Hi,
Thanks for your reply
In datasheet you linked are general information only.
I found it earlier but I think it's more advertisement than documentation.
I used AES3500 driver instead of AES4000 but image is still pale.
DATA_BUFLEN is set correctly. When I changed it to value for aes3500, I
got an error:
sync:error [fp_dev_img_capture] unrecognised return code -5
image capture failed, code -22
FRAME_WIDTH is good too becouse fingerprint shape isn't broken.
Earlier I got images clearly black, but now images are pale.
I think it could be a problem with voltage or something related.
Have you any idea which init_reqs could I manipulate to improve quality?
Piotr Jarosz
On 12/01/13 09:33, Juvenn Woo wrote:
Hi Piotr,
The dimension params (DATA_BUFLEN or so) seems not right from your
image. Please have a look at aes3500.c and aes4000.c from latest git repo:
http://cgit.freedesktop.org/libfprint/libfprint
Also, I've found the datasheet if you don't have already, which looks
a lot like aes3500's:
http://www.digchip.com/datasheets/parts/datasheet/566/AES3400.php
--
jv ♫
On Sun, Dec 1, 2013 at 7:14 AM, pietrek -- <[email protected]
<mailto:[email protected]>> wrote:
Hi,
I'm trying to add aes3400 support, but I get pale image(example in
attachment) and enroll fails.
Have you any idea which parameters should I scale to improve image
quality?
Piotr Jarosz
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/*
* Adapted to work with AES3400 by PIETREK [email protected]
* only defines and init_reqs changed
*/
/*
* AuthenTec AES4000 driver for libfprint
* Copyright (C) 2007-2008 Daniel Drake <[email protected]>
*
* 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
*/
#define FP_COMPONENT "aes3400"
#include <errno.h>
#include <glib.h>
#include <libusb.h>
#include <aeslib.h>
#include <fp_internal.h>
#include "driver_ids.h"
#define CTRL_TIMEOUT 1000
#define EP_IN (1 | LIBUSB_ENDPOINT_IN)
#define EP_OUT (2 | LIBUSB_ENDPOINT_OUT)
#define DATA_BUFLEN 0x208d//0x2080
#define NR_SUBARRAYS 8
#define SUBARRAY_LEN 1040//1040
#define IMG_HEIGHT 128
#define IMG_WIDTH 128
#define ENLARGE_FACTOR 2
struct aes3400_dev {
struct libusb_transfer *img_trf;
};
/* TODO: figure out the init_reqs to improve the
* image quality of the device. */
static const struct aes_regwrite init_reqs[] = {
/* master reset */
{ 0x80, 0x01 },
{ 0, 0 },
{ 0x80, 0x00 },
{ 0, 0 },
{ 0x81, 0x00 },
{ 0x80, 0x00 },
{ 0, 0 },
/* scan reset */
{ 0x80, 0x02 },
{ 0, 0 },
{ 0x80, 0x00 },
{ 0, 0 },
/* disable register buffering */
{ 0x80, 0x04 },
{ 0, 0 },
{ 0x80, 0x00 },
{ 0, 0 },
{ 0x81, 0x00 },
{ 0, 0 },
/* windows driver reads registers now (81 02) */
{ 0x80, 0x00 },
{ 0x81, 0x00 },
/* set excitation bias current: 2mhz drive ring frequency,
* 4V drive ring voltage, 16.5mA excitation bias */
{ 0x82, 0x04 },
/* continuously sample drive ring for finger detection,
* 62.50ms debounce delay */
//{ 0x83, 0x13 },
{ 0x83, 0x01 },
{ 0x84, 0x07 }, /* set calibration resistance to 12 kiloohms */
{ 0x85, 0x3d }, /* set calibration capacitance */
{ 0x86, 0x03 }, /* detect drive voltage */
{ 0x87, 0x01 }, /* set detection frequency to 125khz */
{ 0x88, 0x02 }, /* set column scan period */
{ 0x89, 0x02 }, /* set measure drive */
{ 0x8a, 0x33 }, /* set measure frequency and sense amplifier bias */
{ 0x8b, 0x33 }, /* set matrix pattern */
{ 0x8c, 0x0f }, /* set demodulation phase 1 */
{ 0x8d, 0x04 }, /* set demodulation phase 2 */
{ 0x8e, 0x23 }, /* set sensor gain */
{ 0x8f, 0x07 }, /* set image parameters */
{ 0x90, 0x00 }, /* carrier offset null */
{ 0x91, 0x1c }, /* set A/D reference high */
{ 0x92, 0x08 }, /* set A/D reference low */
{ 0x93, 0x00 }, /* set start row to 0 */
{ 0x94, 0x07 }, /* set end row */
{ 0x95, 0x00 }, /* set start column to 0 */
{ 0x96, 0x1f }, /* set end column */
{ 0x97, 0x04 }, /* data format and thresholds */
{ 0x98, 0x28 }, /* image data control */
{ 0x99, 0x00 }, /* disable general purpose outputs */
{ 0x9a, 0x0b }, /* set initial scan state */
{ 0x9b, 0x00 }, /* clear challenge word bits */
{ 0x9c, 0x00 }, /* clear challenge word bits */
{ 0x9d, 0x09 }, /* set some challenge word bits */
{ 0x9e, 0x53 }, /* clear challenge word bits */
{ 0x9f, 0x6b }, /* set some challenge word bits */
{ 0, 0 },
{ 0x80, 0x00 },
{ 0x81, 0x00 },
{ 0, 0 },
{ 0x81, 0x04 },
{ 0, 0 },
{ 0x81, 0x00 },
};
