POC for Elan driver generalisation. Please do not use elanfp but Igor driver for test.
Vendor: 0x04f3
Devices ID: 0x0903 ,0x0907, 0x0C01~0x0C33
| id | size | firmware | who | Note |
|---|---|---|---|---|
| 0x0903 | 96x96 | 0x0135 | Sebastien Bechet | Two FW : 0x0135 and 0x0142 |
| 0x0907 | 144x64 | 0x0141 | Igor Filatov | |
| 0x0c03 | 96x96 | ? | Konata Izumi | |
| 0x0c16 | 96x96 | 0x0138 | Hans de Goede | |
| 0x0c1a | 144x64 | 0x0142 | timo@TeEmZe | 0x40,0x31 before 0x40,0x3F |
| 0x0c26 | 144x64 | 0x0140 | Hans de Goede |
- Never see in windows drivers
- Can it be useful after hibernation on suspension?
- What are the cases where these commands are useful?
Q: Elan_FP_Rest_calibration.pdf informs us about the reset and the calibration. Should we reset before calibration?
| Type | Command name | EP1 (Out) Opcode Byte0 | EP1 (Out) Opcode Byte1 | EP1 (Out) Parameters Byte2~N | Reply (EP2,EP3 IN) Endpoint | Reply (EP2,EP3 IN) Reply Data Byte0~N | FW | Description |
|---|---|---|---|---|---|---|---|---|
| Get | Image Data | 0x00 | 0x09 | (None) | EP2 | Image Data | Get Sensor Image (ADC Value) | |
| Set | Stop and turn off the LED | 0x00 | 0x0B | (None) | (None) | (None) | Stop PreScan | |
| Get | Get Image Size | 0x00 | 0x0C | (None) | EP3 | Image Width, 0x00, Image Height, 0x00 (4 bytes) | ReadFP Sensor Size(Length, Width) | |
| Set | FP Sensor Reset (Sensor Reset) | 0x40 | 0x11 | (None) | (None) | (None) | > 0x0135 | FP Sensor Reset FP Sensr Reset command is needs a delay (5ms). It can execute next command. (not useful) |
| Get | FP Status | 0x40 | 0x13 | (None) | EP3 | FP Status | Execute FP Sensor instruction "Read Sensor Status value" (Execute FP Sensor instruction; 0x03) | |
| Set | Fuse_load | 0x40 | 0x14 | (None) | (None) | (None) | > 0x0135 | Execute FP Sensor instruction "Fuse load" (Execute FP Sensor instruction 0x04) (not useful) |
| Get | Get FwVer | 0x40 | 0x19 | (None) | EP3 | FWVer_H, FWVer_L (2 bytes) | FP Bridge FW Version | |
| Get | Get SensorCmd | 0x40 | 0x21 | Sensor command (1 byte) | EP3 | Read Sensor Command Value from FP sensor (1 byte) | Read Sensor Command Value from FP sensor | |
| Set | Set SensorCmd | 0x40 | 0x22 | Sensor command (1 byte) | (None) | (None) | Write Sensor Command to FP sensor | |
| Set (Get) | Run Calibration | 0x40 | 0x23 | (None) | EP3 | Status (1byte) 0x01 = Busy, 0x03 = Ok | > 0x0138 | Sensor Calibration (need retry until Reply OK (0x03) (Retry Interval 50ms). |
| Get | Get CalibrationMean | 0x40 | 0x24 | (None) | EP3 | Mean_H, Mean_L (2 bytes) | > 0x0138 | Calibration Image mean value |
| Set | Turn on the LED | 0x40 | 0x31 | (None) | (None) | (None) | Turn on the LED on 0xC1A | |
| Get | Pre-Scan | 0x40 | 0x3F | (None) | EP3 | Status (1 byte) 0x55 = Object | Execute FP Pre-Scan (Detect Object on FP Sensor) (It needs polling return value until getting FP reply value from Endpoint3) | |
| Get | Get Reg Data | 0x40 | 0x40~0x7F | (None) | EP3 | Reg Data (1 byte) | Get FP Sensor Register Command | |
| Set | Set Reg | 0x40 | 0x40~0xBF | Reg Data (1 byte) | (None) | (None) | Set FP Sensor Register Command |
Elan FP Sensor provide 14bit ADC resolution (Range 0~16383) and its format is 2 bytes/one pixel.
For 2^14 to 2^8 resolution down grade. Elan suggest using non-linear Normalize algorithm.
For example
Non-linear Normalize (Current Image [x][y] - Background [x][y])
![Non-linear Normalize (Current Image [x][y] - Background [x][y])](/sbechet/elanfp/blob/master/image003.jpg "Non-linear Normalize (Current Image [x][y] - Background [x][y])")
[ELAN] Correct Flow :
0x4023 --> wait 50 ms --> read,
check ->0x4023 --> wait 50 ms --> read,
check … ( until device reply 0x03 value)
# modprobe usbmon
# tshark -D
# tshark -i usbmon0 -w rip.pcap
It is then possible to launch windows in a virtual machine by attaching the usb to it.