501_REG_EXCITCTRL, 0x40 },
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{ 0xb0, 0x27 },
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{ AES2501_REG_ENDROW, 0x0a },
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{ AES2501_REG_CTRL1, AES2501_CTRL1_REG_UPDATE },
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{ AES2501_REG_DETCTRL, 0x45 },
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{ AES2501_REG_AUTOCALOFFSET, 0x41 },
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};
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static const struct aes2501_regwrite init_5[] = {
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{ 0xb0, 0x27 },
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{ AES2501_REG_CTRL1, AES2501_CTRL1_MASTER_RESET },
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{ AES2501_REG_EXCITCTRL, 0x40 },
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{ 0xff, 0x00 },
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{ AES2501_REG_CTRL1, AES2501_CTRL1_MASTER_RESET },
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{ AES2501_REG_EXCITCTRL, 0x40 },
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{ AES2501_REG_CTRL1, AES2501_CTRL1_MASTER_RESET },
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{ AES2501_REG_EXCITCTRL, 0x40 },
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{ AES2501_REG_CTRL1, AES2501_CTRL1_MASTER_RESET },
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{ AES2501_REG_EXCITCTRL, 0x40 },
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{ AES2501_REG_CTRL1, AES2501_CTRL1_MASTER_RESET },
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{ AES2501_REG_EXCITCTRL, 0x40 },
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{ AES2501_REG_CTRL1, AES2501_CTRL1_MASTER_RESET },
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{ AES2501_REG_EXCITCTRL, 0x40 },
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{ AES2501_REG_CTRL1, AES2501_CTRL1_SCAN_RESET },
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{ AES2501_REG_CTRL1, AES2501_CTRL1_SCAN_RESET },
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};
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static int do_init(struct fp_img_dev *dev)
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{
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unsigned char buffer[128];
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int r;
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int i;
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/* part 1, probably not needed */
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r = write_regv(dev, init_1, ARRAY_SIZE(init_1));
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if (r < 0)
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return r;
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r = read_data(dev, buffer, 20);
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if (r < 0)
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return r;
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/* part 2 */
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r = write_regv(dev, init_2, ARRAY_SIZE(init_2));
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if (r < 0)
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return r;
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r = read_regs(dev, buffer);
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if (r < 0)
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return r;
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/* part 3 */
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fp_dbg("reg 0xaf = %x", buffer[0x5f]);
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i = 0;
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while (buffer[0x5f] == 0x6b) {
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r = write_regv(dev, init_3, ARRAY_SIZE(init_3));
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if (r < 0)
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return r;
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r = read_regs(dev, buffer);
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if (r < 0)
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return r;
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if (++i == 13)
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break;
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}
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/* part 4 */
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r = write_regv(dev, init_4, ARRAY_SIZE(init_4));
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if (r < 0)
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return r;
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/* part 5 */
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return write_regv(dev, init_5, ARRAY_SIZE(init_5));
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}
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static int dev_init(struct fp_img_dev *dev, unsigned long driver_data)
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{
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int r;
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r = usb_claim_interface(dev->udev, 0);
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if (r < 0) {
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fp_err("could not claim interface 0");
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return r;
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}
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/* FIXME check endpoints */
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return do_init(dev);
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}
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static void dev_exit(struct fp_img_dev *dev)
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{
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usb_release_interface(dev->udev, 0);
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}
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static const struct aes2501_regwrite finger_det_reqs[] = {
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{ AES2501_REG_CTRL1, AES2501_CTRL1_MASTER_RESET },
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{ AES2501_REG_EXCITCTRL, 0x40 },
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{ AES2501_REG_DETCTRL,
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AES2501_DETCTRL_DRATE_CONTINUOUS | AES2501_DETCTRL_SDELAY_31_MS },
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{ AES2501_REG_COLSCAN, AES2501_COLSCAN_SRATE_128_US },
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{ AES2501_REG_MEASDRV, AES2501_MEASDRV_MDRIVE_0_325 | AES2501_MEASDRV_MEASURE_SQUARE },