static void do_capture(struct fp_img_dev *dev);
static void img_cb(struct libusb_transfer *transfer)
{
struct fp_img_dev *dev = transfer->user_data;
struct aes3400_dev *aesdev = dev->priv;
unsigned char *ptr = transfer->buffer;
struct fp_img *tmp;
struct fp_img *img;
int i;
if (transfer->status == LIBUSB_TRANSFER_CANCELLED) {
goto err;
} else if (transfer->status != LIBUSB_TRANSFER_COMPLETED) {
fpi_imgdev_session_error(dev, -EIO);
goto err;
} else if (transfer->length != transfer->actual_length) {
fpi_imgdev_session_error(dev, -EPROTO);
goto err;
}
fpi_imgdev_report_finger_status(dev, TRUE);
tmp = fpi_img_new(IMG_WIDTH * IMG_HEIGHT);
tmp->width = IMG_WIDTH;
tmp->height = IMG_HEIGHT;
tmp->flags = FP_IMG_COLORS_INVERTED | FP_IMG_V_FLIPPED | FP_IMG_H_FLIPPED;
for (i = 0; i < NR_SUBARRAYS; i++) {
fp_dbg("subarray header byte %02x", *ptr);
ptr++;
aes_assemble_image(ptr, IMG_WIDTH, 16, tmp->data + (i * IMG_WIDTH * 16));
ptr += SUBARRAY_LEN;
}
/* FIXME: this is an ugly hack to make the image big enough for NBIS
* to process reliably */
img = fpi_im_resize(tmp, ENLARGE_FACTOR, ENLARGE_FACTOR);
fp_img_free(tmp);
fpi_imgdev_image_captured(dev, img);
/* FIXME: rather than assuming finger has gone, we should poll regs until
* it really has, then restart the capture */
fpi_imgdev_report_finger_status(dev, FALSE);
do_capture(dev);
err:
g_free(transfer->buffer);
aesdev->img_trf = NULL;
libusb_free_transfer(transfer);
}
static void do_capture(struct fp_img_dev *dev)
{
struct aes3400_dev *aesdev = dev->priv;
unsigned char *data;
int r;
aesdev->img_trf = libusb_alloc_transfer(0);
if (!aesdev->img_trf) {
fpi_imgdev_session_error(dev, -EIO);
return;
}
data = g_malloc(DATA_BUFLEN);
libusb_fill_bulk_transfer(aesdev->img_trf, dev->udev, EP_IN, data,
DATA_BUFLEN, img_cb, dev, 0);
r = libusb_submit_transfer(aesdev->img_trf);
if (r < 0) {
g_free(data);
libusb_free_transfer(aesdev->img_trf);
aesdev->img_trf = NULL;
fpi_imgdev_session_error(dev, r);
}
}
static void init_reqs_cb(struct fp_img_dev *dev, int result, void *user_data)
{
fpi_imgdev_activate_complete(dev, result);
if (result == 0)
do_capture(dev);
}
static int dev_activate(struct fp_img_dev *dev, enum fp_imgdev_state state)
{
aes_write_regv(dev, init_reqs, G_N_ELEMENTS(init_reqs), init_reqs_cb, NULL);
return 0;
}
static void dev_deactivate(struct fp_img_dev *dev)
{
struct aes3400_dev *aesdev = dev->priv;
/* FIXME: should wait for cancellation to complete before returning
* from deactivation, otherwise app may legally exit before we've
* cleaned up */
if (aesdev->img_trf)
libusb_cancel_transfer(aesdev->img_trf);
fpi_imgdev_deactivate_complete(dev);
}
static int dev_init(struct fp_img_dev *dev, unsigned long driver_data)
{
int r;
r = libusb_claim_interface(dev->udev, 0);
if (r < 0)
fp_err("could not claim interface 0");
dev->priv = g_malloc0(sizeof(struct aes3400_dev));
if (r == 0)
fpi_imgdev_open_complete(dev, 0);
return r;
}
static void dev_deinit(struct fp_img_dev *dev)
{
g_free(dev->priv);
libusb_release_interface(dev->udev, 0);
fpi_imgdev_close_complete(dev);
}
static const struct usb_id id_table[] = {
{ .vendor = 0x08ff, .product = 0x3400 },
{ .vendor = 0x08ff, .product = 0x3401 },
{ .vendor = 0x08ff, .product = 0x3402 },
{ .vendor = 0x08ff, .product = 0x3403 },
{ .vendor = 0x08ff, .product = 0x3404 },
{ .vendor = 0x08ff, .product = 0x3405 },
{ .vendor = 0x08ff, .product = 0x3406 },
{ .vendor = 0x08ff, .product = 0x3407 },
{ .vendor = 0x08ff, .product = 0x3408 },
{ .vendor = 0x08ff, .product = 0x3409 },
{ .vendor = 0x08ff, .product = 0x340a },
{ .vendor = 0x08ff, .product = 0x340b },
{ .vendor = 0x08ff, .product = 0x340c },
{ .vendor = 0x08ff, .product = 0x340d },
{ .vendor = 0x08ff, .product = 0x340e },
{ .vendor = 0x08ff, .product = 0x340f },
{ .vendor = 0x08ff, .product = 0x3410 },
{ 0, 0, 0, },
};
struct fp_img_driver aes3400_driver = {
.driver = {
.id = AES3400_ID,
.name = FP_COMPONENT,
.full_name = "AuthenTec AES3400",
.id_table = id_table,
.scan_type = FP_SCAN_TYPE_PRESS,
},
.flags = 0,
.img_height = IMG_HEIGHT * ENLARGE_FACTOR,
.img_width = IMG_WIDTH * ENLARGE_FACTOR,
/* temporarily lowered until image quality improves */
.bz3_threshold = 9,
.open = dev_init,
.close = dev_deinit,
.activate = dev_activate,
.deactivate = dev_deactivate,
};
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