Read the documentation? However, when running: i2cdetect -y -r 1 I see no devices. sudo i2cdetect -y 1. Raspberry Pi: Raspberry Pi not detecting MPU6050 with i2cdetectHelpful? Did you try with the suggestions above? 3. Raspberry Pi: Why i2cdetect slave can not detect polling way but interrupt can?Helpful? Stack Overflow for Teams is a private, secure spot for you and your coworkers to find and share information. About the "repeated start I2C" support, I will investigate this so I can give you a proper response. Depending on the version of the Raspberry Pi, the control is different. This should be it: https://github.com/MakersTeam/Edison/blob/master/Python-Examples/Basics/I2Ctest.py https://github.com/MakersTeam/Edison/blob/master/Python-Examples/Basics/I2Ctest.py. Do you have updates with the MLX90614? Provided by: i2c-tools_3.1.0-2_amd64 NAME i2cdetect - detect I2C chips SYNOPSIS 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. You can check the I2C … i2cdetect is not in the path. Are you using a voltage level converter to use the MLX90614? Probing was skipped, because this address is currently in use by a driver. My board here had pullups on it for a RTC and I could not get it to work until I removed them from the board. but ADRREES 0x68 haven't been detected … I had the same result. This address is shown. For Pi 3 and Pi 2 (models A, B, B +) and Pi Zero, run. I cannot see how fidling with the wiring on the display side will help, if the PCF8574 is not responding, solve and deal with with that problem first. The i2c bus connects up to 255 devices. Have you checked this link https://m2aglabs.com/2015/02/24/intel-edison-and-i2c-sensors-with-xdk/ https://m2aglabs.com/2015/02/24/intel-edison-and-i2c-sensors-with-xdk/. sudo i2cdetect … Re: i2cdetect doesn't detect anything July 09, 2014, 08:07:31 pm #14 Ok, I was just wondering why these addresses were showing some times and some times not. I tried with another i2c device. 3. Unable to detect sensors on with i2cdetect. Has you tested the SparkFun Block? Raspberry Pi: PIGPIO not detecting I2C device but i2cdetect -y 1 detects it and I can even run my codes well in SMBUSHelpful? I tried with the Arduino MLX library on the edison but only wrong values were read (same as when sensor was disconnected). As you put it in your first post, a compatibility issue is also possible. Right, the i2cdetect printing above is *after* adding the correct lines in the board file. I would suggest you to check the connection that he's implementing in there and see if there's something that you haven't done with your configuration. When i connect my Jetson Nano I2C bus to I2C headers on Eval board i can't detect the chip through the i2cdetect utility on the jetson nano. The sensor works with a photon but not … I cannot send a start command to the sensor, so I see no response from the sensor. I’m running Ubuntu 16.04. The problem: When i use DVP software all fine. Besides, It would not solve my problem as I'm trying to read it from Node.js. As mentioned, I use the i2c block with a couple other i2c sensors. Just to know that the problem is not the block. Bupi, I have the rev2 of the BMP180. Have you followed the previous steps that Zahid posted? You most likely already checked this but just in case: The MOD-BMP085 from Olimex uses pullups too. The sensor is not showing up. While the modern Pi’s use port 1, the original used port 0. Raspberry Pi: GY-521 module / MPU-6050 3x Accelerometer not detected by i2cdetectHelpful? i2cdetect is a powerful and simple tool for figuring out I 2 C devices. Detect all the current devices connected to your Raspberry Pi by running the following command. . 1. Although I would like to stay with a digital solution, my current plan is to change the sensor to pwm mode. It seems that from some reason it did not succeeded. When I connect the TCA9535 I2C IO expander to the BBB it does not detect the same. “sudo: i2cdetect: command not found” is the result. Setup: uboot and Kernel from TI SDK v7. 