hi,ChengHao!I take a look at the I2C address table in first page of
EVMDM355_schematics_Revd2.pdf, The I2C address table is as follows: 0x25
00100011B MSP430 RTC,IR CTL, IO CTL, POWER MONITOR 0x5D 01011101B TVP5146
VIDEO DECODER - 101110(I2CA) 0x1B 00011011B AIC33 AUDIO CODEC -
00110(MFP1)(MFP0) I understood your meaning, in fact the MT9T001 Slave
Address is 0xBA in write mode, Slave Address is 0XBB in read mode, in the
MT9T001.h document,The address consists of seven bits , Eighth bit position
useless the definition to be as follows: #define MT9T001_I2C_ADDR (0xBA >>
1), therefore I thought is not the question which you said! Thanks your
reply! winkyxiao!
Subject: RE: HELP ME! DM355 EVM MT9T001 question!Date: Thu, 28 Aug 2008
11:38:35 +0800From: [EMAIL PROTECTED]: [EMAIL PROTECTED]
Hi winky,
I meet this issue days ago,
Maybe caused by the different description of I2C address between dm355 and
other chipset,
You can take a look at the I2C address table in fist page of
EVMDM355_Schematics_RevD2.pdf, TI add ‘0’ at the 8 bit and give the address,
But some company adds ‘0’ at the read/write bit and give an address,
For example, 0011010 , in TI platform should use 0x1a; but some chipset spec
give address of 0x34.
BR
Chenghao
From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of xiaowinkySent:
Thursday, August 28, 2008 10:01 AMTo: [EMAIL PROTECTED]: FW: HELP ME! DM355 EVM
MT9T001 question!
I am trying to get the CCDC driver running and talking to a M9T001 image
sensor hooked up on the DVEVM DM355.I have a custom pcb that adapts the sensor
to the J30，J31 interface using thesame level translators that are used for the
tv decoder chip on the board. Ihave the CAPTURE_EN pulled high to disable the
on-board tv chip.I compiled the CCDC driver into the kernel as a static
module.I add the following to the bootargs:bootargs=console=ttyS0,115200n8
noinitrd ip=dhcp root=/dev/nfs rw
nfsroot=192.168.0.81:/home/xiao/workdir/filesys mem=116M
v4l2_video_capture=:device=MT9T001 When i boot the image I get a long list of
failed I2C actions (shown below)Does anyone know what could cause this
problem?Maybe it is an I2C address problem, or some other communication
problem,although I see with the scope that there is definitely I2C data coming
intothe M9T001.Any help would be appreciated.Thanks,-winkyxiao i2c /dev entries
driverLinux video capture interface: v1.00Registering platform device 'vpfe.1'.
Parent at platformDaVinci I2C WARNING: i2c: AL detectedDaVinci I2C WARNING:
i2c: cmd complete failed: complete = 0x0, icstr =
0x410DaVinci I2C WARNING: i2c: AL detected ERROR: i2c readback failed, val =
32, readval = 18, reg = 96 ERROR: i2c readback failed, val = 32, readval = 16,
reg = 97 ERROR: i2c readback failed, val = 32, readval = 26, reg = 99 ERROR:
i2c readback failed, val = 32, readval = 25, reg = 100vpfe vpfe.1: DaVinci v4l2
capture driver V1.0 loaded -------------- next part --------------
MSN上小游戏，工作休闲两不误！ 马上就开始玩！
MSN上小游戏，工作休闲两不误！ 马上就开始玩！
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