I2cdetect uu Improve this answer. Drop your overlays and check with i2cdetect and I suspect it will still be slow. i2cdetect [-y] [-a] [-q|-r] i2cbus [first last] i2cdetect-F i2cbus i2cdetect-V i2cdetect-l. i2cbus indicates the number or name of. 0. Every once in a great while, i2cdetect shows "UU", /dev/rtc* Arduino library for scanning I2C bus for devices. on my setup, when i run sudo i2cdetect -y 1 at address 68 it shows "UU" which I assume means unavailable. i2c I2C adapter. There is nothing useful you can to with a i2cdetect shows all blanks or UU. This is the same for port 1 but beyond that lots of devices display at random places (eg port 4 shows a nearly full table). i2cdetect：i2cdetect命令-a：匯流排上所有裝置; 0：標號為 Note that -r is being used rather -q, so i2cdetect uses SMBus receive byte rather than the SMBus quick command for device detection. To view this page i2cdetect - detect I2C chips. com/roelvandepaarWith thanks & praise to God, and w Hi, today I followed some tutorials to set up a rtc. It has three address select pins, A0-A2. 1) and unable to detect anything on i2c. Reboot with ADC plugged in and i2cdetect - detect I2C chips. 1d is the address of a device connected to i2c bus "1" (from the -y 1 parameter). i2cbus indicates the number or name of the I2C bus to i2cdetect is a program to scan an I2C bus for connected devices. Hot Network Questions Front Ok with 0x27 i2cdetect on bus 1. 3v and GND (1, 9) is connected to a 5v fan so it There are two problems with this. UU indicates that the Powered by Rockchip RK3588S new-gen 8-core 64-bit processor, the core board can be configured with up to 32GB RAM. This example just implements some of basic features of I2C Tools Also when I fix your bug why does it remove my RTC on 68 - the UU in the I2CDetect. I need to be able to write and read I2C registers of the ISP. I can set the date using hwclock with -r, '-w', and -s successfully. 5V, so it should be fine with 3. 0. An address number man i2cdetect (8): i2cdetect is a userspace program to scan an I2C bus for devices. . 1. First: what's the UU I get on address 0x3b on i2cdetect?, it also appears with the sensor disconnected, on both pi's! Second: peeking with a ‘UU’：表示该地址当前由内核驱动程序使用。 13. Probing was skipped, because this address is currently in use by a driver. And also the Hi! I’ve just connected mipi/sci cameras to Jetson nano B01 (R 32, revision 6. I guess it what you intended, so it's ok. I've tried on two ESP32S2 boards (esp32-s2-saola and esp32-s2-kaluga) with three I2C slave devices (DHT12, BMM150 and Hi, im trying to send my balenafin to sleep using the integrated rtc ds1307, i followed this post after enabling the rtc i can successfully see it on the x68 address on bus 3 (apologies if this is a double-post my first submission does not seem to have gone through) Hi, I’ve been having a hell of a time getting the BeagleBone Green to see Grove Running i2cdetect -y 1 should show the symbol UU at address 48, indicating the driver has connected. 4 dunfell) and i2c Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about your product, Hello guys. I googled a lot to solve It shows an operating voltage range of 2. 120114] raspberrypi-firmware soc:firmware: Firmware hash is 74a4b109e7f5be465332a1f102649d34f8498d05 [ 0. Usually it means the I2C signal lines SCLK, SDA are bad, noisy and/or distorted for some of the following reasons: (1) Wires too When I use sudo i2cdetect -y 11 or sudo i2cdetect -y 10 with the OV5647 driver loaded, the camera shows up as "UU" as expected pi@raspberrypi:~$ sudo i2cdetect -y 10 The address is set by soldering pads on the back of the backpack. 3 voltage for DS1624 , may be need change to 5 volts It has three address select pins, A0-A2. – Dougie. 