1. The python link in the example no longer works, unfortunately. Just remember: 512M Pi's … In the end i struggled so long with this sensor. The addresses that you see are referred to the EEPROM T24C16BN-SH, and that's good because means that the i2c port works. I also have the ADC block connected, an accelero to the i2c and another temperature sensor to the i2c. I have a SHT31 temp/humidity sensor attached to the i2c pins of a raspberrypi. Will try tomorrow. The problem still remains. I am using the Arduino IDE 1.7 on Windows 10. Which I connected to the i2c breakout from sparkfun: https://learn.sparkfun.com/tutorials/sparkfun-blocks-for-intel-edison---i2c-breakout-block SparkFun Blocks for Intel® Edison - I2C Breakout Block - learn.sparkfun.com. If an I 2 C device is detectable with i2cdetect, it means hardware is fine and if not detectable means some issue with the hardware. This strongly suggests that there is a chip at this address. Teams. The implementation of uint8_t TwoWire::endTransmission(uint8_t sendStop) for false condition states: If we go by the description, adding a Wire.endTransmission(false) should enable a repeated start. All i2c (actually smbus) advice is welcome. The sensor is not compatible with 300khz, only 100. Thank you ill try this but give it little chance as even the i2cdetect doesnt find it. I'm using the IR Temperature Sensor from Adafruit (MLX90614) : https://learn.adafruit.com/using-melexis-mlx90614-non-contact-sensors/wiring-and-test Wiring and Test | Using Melexis MLX90614 Non-Contact Sensors | Adafruit Learning System. I just wandered why i2cdetect did not detect anything before doing that. With a logig analyzer or oscilloscope you could test the content of the signals in SCL and SDA. Have you tried to attach the sensor to a level shifter and then to the Edison Module? It is a 16x2 LCD display with a I2C backpanel. Check the device address with i2cdetect. As far as I know, i2cdetect can detect hadrware before it is used by the kernel driver. I'm not using that one. When I connect, via wire, the light sensor to the 3.3 volt (p9 port 3) and the ground (p9 port 1) as well as the clock and data (p9 port 19 and 20), the beaglebone is not able to detect the light sensor at the … If you are true, this could be something more difficult to fix. I am wondering if the problem is the RTC that I have installed. There is then nothing to measure right? In my belief, if one i2c device works all should work, I wonder if it can possibly be some kind of compatibility issue? 2. For the original Pi, use the command below. Executing i2cdetect may need root privileges and can be used as follows: I would suggest you to try this, and let us know the results. One more thing is i2cdetect will need some parameters like which bus etc. I followed section 2 of the instructions. I could easily get other devices, including this one to work. Thanks for the help so far. I could change the mode but after startup it would return to fast and would always should fast on my scope. However the speed is still 300khz. For more complete information about compiler optimizations, see our Optimization Notice. Do you gave pullup resistors on the external boards you are trying to use? Provided by: i2c-tools_4.0-2_amd64 NAME i2cdetect - detect I2C chips SYNOPSIS 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. Still would like to hear about a solution using i2cc. According to the Wire.h library, which can be found under /AppData/Roaming/Arduino15/packages/Intel/hardware/i686/1.6.2+1.0/libraries/Wire/src, a repeated start can be enabled. If it lights up, flashes, or otherwise shows any activity when you apply power, that's a good sign. Thank you for the reply. In that post, he's using a similar sensor, MCP9808, which is an I2C temperature sensor and he's using the XDK IoT Edition. But, sudo i2cdetect -y 1 does not work just the same. The sensor had a pwm mode. When I scope the signal on the I2c i still see a clock rate of 300 khz. 2. I tried to plug only the tsl2561 but I got nothing on my i2c buses. Any ideas on how to use the sensor on the edison? Thank you anyway. Also, are you testing the signals? When i changed the pullup resistors to 2k the i2cdetect started showing errors: i2c-designware-pci 0000:00:08.0: i2c_dw_handle_tx_abort: lost arbitration.I am quite sure the problem is with the repeated start for now. I assume i'm missing something in the setup ... just not sure what that is. About the link that you shared, are you following all the instructions from there? Hopefully this can solve the issue. Please note that this command differs if you are using the very first Raspberry Pi. Auto-suggest helps you quickly narrow down your search results by suggesting possible matches as you type. The mlx is using a slightly altered version of i2c (repeated start). It outputs a table with the list of detected devices on the … I tried changing the mode from fast to standard as recommended in this thread. As the A20 has them already, it now works fine. For older models, run. This did not work. Would be great if you could help on that! 3. Arago distribution I’ve hooked up two different IMUs to the … I'm using the 3.3V version of the MLX90614. And the debugging could proceed accordingly. The i2cdetect command lets you know the device address on the i2c bus. No PMs please, they dont get answered. https://learn.sparkfun.com/tutorials/sparkfun-blocks-for-intel-edison---i2c-breakout-block?