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{ AES2501_REG_MEASFREQ, AES2501_MEASFREQ_2M },
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{ AES2501_REG_DEMODPHASE1, DEMODPHASE_NONE },
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{ AES2501_REG_DEMODPHASE2, DEMODPHASE_NONE },
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{ AES2501_REG_CHANGAIN,
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AES2501_CHANGAIN_STAGE2_4X | AES2501_CHANGAIN_STAGE1_16X },
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{ AES2501_REG_ADREFHI, 0x44 },
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{ AES2501_REG_ADREFLO, 0x34 },
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{ AES2501_REG_STRTCOL, 0x16 },
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{ AES2501_REG_ENDCOL, 0x16 },
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{ AES2501_REG_DATFMT, AES2501_DATFMT_BIN_IMG | 0x08 },
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{ AES2501_REG_TREG1, 0x70 },
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{ 0xa2, 0x02 },
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{ 0xa7, 0x00 },
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{ AES2501_REG_TREGC, AES2501_TREGC_ENABLE },
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{ AES2501_REG_TREGD, 0x1a },
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{ AES2501_REG_CTRL1, AES2501_CTRL1_REG_UPDATE },
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{ AES2501_REG_CTRL2, AES2501_CTRL2_SET_ONE_SHOT },
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{ AES2501_REG_LPONT, AES2501_LPONT_MIN_VALUE },
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};
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static int detect_finger(struct fp_img_dev *dev)
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{
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unsigned char buffer[22];
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int r;
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int i;
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int sum = 0;
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r = write_regv(dev, finger_det_reqs, ARRAY_SIZE(finger_det_reqs));
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if (r < 0)
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return r;
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r = read_data(dev, buffer, 20);
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if (r < 0)
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return r;
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for (i = 1; i < 9; i++)
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sum += (buffer[i] & 0xf) + (buffer[i] >> 4);
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return sum > 20;
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}
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static int await_finger_on(struct fp_img_dev *dev)
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{
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int r;
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do {
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r = detect_finger(dev);
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} while (r == 0);
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return (r < 0) ? r : 0;
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}
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/* Read the value of a specific register from a register dump */
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static int regval_from_dump(unsigned char *data, uint8_t target)
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{
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if (*data != FIRST_AES2501_REG) {
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fp_err("not a register dump");
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return -EILSEQ;
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}
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if (!(FIRST_AES2501_REG <= target && target <= LAST_AES2501_REG)) {
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fp_err("out of range");
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return -EINVAL;
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}
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target -= FIRST_AES2501_REG;
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target *= 2;
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return data[target + 1];
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}
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static int sum_histogram_values(unsigned char *data, uint8_t threshold)
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{
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int r = 0;
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int i;
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uint16_t *histogram = (uint16_t *)(data + 1);
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if (*data != 0xde)
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return -EILSEQ;
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if (threshold > 0x0f)
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return -EINVAL;
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/* FIXME endianness */
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for (i = threshold; i < 16; i++)
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r += histogram[i];
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return r;
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}
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/* find overlapping parts of frames */
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static unsigned int find_overlap(unsigned char *first_frame,
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unsigned char *second_frame)
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{
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unsigned int dy;
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unsigned int min_error = 255 * FRAME_SIZE;
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unsigned int not_overlapped_height = 0;
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for (dy = 0; dy < FRAME_HEIGHT; dy++) {
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/* Calculating difference (error) between parts of frames */
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unsigned int i;
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unsigned int error = 0;
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for (i = 0; i < FRAME_WIDTH * (FRAME_HEIGHT - dy); i++) {
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/* Using ? operator to avoid abs function */
|
||||
error += first_frame[i] > second_frame[i] ?
