1 Microdia USB 2.0 Webcam Drivers
2 ===============================
4 This Driver is essentially a fork of the Syntek Webcam drivers for Linux by Nicolas,
5 specifically to accomodate Microdia chipset based Webcams.
8 The Microdia USB 2.0 Webcam Drivers for Microdia chipset based Webcams is currently under development.
9 Using this driver can result in damage. Use this driver only if you know what you are doing.
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24 4.1 Option "fps" module
25 4.2 Options "hflip" and "vflip" module
26 4.3 Options "contrast", "colour", "whiteness" and "brightness"
35 7.2. USB logs from Windows
36 7.3. USB logs from Linux
37 7.4. Enable module traces
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45 Kernel 2.6.18 or higher
46 Doxygen in order to compile the documentation
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54 To build documentation :
60 To build the kernel module :
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77 4.1 Option "fps" module
79 The microdia module waits the option "fps" (10, 15, 20, 25, 30) :
80 $ modprobe microdia fps=30
82 By default, the fps is set to '25'.
84 4.2 Options "hflip" and "vflip" module
86 The microdia module waits the options "hflip" and "vflip" (values are 0 or 1):
87 $ modprobe microdia hflip=0 vflip=1
89 By default, the hflip and vflip are set to '1'.
91 4.3 Options "contrast", "colour", "brightness" and "whiteness"
93 The microdia module waits the options "contrast", "colour", "brightness" and "whiteness" :
94 $ modprobe microdia contrast=0x7F00 colour=0x7F00
96 By default, the value of these options is set to '0x7F00'.
100 In the directory : /sys/class/video4linux/videoX (by sample video0), you
101 can read and write some parameters :
105 To display informations about driver :
108 It is a register editor implemented. You can display and change the camera registers.
109 To use this register editor see follow examples below:
111 0) open a shell and move to your video device (normaly video0)
112 $ cd /sys/class/video4linux/video0
114 1) Set and display register adress 0x11b8
115 $ echo 11b8 > adr // set the adress value to 0x11b8
116 $ cat adr // command to display the adress value
119 2) display the value from register 0x11b8
120 $ cat reg // command to display the register value
121 $ 0x11b8 = 0x3a // output
123 3) Set value from register 0x11b8 to 0x10
129 4) I2C Interface: set read/write count,
130 (how many bytes we want to read/write = 1/2)
131 (we are using the adr value for this)
133 $ echo 1 > adr // we want only to read / write one byte
135 5) I2C Interface: set i2c slave to 0x30
136 $ echo 30 > i2cslave // set the I2c slave adress to 0x30
137 $ cat i2cslave // command to display the I2cadress value
140 6) I2C Interface: set i2c adress to 0x12
141 $ echo 12 > i2cadr // set the I2cadress value to 0x12
142 $ cat i2cadr // command to display the I2cadress value
145 7) I2C Interface: Display I2c-register 0x12 (0x22 isn't valid, count is (1))
146 $ cat i2creg // command to display the I2c register value
147 $ I2C-register 0x12 = 0x40 0x22 (1)
149 8) I2C Interface: Set I2c-register
150 (you have to enter the values for 2 registers)
152 $ echo 4100 > i2creg // set the I2c register value to 0x41
153 $ cat i2creg // command to display the I2c register value
154 $ I2C-register 0x12 = 0x41 0x22 (1)
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163 The kernel module is currently under active development.
165 The driver supports following webcam models :
175 To request support, please contact us on Microdia Mailing List:
177 http://groups.google.com/group/microdia
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183 To build and load the driver, follow the steps :
185 $ make -f Makefile clean
190 To test the driver with the V4L v1 API (map methode) :
192 $ camorama -D --width=640 --height=480
194 To test the driver with the V4L v1 API (read methode) :
196 $ camorama -D -R --width=640 --height=480
198 To test the driver with the V4L v2 :
202 To use mplayer / mencoder :
204 $ mplayer tv:// -tv driver=v4l:width=640:height=480
205 $ mplayer tv:// -tv driver=v4l2:width=320:height=240:fps=25:outfmt=rgb24:device=/dev/video0
206 $ mplayer tv:// -tv driver=v4l2:width=320:height=240:fps=25:outfmt=yuy2:device=/dev/video0
207 $ mplayer tv:// -tv driver=v4l2:width=320:height=240:fps=25:outfmt=uyvy:device=/dev/video0
209 $ mencoder tv:// -tv driver=v4l:width=640:height=480:outfmt=rgb24:device=/dev/video0 -nosound -ovc lavc -o out.avi
210 $ mencoder tv:// -tv driver=v4l2:width=320:height=240:fps=25:outfmt=rgb24:device=/dev/video0 -nosound -ovc lavc -o out.avi
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218 [root@Dahlia driver]$ lsusb
219 Bus 005 Device 003: ID 0c45:624f Microdia <== Our Webcam
220 Bus 005 Device 001: ID 0000:0000
221 Bus 004 Device 001: ID 0000:0000
222 Bus 003 Device 002: ID 08ff:2580 AuthenTec, Inc.
223 Bus 003 Device 001: ID 0000:0000
224 Bus 002 Device 001: ID 0000:0000
225 Bus 001 Device 004: ID 0a5c:2101 Broadcom Corp.
226 Bus 001 Device 001: ID 0000:0000
228 [root@Dahlia driver]$ lsusb -d 0c45:624f -vvv > lsusb.txt
230 7.2. USB logs from Windows
231 There are 3 useful USB logs :
232 - Log 1 : when you plug your webcam
233 - Log 2 : when you run VideoView.exe (with the default settings)
234 - Log 3 : when you run VideoView.exe, then change the resolution to 1280x1024
236 7.3. USB logs from Linux
237 Use the kernel module usbmon (enable option debugfs in the kernel)
239 7.4. Enable module traces
240 You can enable : CONFIG_MICRODIA_DEBUG and CONFIG_MICRODIA_DEBUG_STREAM
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246 Microdia USB 2.0 Webcam Driver is distributed under the GPL licence (version 2 or later).