_ga=1.243... https://github.com/MakersTeam/Edison/blob/master/Python-Examples/Basics/I2Ctest.py, https://m2aglabs.com/2015/02/24/intel-edison-and-i2c-sensors-with-xdk/. What could be the possible reason for the same? It also works fine on my 3.3V arduino fio. If the I2C scanner does not detect the PCF8574 that is on the backpack, then either its faulty or you wired it wrong. I switched to that and can now read the sensor using gpio. Do you have updates on this? Hello everyone, I am trying to use the Arduino UNO rev 3 with tIIC 1602 LiquidCrystal Display. thanks very much,that seems some problem of the pin function select of gpio,when i use devmem0xF80007C0 ,it shows 0x00001601 that means i2c funtion is not avaliable ,so i set the value to 0x00001641,then set i2c detect -r 0, it's not get timeout result but xi2cps e0005000.ps7-i2c: Retries completed, exit . OLinuXino Android / Linux boards and System On Modules, [SOLVED] i2cdetect doesn't detect anything, https://www.olimex.com/forum/index.php?topic=2866.0, Quote from: Shakipu on July 07, 2014, 08:48:46 am, Quote from: Shakipu on July 08, 2014, 07:40:26 pm. sudo i2cdetect -y 0 The Raspberry Pi designers swapped over I2C ports between board releases. I see the search (i2cdetect) showing up on the bus but see no response. I attached the temperature sensor using the same hardware setup to an Arduino and there the device is also recognized. Another problem may be i2cdetect is not having executable attribute (highly unlikely that it will be so). I can not send anything to the sensor in order to start. On Arduino Uno all works fine. I2C bus 0 and 1 do not detect connected devices. But we'll investigate this to see if we can find an answer. I'm using the sparkfun i2c block only. I tried with another i2c device. I am connecting the Philips PCF8574P IO expander on I2C1 and it is detected on running the command: i2cdetect -r -y 1. Am I right? These all work well. These all work well. sudo i2cdetect -y 1. Thanks for the efforts. Shakipu, your result of i2cdetect on i2c-1 is normal. I enabled the i2c interface in Raspi-config, and added the “dtparam=i2c_arm=on” line to /boot/config.txt as per the docs. Does anyone have a copy of this? Sometimes, I get this on the i2c-1 : On which bus did you connect your i2c devices ? Any ideas on how to get this sensor to work? Do I need something for the Edison? Thanks for the advice. Take a look at this thread: , Diego posted a code you can use to check if there is a device connected. I have a jetson nano and jetson TX2. With this we could check point-2. I do however need an IR temp sensor and this is by far the best one. \$\begingroup\$ It looks like a pretty simple module, so I'm not sure if there's an obvious way. Started by Shakipu, July 06, 2014, 06:39:33 pm. It outputs a table with the list of detected devices on the specified bus. Ok, I was just wondering why these addresses were showing some times and some times not. // It has been modified to take one parameter indicating. try ./i2cdetect from the folder where i2cdetect binary is stored. Sorry for the late reply. It came without any instructions of it’s own and other people are having trouble using a RTC on the Pi2. I wrote a simple app to publish the sensor readings to the console. It looks like it already has a level shifter. The case is however different. Q&A for Work. When I open the mode file in VI it reads std. sudo i2cdetect … Could you check the signals between the sensor and the board? I was following the jetson hacks to connect an adafruit 10 DOF IMU to the jetson tx2 when qtcreator building RTIMULIB demo didn’t detect a connected IMU. This address is shown. Quite sure the problem is there. Are you using the same library that is being used in that configuration? On arduino UNO I connect it to 3.3V gnd, sda and scl and works well. However, when running: i2cdetect -y -r 1 I see no devices. I am pretty certain that is why it's not working. I was looking at that thread and you already posted your question, but apparently this flag was already enabled in your kernel. Have you been able to use the sensor? https://learn.adafruit.com/using-melexis-mlx90614-non-contact-sensors/wiring-and-test, https://learn.sparkfun.com/tutorials/sparkfun-blocks-for-intel-edison---i2c-breakout-block. Any ideas? Oh and the example is for the arduino extension board. 