|
||||
(first_frame[i] - second_frame[i]) :
|
||||
(second_frame[i] - first_frame[i]);
|
||||
}
|
||||
|
||||
/* Normalize error */
|
||||
error *= 15;
|
||||
error /= i;
|
||||
if (error < min_error) {
|
||||
min_error = error;
|
||||
not_overlapped_height = dy;
|
||||
}
|
||||
first_frame += FRAME_WIDTH;
|
||||
}
|
||||
|
||||
return not_overlapped_height;
|
||||
}
|
||||
|
||||
/* assemble a series of frames into a single image */
|
||||
static unsigned int assemble(unsigned char *input, unsigned char *output,
|
||||
int num_strips)
|
||||
{
|
||||
uint8_t *assembled = output;
|
||||
int frame;
|
||||
uint32_t image_height = FRAME_HEIGHT;
|
||||
|
||||
if (num_strips < 1)
|
||||
return 0;
|
||||
|
||||
/* Rotating given data by 90 degrees
|
||||
* Taken from document describing aes2501 image format
|
||||
* TODO: move reversing detection here */
|
||||
|
||||
for (frame = 0; frame < num_strips; frame++) {
|
||||
int column;
|
||||
for (column = 0; column < FRAME_WIDTH; column++) {
|
||||
int row;
|
||||
for (row = 0; row < (FRAME_HEIGHT / 2); row++) {
|
||||
output[FRAME_WIDTH * ( 2 * row) + column] = *input & 0x0F;
|
||||
output[FRAME_WIDTH * ( 2 * row + 1) + column] = *input >> 4;
|
||||
input++;
|
||||
}
|
||||
}
|
||||
|
||||
output += FRAME_SIZE;
|
||||
}
|
||||
|
||||
/* Detecting where frames overlaped */
|
||||
output = assembled;
|
||||
for (frame = 1; frame < num_strips; frame++) {
|
||||
int not_overlapped;
|
||||
|
||||
output += FRAME_SIZE;
|
||||
not_overlapped = find_overlap(assembled, output);
|
||||
image_height += not_overlapped;
|
||||
assembled += FRAME_WIDTH * not_overlapped;
|
||||
memcpy(assembled, output, FRAME_SIZE);
|
||||
}
|
||||
return image_height;
|
||||
}
|
||||
|
||||
static const struct aes2501_regwrite capture_reqs_1[] = {
|
||||
{ AES2501_REG_CTRL1, AES2501_CTRL1_MASTER_RESET },
|
||||
{ AES2501_REG_EXCITCTRL, 0x40 },
|
||||
{ AES2501_REG_DETCTRL,
|
||||
AES2501_DETCTRL_SDELAY_31_MS | AES2501_DETCTRL_DRATE_CONTINUOUS },
|
||||
{ AES2501_REG_COLSCAN, AES2501_COLSCAN_SRATE_128_US },
|
||||
{ AES2501_REG_DEMODPHASE2, 0x7c },
|
||||
{ AES2501_REG_MEASDRV,
|
||||
AES2501_MEASDRV_MEASURE_SQUARE | AES2501_MEASDRV_MDRIVE_0_325 },
|
||||
{ AES2501_REG_DEMODPHASE1, 0x24 },
|
||||
{ AES2501_REG_CHWORD1, 0x00 },
|
||||
{ AES2501_REG_CHWORD2, 0x6c },
|
||||
{ AES2501_REG_CHWORD3, 0x09 },
|
||||
{ AES2501_REG_CHWORD4, 0x54 },
|
||||
{ AES2501_REG_CHWORD5, 0x78 },
|
||||
{ 0xa2, 0x02 },
|
||||
{ 0xa7, 0x00 },
|
||||
{ 0xb6, 0x26 },
|
||||
{ 0xb7, 0x1a },
|
||||
{ AES2501_REG_CTRL1, AES2501_CTRL1_REG_UPDATE },
|
||||
{ AES2501_REG_IMAGCTRL,
|
||||
AES2501_IMAGCTRL_TST_REG_ENABLE | AES2501_IMAGCTRL_HISTO_DATA_ENABLE |
|
||||
AES2501_IMAGCTRL_IMG_DATA_DISABLE },
|
||||
{ AES2501_REG_STRTCOL, 0x10 },
|
||||
{ AES2501_REG_ENDCOL, 0x1f },
|
||||
{ AES2501_REG_CHANGAIN,
|
||||
AES2501_CHANGAIN_STAGE1_2X | AES2501_CHANGAIN_STAGE2_2X },
|
||||
{ AES2501_REG_ADREFHI, 0x70 },
|
||||
{ AES2501_REG_ADREFLO, 0x20 },
