178 lines
6.1 KiB
C
178 lines
6.1 KiB
C
/*
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* Egis Technology Inc. (aka. LighTuning) 0570 driver for libfprint
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* Copyright (C) 2021 Maxim Kolesnikov <kolesnikov@svyazcom.ru>
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* Copyright (C) 2021 Saeed/Ali Rk <saeed.ali.rahimi@gmail.com>
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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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#ifndef __EGIS0570_H
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#define __EGIS0570_H 1
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/*
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* Device data
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*/
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#define EGIS0570_CONF 1
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#define EGIS0570_INTF 0
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/*
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* Device endpoints
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*/
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#define EGIS0570_EPOUT 0x04 /* ( 4 | FPI_USB_ENDPOINT_OUT ) */
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#define EGIS0570_EPIN 0x83 /* ( 3 | FPI_USB_ENDPOINT_IN ) */
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/*
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* Initialization packets (7 bytes each)
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*
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* First 4 bytes are equivalent to string "EGIS", which must be just a company identificator
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* Other 3 bytes are not recognized yet and may be not important, as they are always the same
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* Answers for each packet contain 7 bytes again
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* First 4 bytes are reversed "EGIS", which is "SIGE", which is company ID again
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* Other 3 bytes are not recognized yet
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* But there is a pattern.
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* Sending last packet makes sensor return image
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*/
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#define EGIS0570_TIMEOUT 10000
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#define EGIS0570_PKTSIZE 7
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#define EGIS0570_INIT_TOTAL (sizeof ((init_pkts)) / sizeof ((init_pkts[0])))
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static unsigned char init_pkts[][EGIS0570_PKTSIZE] =
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{
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x20, 0x3f },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x58, 0x3f },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x21, 0x09 },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x57, 0x09 },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x22, 0x03 },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x56, 0x03 },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x23, 0x01 },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x55, 0x01 },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x24, 0x01 },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x54, 0x01 },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x16, 0x3e },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x09, 0x0b },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x14, 0x03 },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x15, 0x00 },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x02, 0x0f },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x10, 0x00 },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x11, 0x38 },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x12, 0x00 },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x13, 0x71 },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x03, 0x80 },
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{ 0x45, 0x47, 0x49, 0x53, 0x00, 0x02, 0x80 },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x02, 0x2f },
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{ 0x45, 0x47, 0x49, 0x53, 0x06, 0x00, 0xfe } /* image returned after this packet */
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};
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/* There is another Packet !
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* That just Work the same !!
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* And the Size is different !!!
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*/
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/*
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#define EGIS0570_INIT_TOTAL2 (sizeof((init_pkts2)) / sizeof((init_pkts2[0])))
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static unsigned char init_pkts2[][EGIS0570_PKTSIZE] =
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{
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x10, 0x00},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x11, 0x38},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x12, 0x00},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x13, 0x71},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x20, 0x3f},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x58, 0x3f},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x21, 0x07},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x57, 0x07},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x22, 0x02},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x56, 0x02},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x23, 0x00},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x55, 0x00},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x24, 0x00},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x54, 0x00},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x25, 0x00},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x53, 0x00},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x15, 0x00},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x16, 0x3b},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x09, 0x0a},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x14, 0x00},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x02, 0x0f},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x03, 0x80},
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{0x45, 0x47, 0x49, 0x53, 0x00, 0x02, 0x80},
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{0x45, 0x47, 0x49, 0x53, 0x01, 0x02, 0x2f},
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{0x45, 0x47, 0x49, 0x53, 0x06, 0x00, 0xfe}
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};
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*/
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/*
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* After sending initial packets device returns image data (32512 bytes)
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* To ask device to send image data again, host needs to send four additional packets
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* Further work is to repeatedly send four repeat packets and read image data
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*/
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#define EGIS0570_INPSIZE 32512
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/* 5 image with captured in different time of size 114 * 57 = 6498
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* 5 * 6498 = 32490 plus 22 extra unrecognized char size data
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* Two continuous image in this 5 images may have time delay of less than 20ms
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*/
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#define EGIS0570_IMGSIZE 6498
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#define EGIS0570_IMGWIDTH 114
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#define EGIS0570_IMGHEIGHT 57
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/* size of middle area that is used from each frame */
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#define EGIS0570_RFMGHEIGHT 17
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/* rows to ignore from top and bottom of the image*/
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#define EGIS0570_RFMDIS (EGIS0570_IMGHEIGHT - EGIS0570_RFMGHEIGHT) / 2
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#define EGIS0570_IMGCOUNT 5
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/*
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* Image repeat request
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* First 4 bytes are the same as in initialization packets
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* Have no idea what the other 3 bytes mean
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*/
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#define EGIS0570_REPEAT_TOTAL (sizeof ((repeat_pkts)) / sizeof ((repeat_pkts[0])))
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static unsigned char repeat_pkts[][EGIS0570_PKTSIZE] =
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{
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x02, 0x0f },
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{ 0x45, 0x47, 0x49, 0x53, 0x00, 0x02, 0x0f },
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{ 0x45, 0x47, 0x49, 0x53, 0x01, 0x02, 0x2f },
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{ 0x45, 0x47, 0x49, 0x53, 0x06, 0x00, 0xfe } /* image returned after this packet */
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};
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/*
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* This sensor is small so I decided to reduce bz3_threshold from
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* 40 to 10 to have more success to fail ratio
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* Bozorth3 Algorithm seems not fine at the end
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* foreget about security :))
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*/
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#define EGIS0570_BZ3_THRESHOLD 25 /* and even less What a joke */
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#define EGIS0570_MIN_MEAN 20
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#define EGIS0570_MARGIN 3
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#define EGIS0570_RESIZE 2
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#endif
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