3. If that doesn't work, look at the command I am trying to read digital input using the spi interface on the raspberry pi. But it shows i2cdetect [-y] [-a] [-q|-r] i2cbus [first last] i2cdetect-F i2cbus i2cdetect-V i2cdetect-l DESCRIPTION i2cdetect is a userspace program to scan an I2C bus for devices. (from i2cdetect's manual page). The output has some UU UU values as shown below, which I do not get what it However, when I use `i2cdetect`, it shows `0x68`(which is my RTC slave address) is having the status `"UU"`, which means "Probing was skipped, because this address is currently in use by Most of the time, i2cdetect shows "68" and /dev/rtc* returns with nothing found, hwclock says it can't find the RTC. You'll also see some messages in a dmesg command for the I2C device. # i2cdetect -y -r 0. Is this the expected result? The Real Time Clock battery looks to be in 1. After power up the board when I probe the i2c devices , I am not able to see any of the i2c slave devices on bus. root@xilinx-zcu216-20222:~# i2cdetect -l. i2cdetect 使用示例¶. (Numbers are pins) 3. Now let's set the time. i2cdetect [-y] [-a] [-q|-r] i2cbus [first last] i2cdetect-F i2cbus i2cdetect-V i2cdetect-h i2cdetect-l. 4, ALS sensor is connected to i2c-bus 0 when we try to scan the i2c bus-0 to check ALS HW is detected or not Hi Everyone, I am using the linux distribution came from mangoH Red. Connect them all 0. i connected nothing , why there's a "UU" print there? It simply means that there's a driver installed that Entering "i2cdetect -y 1" yields UU at address 30b Mon Dec 01, 2014 8:58 pm As the title says, when I run "i2cdetect -y 1" on my RPi B+, which is connected to an ADS1015 ADC, I Fixed by connecting the quadcam hat to CAM0 instead of CAM1 on RPI4, it might have been caused because the CAM1 I2C is broken. If the device exists it should pull SDA low to signal its presence. i2cdetect 扫描I2C总线上的设备 i2ctransfer -y -f 1 w2@0x62 0x00 0x00 r32 1. However, the lsmod command doesn't show any loaded modules that i2cdetect can also be used to query the functionalities of an I2C bus (see option -F. dtoverlay=ads1115 <options as required> # Read the file When I run sudo i2cdetect -y 0 I see no devices at all. Each cell will contain one of the following symbols: "--" when the address was probed but no chip answered Warning: This page is designed to be used with a 'release' URL parameter. ) WARNING¶ This program can confuse your I2C bus, cause data loss and worse! INTERPRETING THE i2cdetect [-y] [-a] [-q|-r] i2cbus [first last] i2cdetect-F i2cbus i2cdetect-V i2cdetect-l. txt, which also requires a reboot. I have activated the bus in the config. i2c I2C adapter i2c-1 i2c 30a30000. It outputs a table with the list of detected devices on the specified bus. if I reboot, I get from hwclock -r. Is that normal for X728 v2. Working with STM32MP15 ecosystem release v2. Output of the working Stack Overflow for Teams Where developers & technologists share private knowledge with coworkers; Advertising & Talent Reach devs & technologists worldwide about Re: I2C shows UU instead of the address Thu Oct 30, 2014 11:21 pm UU means that address is reserved by the kernel for a driver, I think one of them (0x3B) is for the driver # i2cdetect -y 0. 4 I2C Bus Devices: When run: sudo i2cdetect -y 1 the result for 6f is uu. Rating: (0) Hello, I am currently having a problem with the I2C-bus of the SIMATIC IOT 2020. i2cdetect扫描I2C总线上的设备i2ctransfer -y -f 1 w2@0x62 0x00 0x00 r321. 5? Permalink | Reply | Harry. Probing was skipped, because this address is The UU indication is from the kernel meaning it didn't touch the device. Can someone explain why I am getting this UU? I am following this tutorial. So it seems there is a problem with I2C+FlexSPI boot If I am wrong, tell me which After I got my 64MP cams running on the RPI 5 I am facing issues with the I2C bus. If an I 2 C device is detectable with i2cdetect, it means hardware is fine and if not detectable means i2cdetect is a userspace program to scan an I2C bus for devices. Probing was skipped, because this address is i2cdetect -l suggests the cadence driver has been loaded for i2c0 and i2c1. 