|
||||
{ AES2501_REG_CTRL2, AES2501_CTRL2_SET_ONE_SHOT },
|
||||
{ AES2501_REG_LPONT, AES2501_LPONT_MIN_VALUE },
|
||||
};
|
||||
|
||||
static const struct aes2501_regwrite capture_reqs_2[] = {
|
||||
{ AES2501_REG_IMAGCTRL,
|
||||
AES2501_IMAGCTRL_TST_REG_ENABLE | AES2501_IMAGCTRL_HISTO_DATA_ENABLE |
|
||||
AES2501_IMAGCTRL_IMG_DATA_DISABLE },
|
||||
{ AES2501_REG_STRTCOL, 0x10 },
|
||||
{ AES2501_REG_ENDCOL, 0x1f },
|
||||
{ AES2501_REG_CHANGAIN, AES2501_CHANGAIN_STAGE1_16X },
|
||||
{ AES2501_REG_ADREFHI, 0x70 },
|
||||
{ AES2501_REG_ADREFLO, 0x20 },
|
||||
{ AES2501_REG_CTRL2, AES2501_CTRL2_SET_ONE_SHOT },
|
||||
};
|
||||
|
||||
static const struct aes2501_regwrite strip_scan_reqs[] = {
|
||||
{ AES2501_REG_IMAGCTRL,
|
||||
AES2501_IMAGCTRL_TST_REG_ENABLE | AES2501_IMAGCTRL_HISTO_DATA_ENABLE },
|
||||
{ AES2501_REG_STRTCOL, 0x00 },
|
||||
{ AES2501_REG_ENDCOL, 0x2f },
|
||||
{ AES2501_REG_CHANGAIN, AES2501_CHANGAIN_STAGE1_16X },
|
||||
{ AES2501_REG_ADREFHI, 0x5b },
|
||||
{ AES2501_REG_ADREFLO, 0x20 },
|
||||
{ AES2501_REG_CTRL2, AES2501_CTRL2_SET_ONE_SHOT },
|
||||
};
|
||||
|
||||
static int capture(struct fp_img_dev *dev, gboolean unconditional,
|
||||
struct fp_img **ret)
|
||||
{
|
||||
int r;
|
||||
struct fp_img *img;
|
||||
unsigned int nstrips;
|
||||
unsigned char *cooked;
|
||||
unsigned char *imgptr;
|
||||
unsigned char buf[1705];
|
||||
int sum;
|
||||
int i;
|
||||
|
||||
/* FIXME can do better here in terms of buffer management? */
|
||||
fp_dbg("");
|
||||
|
||||
r = write_regv(dev, capture_reqs_1, ARRAY_SIZE(capture_reqs_1));
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
r = read_data(dev, buf, 159);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
r = write_regv(dev, capture_reqs_2, ARRAY_SIZE(capture_reqs_2));
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
r = read_data(dev, buf, 159);
|
||||
if (r < 0)
|
||||
return r;
|
||||
|
||||
/* FIXME: use histogram data above for gain calibration (0x8e xx) */
|
||||
|
||||
img = fpi_img_new((3 * MAX_FRAMES * FRAME_SIZE) / 2);
|
||||
imgptr = img->data;
|
||||
cooked = imgptr + (MAX_FRAMES * FRAME_SIZE) / 2;
|
||||
|
||||
for (nstrips = 0; nstrips < MAX_FRAMES; nstrips++) {
|
||||
int threshold;
|
||||
|
||||
r = write_regv(dev, strip_scan_reqs, ARRAY_SIZE(strip_scan_reqs));
|
||||
if (r < 0)
|
||||
goto err;
|
||||
r = read_data(dev, buf, 1705);
|
||||
if (r < 0)
|
||||
goto err;
|
||||
memcpy(imgptr, buf + 1, 192*8);
|
||||
imgptr += 192*8;
|
||||
|
||||
threshold = regval_from_dump((buf + 1 + 192*8 + 1 + 16*2 + 1 + 8),
|
||||
AES2501_REG_DATFMT);
|
||||
if (threshold < 0) {
|
||||
r = threshold;
|
||||
goto err;
|
||||
}
|
||||
|
||||
sum = sum_histogram_values((buf + 1 + 192*8), threshold & 0x0f);
|
||||
if (sum < 0) {
|
||||
r = sum;
|
||||
goto err;
|
||||
}
|
||||
fp_dbg("sum=%d", sum);
|
||||
if (sum == 0)
|
||||
break;
|
||||
}
|
||||
if (nstrips == MAX_FRAMES)
|
||||
fp_warn("swiping finger too slow?");
|
||||
|
