After some usb sniffing I made own init table based on actual data going
through.
I wrote simple script that parses SniffUSB's logfile and grabs meaningful
information, then formats it according to I2C proto, mainly from
sn9c20x_write_i2c_data_ext() function.
here it is (assuming that start.log is the input file):
#!/bin/sh
cat start.log | grep -P -B5 'Value\s+\=\s+000010c0' | grep -n -P '00000000:
(b0|d0)' > dump
cat dump | grep -P ':\sb0.*' | awk '{print $1 " { 0x" $5 ", 0x" $6 $7 " }, "}'
> table_b0
cat dump | grep -P ':\sd0.*' | awk '{ printf("%s { 0x%s, 0x%s%s }, { 0x%x,
0x%s%s },\n", $1, $5, $6, $7, strtonum("0x" $5)+2, $8, $9) }' > table_d0
cat table_b0 > table_unsorted
cat table_d0 >> table_unsorted
cat table_unsorted | sort -n > table_sorted
cat table_sorted | sed -r 's/[0-9]+\:\s+//' > table
Of course it's not as pretty as it may be, but it works at least for me :)
Note: script is written in assumption that we need to parse only two types of
commands:
65: 00000000: b0 5d 3a 73 00 00 00 10
79: 00000000: b0 5d 06 90 1c 00 00 10
93: 00000000: b0 5d f0 00 00 00 00 10
107: 00000000: d0 5d 01 00 10 00 60 10
121: 00000000: d0 5d 03 03 ce 05 02 10
149: 00000000: b0 5d c8 00 03 00 00 10
163: 00000000: b0 5d 0a 00 01 00 00 10
177: 00000000: b0 5d 06 00 06 00 00 10
Status bytes b0 (1011 0000) and d0 (1101 0000) encoding
11b - 1 = 2 and 101b - 1 = 4 byte data lenghts. MSB and lower 4 bits are
ignored.
Other command appeared only with zero sized data blocks (90), and strange
sequence a2 5d 00 00 00 00 00 10 which I don't know how to handle. Write to
zero address? Or it is sensor detection as I heared somewhere?
One thing I need to ask: I2C exchange contains four byte writes. I do not
know, how to parse it correctly. Now it is translated into two consecutive
writes with address increment by 2.
Final otput of the script:
{ 0x0d, 0x0000 },
{ 0x0d, 0x0008 },
{ 0x0d, 0x0009 },
{ 0x0d, 0x0008 },
{ 0xf0, 0x0001 },
{ 0x3a, 0x7300 },
{ 0x06, 0x901c },
{ 0xf0, 0x0000 },
{ 0x01, 0x0010 }, { 0x3, 0x0060 },
{ 0x03, 0x03ce }, { 0x5, 0x0502 },
{ 0xc8, 0x0003 },
{ 0x0a, 0x0001 },
{ 0x06, 0x0006 },
{ 0x05, 0x00c0 },
{ 0x20, 0x0000 },
{ 0x20, 0x0000 },
{ 0x09, 0x0190 },
{ 0x0d, 0x8008 },
{ 0x2b, 0x0020 }, { 0x2d, 0x0020 },
{ 0x2d, 0x0020 }, { 0x2f, 0x0020 },
{ 0x0d, 0x0008 },
{ 0x01, 0x0010 }, { 0x3, 0x0060 },
{ 0x03, 0x03ce }, { 0x5, 0x0502 },
{ 0xc8, 0x0003 },
{ 0x0a, 0x0001 },
{ 0x06, 0x0006 },
{ 0x05, 0x00c0 },
{ 0x09, 0x01b0 },
{ 0x0d, 0x8008 },
{ 0x2b, 0x00a4 }, { 0x2d, 0x00bd },
{ 0x2d, 0x0034 }, { 0x2f, 0x00a4 },
{ 0x0d, 0x0008 },
{ 0x0d, 0x8008 },
{ 0x2b, 0x00d5 }, { 0x2d, 0x01c9 },
{ 0x2d, 0x00bf }, { 0x2f, 0x00d5 },
{ 0x0d, 0x0008 },
{ 0x09, 0x03f0 },
{ 0x0d, 0x8008 },
{ 0x2b, 0x00d8 }, { 0x2d, 0x01cb },
{ 0x2d, 0x00c0 }, { 0x2f, 0x00d8 },
{ 0x0d, 0x0008 },
{ 0x09, 0x0900 },
{ 0x0d, 0x8008 },
{ 0x2b, 0x00dc }, { 0x2d, 0x01cf },
{ 0x2d, 0x00c4 }, { 0x2f, 0x00dc },
{ 0x0d, 0x0008 },
{ 0x09, 0x0990 },
{ 0x0d, 0x8008 },
{ 0x2b, 0x00de }, { 0x2d, 0x01d1 },
{ 0x2d, 0x00c5 }, { 0x2f, 0x00de },
{ 0x0d, 0x0008 },
{ 0x0d, 0x8008 },
{ 0x2c, 0x01d0 }, { 0x2e, 0x00c6 },
{ 0x0d, 0x0008 },
{ 0x0d, 0x8008 },
{ 0x0d, 0x0008 },
{ 0x0d, 0x8008 },
{ 0x0d, 0x0008 },
{ 0x0d, 0x8008 },
{ 0x2c, 0x01cf },
{ 0x0d, 0x0008 },
{ 0x0d, 0x8008 },
{ 0x0d, 0x0008 }
I have no idea why commands appeared many times with different args. Anyone
may explain that? Some commands are similar to those existing in micron.c,
others not. Some commands have slightly different args (or maybe I incorrectly
parsed them).
My log files and registry entries are located here:
http://www.deeptown.org/korvin/MI1320.zip
P.S: I still can not achieve correct color processing. Patches from Brian
aren't working. Flipped image looks ok in color, but when we add (or remove)
flip commands -- it gets corrupted.
P.S2: When I start mplayer it displays garbage for around 3 secs, then shows
the picture. dmesg says
usb 1-1: New USB device found, idVendor=0458, idProduct=704c
usb 1-1: New USB device strings: Mfr=0, Product=1, SerialNumber=0
usb 1-1: Product: USB20 Camera
sn9c20x: Iso frame 0 of USB has error -18
sn9c20x: Iso frame 1 of USB has error -18
sn9c20x: Iso frame 2 of USB has error -18
sn9c20x: Iso frame 3 of USB has error -18
sn9c20x: Iso frame 4 of USB has error -18
sn9c20x: Iso frame 5 of USB has error -18
sn9c20x: Iso frame 6 of USB has error -18
sn9c20x: Iso frame 7 of USB has error -18
sn9c20x: Iso frame 8 of USB has error -18
sn9c20x: Iso frame 9 of USB has error -18
sn9c20x: Iso frame 0 of USB has error -18
sn9c20x: Iso frame 1 of USB has error -18
sn9c20x: Iso frame 2 of USB has error -18
sn9c20x: Iso frame 3 of USB has error -18
sn9c20x: Iso frame 4 of USB has error -18
sn9c20x: Iso frame 5 of USB has error -18
sn9c20x: [E] Empty buffer queue.
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