15-2. i2cdetect主要用于查看当前总线上的设备，我们这里查看IIC 1接口上的设备，重点关注MPU6050、显示屏触摸芯 From the post you linked I can see that are used both i2c-0 and i2c-1, but the i2c channel used in the UEXT connectors are i2c-1 and i2c-2. To check which of the three buses are enabled we can use i2cdetect: root@arm:~# i2cdetect -l i2c-0 i2c OMAP I2C adapter I2C adapter i2c-2 i2c OMAP I2C adapter I2C adapter i2cdetect [-q|-r] i2cbus [first last] i2cdetect-F i2cbus i2cdetect-V i2cdetect-l. "UU" is defined as device busy. The documentation says i2cdetect will show UU Now that we have the module wired up and verified that you can see the module with i2cdetect, we can set up the module. Contribute to mcauser/i2cdetect development by creating an account on GitHub. Probing was skipped, because this address is why does the i2cdetect always gives UU on my RTC in embedded Linux. So "UU" means that i2cdetect skipped probing because device at the address you specified is already used by driver. patreon. Probing was skipped, because this address is But when I do the i2cdetect using the i2c_tools example in the esp-idf folder, I get into issues. UB960 is connected to 0x3d and it is working when sensor setting is written. When I try to detect it using i2cdetect, I don’t see my sensor connected. Related questions. The optional parameters first and last restrict the scanning range to the specified The i2cdetect program checks for the existence of a device by sending its address then letting SDA float high. DESCRIPTION. hwclock: The Hardware Clock registers Use i2cdetect to display the different I2C busses: $ i2cdetect -l crw----- 1 root root 89, 1 Dec 31 2016 /dev/i2c-1 The "UU" indicates devices owned by the kernel, being managed by a # i2cdetect -y 0. ) WARNING This program can confuse your I2C bus, cause data loss and worse! INTERPRETING THE 文章浏览阅读8k次，点赞5次，收藏16次。2，不是所有的i2c设备都能探测到，有些16位寄存器i2c设备无法探测到，可以尝试使用i2ctransfer去尝试读写来判断当前地址是否存在 In terminal type sudo i2cdetect -y 1 (enter) and you should see: 68 is now UU. 183751] Kprobes globally optimized However, when I use `i2cdetect`, it shows `0x68`(which is my RTC slave address) is having the status `"UU"`, which means "Probing was skipped, because this address is currently in use by 答：示例如下: root:~# i2cdetect -y 0 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: -- -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- - i2cdetect -y 1 shows UU in the 68 slot. 4 Different I2C addresses on Arduino? 6 i2cdetect won't show device, but it's there. the I2C bus to I think you're misunderstanding the meaning of i2cdetect's output. Check your wiring to make sure SDA hasn't been linux开发者经常会与i2c设备打交道，开发调试i2c设备的时进行遇到各种各种问题，本文将详细介绍I2C-tools的使用方法，包括i2cdetect查询I2C bus上的设备，i2cdump 用于查看对应bus上的所有寄存器，i2cget用于读取对 i2cdetect can also be used to query the functionalities of an I2C bus (see option -F. Don't forget to set up I2C in the previous step! You signed in with another tab or window. You signed out in another tab or window. By default i2-tools/py-smbus module does not provide an See man i2cdetect. WGB I2C Tools is a simple but very useful tool for developing I2C related applications, which is also famous in Linux platform. I tried troubleshooting could you please setup a terminal for running $ dmesg --follow, and please execute i2cdetect again to check if any failure messages reported. However, when I use `i2cdetect`, it shows `0x68 Arduino i2c Detection Library. It outputs a table with the list of 文章浏览阅读1. Enable I2C-tools in LTIB into How do I know which I2C is an actual I2C device and what are these addresses? My system/ my computer is an Nvidia Jetson AGX Xavier and I have no I2C devices plugged You signed in with another tab or window. It seems that i2cdetect can't see the device . Is there any way to solve this? It should be readable, UU i2cdetect just sends a "read" request (that is, just the 7-bit address and the R/W bit) to each address in turn, and checks which result in NACK (no device) or ACK (something present) Thanks for that, i2cdetect. 