||||
img->height = assemble(img->data, cooked, nstrips);
|
||||
for (i = 0; i < img->height * FRAME_WIDTH; i++)
|
||||
img->data[i] = (cooked[i] << 4) | 0xf;
|
||||
|
||||
img = fpi_img_resize(img, img->height * FRAME_WIDTH);
|
||||
img->flags = FP_IMG_V_FLIPPED | FP_IMG_H_FLIPPED | FP_IMG_COLORS_INVERTED;
|
||||
*ret = img;
|
||||
return 0;
|
||||
err:
|
||||
g_free(img);
|
||||
return r;
|
||||
}
|
||||
|
||||
static const struct usb_id id_table[] = {
|
||||
{ .vendor = 0x08ff, .product = 0x2580 },
|
||||
{ 0, 0, 0, },
|
||||
};
|
||||
|
||||
struct fp_img_driver aes2501_driver = {
|
||||
.driver = {
|
||||
.id = 4,
|
||||
.name = FP_COMPONENT,
|
||||
.full_name = "AuthenTec AES2501",
|
||||
.id_table = id_table,
|
||||
},
|
||||
.flags = 0,
|
||||
.img_height = -1,
|
||||
.img_width = 192,
|
||||
|
||||
/* temporarily lowered until image quality improves */
|
||||
.bz3_threshold = 20,
|
||||
|
||||
.init = dev_init,
|
||||
.exit = dev_exit,
|
||||
.await_finger_on = await_finger_on,
|
||||
.capture = capture,
|
||||
};
|
||||
|
||||
170
libfprint/drivers/aes2501.h
Normal file
170
libfprint/drivers/aes2501.h
Normal file
|
|
@ -0,0 +1,170 @@
|
|||
/*
|
||||
* AuthenTec AES2501 driver for libfprint
|
||||
* Copyright (C) 2007 Cyrille Bagard
|
||||
*
|
||||
* Based on code from http://home.gna.org/aes2501, relicensed with permission
|
||||
*
|
||||
* This library is free software; you can redistribute it and/or
|
||||
* modify it under the terms of the GNU Lesser General Public
|
||||
* License as published by the Free Software Foundation; either
|
||||
* version 2.1 of the License, or (at your option) any later version.
|
||||
*
|
||||
* This library is distributed in the hope that it will be useful,
|
||||
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
||||
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
||||
* Lesser General Public License for more details.
|
||||
*
|
||||
* You should have received a copy of the GNU Lesser General Public
|
||||
* License along with this library; if not, write to the Free Software
|
||||
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
|
||||
*/
|
||||
|
||||
#ifndef __AES2501_H
|
||||
#define __AES2501_H
|
||||
|
||||
enum aes2501_regs {
|
||||
AES2501_REG_CTRL1 = 0x80,
|
||||
AES2501_REG_CTRL2 = 0x81,
|
||||
AES2501_REG_EXCITCTRL = 0x82, /* excitation control */
|
||||
AES2501_REG_DETCTRL = 0x83, /* detect control */
|
||||
AES2501_REG_COLSCAN = 0x88, /* column scan rate register */
|
||||
AES2501_REG_MEASDRV = 0x89, /* measure drive */
|
||||
AES2501_REG_MEASFREQ = 0x8a, /* measure frequency */
|
||||
AES2501_REG_DEMODPHASE1 = 0x8d,
|
||||
AES2501_REG_DEMODPHASE2 = 0x8c,
|
||||
AES2501_REG_CHANGAIN = 0x8e, /* channel gain */
|
||||
AES2501_REG_ADREFHI = 0x91, /* A/D reference high */
|
||||
AES2501_REG_ADREFLO = 0x92, /* A/D reference low */
|
||||
AES2501_REG_STRTROW = 0x93, /* start row */
|
||||
AES2501_REG_ENDROW = 0x94, /* end row */
|
||||
AES2501_REG_STRTCOL = 0x95, /* start column */
|
||||
AES2501_REG_ENDCOL = 0x96, /* end column */
|
||||
AES2501_REG_DATFMT = 0x97, /* data format */
|
||||
AES2501_REG_IMAGCTRL = 0x98, /* image data */
|
||||
AES2501_REG_STAT = 0x9a,
|
||||
AES2501_REG_CHWORD1 = 0x9b, /* challenge word 1 */
|
||||
AES2501_REG_CHWORD2 = 0x9c,
|
||||
AES2501_REG_CHWORD3 = 0x9d,
|
||||
AES2501_REG_CHWORD4 = 0x9e,
|
||||
AES2501_REG_CHWORD5 = 0x9f,
|
||||
AES2501_REG_TREG1 = 0xa1, /* test register 1 */
|
||||
AES2501_REG_AUTOCALOFFSET = 0xa8,
|
||||
AES2501_REG_TREGC = 0xac,
|
||||
AES2501_REG_TREGD = 0xad,
|
||||
AES2501_REG_LPONT = 0xb4, /* low power oscillator on time */
|
||||
};
|
||||
|
||||
#define FIRST_AES2501_REG AES2501_REG_CTRL1
|
||||
#define LAST_AES2501_REG AES2501_REG_CHWORD5
|
||||
|
||||
#define AES2501_CTRL1_MASTER_RESET (1<<0)
|
||||
#define AES2501_CTRL1_SCAN_RESET (1<<1) /* stop + restart scan sequencer */
|
||||
/* 1 = continuously updated, 0 = updated prior to starting a scan */
|
||||
#define AES2501_CTRL1_REG_UPDATE (1<<2)
|
||||
|
||||
/* 1 = continuous scans, 0 = single scans */
|
||||
#define AES2501_CTRL2_CONTINUOUS 0x01
|
||||
#define AES2501_CTRL2_READ_REGS 0x02 /* dump registers */
|
||||
#define AES2501_CTRL2_SET_ONE_SHOT 0x04
|
||||
#define AES2501_CTRL2_CLR_ONE_SHOT 0x08
|
||||
#define AES2501_CTRL2_READ_ID 0x10
|
||||
|
||||
enum aes2501_detection_rate {
|
||||
/* rate of detection cycles: */
|
||||
AES2501_DETCTRL_DRATE_CONTINUOUS = 0x00, /* continuously */
|
||||
AES2501_DETCTRL_DRATE_16_MS = 0x01, /* every 16.62ms */
|
||||
AES2501_DETCTRL_DRATE_31_MS = 0x02, /* every 31.24ms */
|
||||
AES2501_DETCTRL_DRATE_62_MS = 0x03, /* every 62.50ms */
|
||||
AES2501_DETCTRL_DRATE_125_MS = 0x04, /* every 125.0ms */
|
||||
AES2501_DETCTRL_DRATE_250_MS = 0x05, /* every 250.0ms */
|
||||
AES2501_DETCTRL_DRATE_500_MS = 0x06, /* every 500.0ms */
|
||||
AES2501_DETCTRL_DRATE_1_S = 0x07, /* every 1s */
|
||||
};
|
||||
|
||||
enum aes2501_settling_delay {
|
||||
AES2501_DETCTRL_SDELAY_31_MS = 0x00, /* 31.25ms */
|
||||
AES2501_DETCTRL_SSDELAY_62_MS = 0x10, /* 62.5ms */
|
||||
AES2501_DETCTRL_SSDELAY_125_MS = 0x20, /* 125ms */
|
||||
AES2501_DETCTRL_SSDELAY_250_MS = 0x30 /* 250ms */
|
||||
};
|
||||
|
||||
enum aes2501_col_scan_rate {
|
||||
AES2501_COLSCAN_SRATE_32_US = 0x00, /* 32us */
|
||||
AES2501_COLSCAN_SRATE_64_US = 0x01, /* 64us */
|
||||
AES2501_COLSCAN_SRATE_128_US = 0x02, /* 128us */
|
||||
AES2501_COLSCAN_SRATE_256_US = 0x03, /* 256us */
|
||||
AES2501_COLSCAN_SRATE_512_US = 0x04, /* 512us */
|
||||
AES2501_COLSCAN_SRATE_1024_US = 0x05, /* 1024us */
|
||||
AES2501_COLSCAN_SRATE_2048_US = 0x06, /* 2048us */
|
||||
|
||||
};
|
||||
|
||||
enum aes2501_mesure_drive {
|
||||
AES2501_MEASDRV_MDRIVE_0_325 = 0x00, /* 0.325 Vpp */
|
||||
AES2501_MEASDRV_MDRIVE_0_65 = 0x01, /* 0.65 Vpp */
|
||||
AES2501_MEASDRV_MDRIVE_1_3 = 0x02, /* 1.3 Vpp */
|
||||
AES2501_MEASDRV_MDRIVE_2_6 = 0x03 /* 2.6 Vpp */
|
||||
|
||||
};
|
||||
|
||||