7V - 5. Connect them all to ground. To my mind, address 0x7C reported in i2cdetect tool doesn't relates to PN7150 but rather to another device connected on this BUS. However, if I connect the module once the os is running, I do not see a linux开发者经常会与i2c设备打交道，开发调试i2c设备的时进行遇到各种各种问题，本文将详细介绍I2C-tools的使用方法，包括i2cdetect查询I2C bus上的设备，i2cdump 用于 i2cdetect -y 1 will show "UU" for an RTC that's been claimed by a kernel module. This strongly suggests that there is a chip at this address. The output is a table listing the detected devices on the specified bus. I2C Toolsには i2cget i2cset i2cdetect i2ctransfer i2cdump というコマンドが同梱されているが、この内 i2cget i2cset i2cdetect についてコマンドの簡単な使い方を記しておく i2cdetect [-y] [-a] [-q|-r] i2cbus [first last] i2cdetect-F i2cbus i2cdetect-V i2cdetect-l The address was probed but no chip answered. The i2c-tools package contains a heterogeneous set of I2C tools for Linux: a bus probing tool, a chip dumper, register-level SMBus access helpers, EEPROM decoding scripts, EEPROM i2cdetect [-y] [-a] [-q|-r] i2cbus [first last] i2cdetect-F i2cbus i2cdetect-V i2cdetect-l The address was probed but no chip answered. I don't mind becuase I get progress When running i2cdetect it shows weird output. ShaneCCC February 5, 2024, The UU in the i2cdetect output shows that the RTC has been claimed by the kernel and as such is unavailable to do anything else with. 0 (concrete STM32MP157F-EV1 and openstlinux 5. What do you have connected to the (I2C) GPIO ports? i2cdetect is a pretty dumb program, running it with -y 1 Though it is very late to answer this, recently I had similar issue with my 9$ chip's i2c module axp209 (power management IC). However, I can't access serdes or sensor registers with i2cdetect, i2cget, and i2cset. This strongly i2cdetect can also be used to query the functionalities of an I2C bus (see option -F. Contribute to tobiasfaust/i2cdetect development by creating an account on GitHub. In Verification topic 3, section 2. Here is the output of 'i2cdetect 0' If I execute the command i2cdetect -y 3 I get the next info: If I try to read the registers of the 0x21 device: Why I get the UU in the address of my I2C devices? Labels (1) root@imx8m-som:~# i2cdetect -list i2c-3 i2c 30a50000. I had configured the hardware by device addressing for 0x54. This is not normal. e. Demonstration of the output: Searching for I2C devices on the bus Device found: 0x38 Device found: 0xB0 Device found: Hi, I'm trying to send and receive data over an I2C port. the list of detected devices on the specified bus. I did the i2cdetect command with my rtc module connected and i've got an UU on bx10 and 50 on 0x50. i use 3. I'd like to communicate read from my RTC in C code rather than the "hwclock" shell command. Pay attention that PN7150 will not Hello, I’ve connected a Grove temperature sensor to my BBB. I am using the Example Image V2. You switched accounts on another tab So I disconnected the TDA to restore the last working configuration to come up with i2cdetect telling me that there is suddenly a device under every possible address: @Behzad Sedighzadeh, Ah let me see. Others had also mentioned Use i2cdetect to display the different I2C busses: $ i2cdetect -l crw----- 1 root root 89, 1 Dec 31 2016 /dev/i2c-1 The "UU" indicates devices owned by the kernel, being managed by a But when I gave the i2cdetect -r -y 10 command it shows 8 different addresses for single hardware. txt as dtoverlay mcp23017,addr=0x21. I triple-checked the wiring. i2cdetect Command Outputs >i2cset -y 0 0x66 0x10 0x55 I2C0 writes the data value 0x55 to the (note base=xx is a beta provided by PhilE, but the problem was there before this). There is a tutorial on how to change the address to install the helper software and then sudo i2cdetect -y 1 at the command line, you should see ID #68 show up - that's the address of the DS1307, i2cdetect will skip over 0x68 and display UU instead, this means Hello, I recently connected an i2c device, a TSC2007 IC from TI, to my RasPi, but it is not appearing in i2cdetect. Follow edited Jun 30, 2022 at 15:24. The 'UU' is supposedly a conflict but the commands 'sudo With i2cdetect command: with FlexSPI boot, it is always 'UU', with SD boot, you can have some values, meaning these devices are available. not sure where to call i2c_register_board_info. 1 i2cdetect-l查看当前系统的I2C总线 总线挂载了I2C设备,可通过i2cdetect扫描每一个总线的所有 The i2cdetect tool allows you to scan the I2C bus and detect devices connected to it. It provides a grid view with addresses and corresponding symbols indicating the presence of Now, when I scan using 'i2cdetect -y 1' it shows ports 57 and a UU in port 68 where the DS3231 is supposed to be. 1 i2cdetect -l查看当前系统的I2C总线总线挂载了I2C设备,可通过i2cdetect扫描每一个总线的所有设 I'd like to communicate read from my RTC in C code rather than the `"hwclock"` shell command. I googled a lot to solve t With ADC board unplugged, halt/reboot i2cdetect 1 shows blank at 0x48 Hot plug ADC board and i2cdetd 1 shows 48 at 0x48 and app works. 6w次，点赞14次，收藏95次。1. 2 i2c probe not being called. i2cdetect -y 1 i2cdetect -y 1. I have UU instead of 68 for i2cdetect. It is getting worse. why does the i2cdetect always gives UU on my RTC in And then to run a scan, use i2cdetect with the following command line parameters: Download File Copy Code. 2 and the i2c-dev driver is loaded. What Hi, today I followed some tutorials to set up a rtc. UU means a driver has claimed that address, check /boot/config. ) WARNING This program can confuse your I2C bus, cause data loss and worse! INTERPRETING THE initialize the library with your selected I2C pins i2cdetect(uint8_t sda, uint8_t scl); i2cdetect* t = NULL; setup() { t = new i2cdetect(4,5); } make a scan, this step is necessary as first step Even without active scripts, if I reboot with the rtc module connected, i2cdetect will show a UU in spot 68. So my question is: What is using I2C address 0x40 and 0x41 on i2c bus 0 on the Can you do a "sudo i2cdetect -y 1" again please and post it here. i2cbus indicates the number or i2cdetect can also be used to query the functionalities of an I2C bus (see option -F. DESCRIPTION i2cdetect is a userspace program to scan an I2C bus for devices. ipatch. Second, the device at 0x3b is highly abnormal. An address number I have a GMSL camera connected and working through the bottom port of the AGX Xavier. i2cdetect shows all blanks even if I specify the address in config. i2cdetect is a userspace program to scan an I2C bus for devices. ) WARNING¶ This program can confuse your I2C bus, cause data loss and worse! INTERPRETING THE We have a custom board with jetson nano flashed with JP4. This page is using the default release mx8mm-yocto-kirkstone-5. 4 >i2cdetect -r 0 List the I 2 C slave devices connected to the HPS. txt and I have connected (after removing the Quad-Hat) a This software was inspired (as its name shows) by i2cdetect . answered according to the man page for i2cdetect, “UU” indicates that a driver is usig this address. no “UU” in i2cdetect) etc. Then look for the wiring 文章浏览阅读1. Maybe you placed it somewhere where those pads got shorted. pi@raspberrypi:~ $ date Sun Feb 10 13:50:51 EST 2019. i2c-0 is used to connect the Arduino library for scanning I2C bus for devices. "UU". 0 Change I2C How do I know which I2C is an actual I2C device and what are these addresses? My system/ my computer is an Nvidia Jetson AGX Xavier and I have no I2C devices plugged i2cdetect [-y] [-a] [-q|-r] i2cbus [first last] i2cdetect-F i2cbus i2cdetect-V i2cdetect-l. In my first test I only connected 5v, GND and I2C to the PI to power it up and read from i2c. Reload to refresh your session. Score 0. despite there being 2 devices on there apparently. It outputs a table with. I followed procedures to configure the raspberry From the i2cdetect man page: INTERPRETING THE OUTPUT Each cell in the output table will contain one of the following symbols: · "--". system Closed March 7, 2023, \$\begingroup\$ @Justme Yes, with the -r switch, adress in read mode is set and then single byte is clocked out from the slave followed by the NACK from master. Presence of i2cdetect can also be used to query the functionalities of an I2C bus (see option -F. If I remove the driver, I won't see anything with i2cdetect on 0x20 (not UU and not 0x20 , just nothing). If this doesn’t work, issuing an error, you may add a “-r” option to use the SMBus commands, which should work. (UU refers to another, "pre i2cdetect is a powerful and simple tool for figuring out I 2 C devices. Capable of 8K video encoding and decoding, it provides Hello, I have an issue getting i2c to work correctly. uu just means that the RTC clock driver is loaded Pete. That should show up in i2cdetect is a userspace program to scan an I2C bus for devices. The optional parameters first and last sudo i2cdetect -y 0 Share. Thanks. Figure 13. i2c I2C adapter i2c-2 i2c 30a40000. 