/* Select (1=square | 0=sine) wave drive during measure */
|
||||
#define AES2501_MEASDRV_SQUARE 0x20
|
||||
/* 0 = use mesure drive setting, 1 = when sine wave is selected */
|
||||
#define AES2501_MEASDRV_MEASURE_SQUARE 0x10
|
||||
|
||||
enum aes2501_measure_freq {
|
||||
AES2501_MEASFREQ_125K = 0x01, /* 125 kHz */
|
||||
AES2501_MEASFREQ_250K = 0x02, /* 250 kHz */
|
||||
AES2501_MEASFREQ_500K = 0x03, /* 500 kHz */
|
||||
AES2501_MEASFREQ_1M = 0x04, /* 1 MHz */
|
||||
AES2501_MEASFREQ_2M = 0x05 /* 2 MHz */
|
||||
};
|
||||
|
||||
#define DEMODPHASE_NONE 0x00
|
||||
#define DEMODPHASE_180_00 0x40 /* 180 degrees */
|
||||
#define DEMODPHASE_2_81 0x01 /* 2.8125 degrees */
|
||||
|
||||
#define AES2501_REG_DEMODPHASE1 0x8d
|
||||
#define DEMODPHASE_1_40 0x40 /* 1.40625 degrees */
|
||||
#define DEMODPHASE_0_02 0x01 /* 0.02197256 degrees */
|
||||
|
||||
enum aes2501_sensor_gain1 {
|
||||
AES2501_CHANGAIN_STAGE1_2X = 0x00, /* 2x */
|
||||
AES2501_CHANGAIN_STAGE1_4X = 0x01, /* 4x */
|
||||
AES2501_CHANGAIN_STAGE1_8X = 0x02, /* 8x */
|
||||
AES2501_CHANGAIN_STAGE1_16X = 0x03 /* 16x */
|
||||
};
|
||||
|
||||
enum aes2501_sensor_gain2 {
|
||||
AES2501_CHANGAIN_STAGE2_2X = 0x00, /* 2x */
|
||||
AES2501_CHANGAIN_STAGE2_4X = 0x10, /* 4x */
|
||||
AES2501_CHANGAIN_STAGE2_8X = 0x20, /* 8x */
|
||||
AES2501_CHANGAIN_STAGE2_16X = 0x30 /* 16x */
|
||||
};
|
||||
|
||||
#define AES2501_DATFMT_EIGHT 0x40 /* 1 = 8-bit data, 0 = 4-bit data */
|
||||
#define AES2501_DATFMT_LOW_RES 0x20
|
||||
#define AES2501_DATFMT_BIN_IMG 0x10
|
||||
|
||||
/* don't send image or authentication messages when imaging */
|
||||
#define AES2501_IMAGCTRL_IMG_DATA_DISABLE 0x01
|
||||
/* send histogram when imaging */
|
||||
#define AES2501_IMAGCTRL_HISTO_DATA_ENABLE 0x02
|
||||
/* send histogram at end of each row rather than each scan */
|
||||
#define AES2501_IMAGCTRL_HISTO_EACH_ROW 0x04
|
||||
/* send full image array rather than 64x64 center */
|
||||
#define AES2501_IMAGCTRL_HISTO_FULL_ARRAY 0x08
|
||||
/* return registers before data (rather than after) */
|
||||
#define AES2501_IMAGCTRL_REG_FIRST 0x10
|
||||
/* return test registers with register dump */
|
||||
#define AES2501_IMAGCTRL_TST_REG_ENABLE 0x20
|
||||
|
||||
#define AES2501_CHWORD1_IS_FINGER 0x01 /* If set, finger is present */
|
||||
|
||||
/* Enable the reading of the register in TREGD */
|
||||
#define AES2501_TREGC_ENABLE 0x01
|
||||
|
||||
#define AES2501_LPONT_MIN_VALUE 0x00 /* 0 ms */
|
||||
#define AES2501_LPONT_MAX_VALUE 0x1f /* About 16 ms */
|
||||
|
||||
#endif /* __AES2501_H */
|
||||
|
|
@ -141,6 +141,7 @@ struct fp_img_driver {
|
|||
|
||||
extern struct fp_driver upekts_driver;
|
||||
extern struct fp_img_driver uru4000_driver;
|
||||
extern struct fp_img_driver aes2501_driver;
|
||||
extern struct fp_img_driver aes4000_driver;
|
||||
|
||||
void fpi_img_driver_setup(struct fp_img_driver *idriver);
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Reference in a new issue