4,032 8 8 gold badges 64 64 silver badges 103 103 bronze badges. On modern Raspberry Pi OS releases, you do not need to run the command with (UU refers to another, "pre-installed driver" driven device). Can you please help, following are some details I2C Connection Details: SIG → P9_19 'UU'：表示該地址當前由核心驅動程式使用 '**'：** 表示以16進製表示的裝置地址編號，如“68” 例子： i2cdetect -a 0. However I I have added a DS1307 to my PI, built from individual components, and followed the Adafruit documentation to setup the software. First, the devices that are attached don't appear to be showing up. 13 months ago. 4. i2c I2C adapter i2c-0 i2c 30a20000. 21camposs Posts: 11 I'm confused, you say that "Usage: i2cdetect [-y] [-a] [-q|-r] I2CBUS [FIRST LAST]\n"" i2cdetect -F I2CBUS\n"" i2cdetect -l\n"" I2CBUS is an integer or an I2C bus name\n"" If provided, FIRST and LAST limit the probing 0x50 would not show up in any dts/device tree - since when it does show up, it is not used by any driver (i. Use your current time and date! man i2cdetect for more info. 3V. I am unable to reproduce this issue. x-v1. Outputs a table similar to the linux program of the same name. To see more about I²C, please follow this link Wikipedia:I²C. I have bought the ADS1115 and try to connect it to my Raspberry Pi model B+. 6. 5w次，点赞16次，收藏69次。本文介绍了在嵌入式Linux系统中如何使用i2c-tools套件进行I2C通信，包括i2cdetect来扫描总线设备，i2cget用于读取寄存器值，i2cset用于写入寄 Posts: 7. Probing was skipped, because this address is I know the i2c address of KXTJ3-1057 is 0x0e, but when I run i2cdetect -r 4, the address is displayed as UU. ) WARNING This program can confuse your I2C bus, cause data loss and worse! INTERPRETING THE UU what is this mean by short comments if it possible. However, when I use i2cdetect, it shows 0x68 (which is my RTC slave address) is now if I change the address to 0x21 A0=1, A1=0, A2=0 and reboot. It outputs a table with the list why does the i2cdetect always gives UU on my RTC in embedded Linux. Here how I’am going to do it:. Failing to read I2C data on LPG10 flow sensor using Python. You switched accounts on another tab i2cdetect is a program to scan an I2C bus for connected devices. ) WARNING This program can confuse your I2C bus, cause data loss and worse! INTERPRETING THE i2cdetect is a userspace program to scan an I2C bus for devices. The BeagleBone doesn't support the After echoing the RTC chip and its address to sysfs, it's expected that the address is occupied as shown by i2cdetect ("UU" symbol in the address), and a new rtc device is Raspberry Pi: i2cdetect shows all blanks or UUHelpful? Please support me on Patreon: https://www. But the block diagram shows it has In addition, i2cdetect -r 9 shows UU for the particular device that I'm trying to read from which indicates that there is a driver already occupying the device. Output of the working command will be an According to one person, "UU" on the i2cdetect, could mean "Probing was skipped, because this address is currently in use by a driver". Hello. Trev. It outputs a table with the list This solved the problem of the device not showing up in i2cdetect and the hardware is working as before. i2cdetect shows addresses starting from 8. Can anyone point me in i2cdetect [-y] [-a] [-q|-r] i2cbus [first last] i2cdetect-F i2cbus i2cdetect-V i2cdetect-l The address was probed but no chip answered. • "UU". You may try -r or -q. When I type i2cdetect -y 3x the first time, it correctly looks for all the available devices on bus I like to know if there is any documentation on What 'i2cdetect' needs or looks for on the GPIO to detect a device? What makes 'i2cdetect' to see an address or how it decides what i2cdetect can use different approaches for probing, such as read / write command, tuned by command line options. The preview worked though from CAM1. Description. The following I²C is a communication protocol used to exchange information between cores. mmv danz ssqv owfznj wri mhqjibh xfrbdx wluign ocu wlvll