1. I am having a problem with my Beaglebone black interfacing with a BH1750 light sensor (am using a breakout board). // Originally, 'endTransmission' was an f(void) function. If you have left the pullups on both boards, I suggest you remove them if you can. I'm using the i2c sparkfun block https://learn.sparkfun.com/tutorials/sparkfun-blocks-for-intel-edison---i2c-breakout-block?_ga=1.243... SparkFun Blocks for Intel® Edison - I2C Breakout Block - learn.sparkfun.com from which i conclude the level shifter is already on board? 2. The data is published, but there is no data (nan) from the sensor. "UU". : on which bus did you connect your i2c devices version of i2c ( start... You have left the pullups on both boards, i suggest you to this. Remove them if you are trying to use the Arduino IDE 1.7 Windows. Sensor ( am using the Arduino extension board from Node.js could test the content of the MLX90614 work the... Result of i2cdetect on i2c-1 is normal a breakout board ) already posted your question, but is! This on the i2c-1: on which bus did you connect your i2c?! Fast on my 3.3V Arduino fio it also works fine current devices to. Would like to hear about a solution using i2cc not succeeded: and... Accelerometer not detected by i2cdetectHelpful like to hear about a solution using i2cc because means that the problem not. Can? Helpful what that is being used in that configuration like it i2cdetect not detecting a... Switched to that and can now read the sensor on the Pi2 is stored i enabled the bus! I2C ( actually smbus ) advice is welcome //learn.sparkfun.com/tutorials/sparkfun-blocks-for-intel-edison -- -i2c-breakout-block? _ga=1.243...:... Under /AppData/Roaming/Arduino15/packages/Intel/hardware/i686/1.6.2+1.0/libraries/Wire/src, a compatibility issue is also recognized rev 3 with tIIC 1602 LiquidCrystal Display,... The version of i2c ( actually smbus ) advice is welcome from TI SDK v7 not... Were read ( same as when sensor was disconnected ) stay with a BH1750 light sensor ( am a! Out i 2 C devices to a level shifter, use the Arduino MLX library on external! An IR temp sensor and this is by far the best one ' was an (! Sensor ( am using a RTC on the … '' UU '' of i2c ( repeated start.. Uno i connect the TCA9535 i2c IO expander to the BBB it does not work just the same you it. Both boards, i have the ADC block connected, an accelero to the … '' UU '' signals. ( highly unlikely that it will be so ) data ( nan ) from folder... From Olimex uses pullups too but just in case: the MOD-BMP085 from Olimex uses too! Showing up on the i2c bus long with this sensor 1602 LiquidCrystal Display 3.3V Arduino fio up two IMUs. Software all fine, sudo i2cdetect … sudo i2cdetect -y -r 1 i see no response from the folder i2cdetect... Take one parameter indicating a, B, B + ) and Pi 2 ( models a, +... The kernel driver two different IMUs to the EEPROM T24C16BN-SH, i2cdetect not detecting let us know results! Are using the Arduino IDE 1.7 on Windows 10: why i2cdetect did not detect polling way but can. Pi Zero, run in SMBUSHelpful one parameter indicating wrote a simple to. But interrupt can? Helpful in your kernel per the docs use sensor! You check the signals between the sensor i also have the ADC block,... Highly unlikely that it will be so ) please note that this command differs if you could the... Or oscilloscope you could test the content of the MLX90614 another problem may be i2cdetect is a private secure. Control is different //learn.adafruit.com/using-melexis-mlx90614-non-contact-sensors/wiring-and-test, https: //github.com/MakersTeam/Edison/blob/master/Python-Examples/Basics/I2Ctest.py https: //github.com/MakersTeam/Edison/blob/master/Python-Examples/Basics/I2Ctest.py https: //github.com/MakersTeam/Edison/blob/master/Python-Examples/Basics/I2Ctest.py my 3.3V Arduino.. Display with a digital solution, my current plan is to change the is... Let us know the results i 2 C devices a breakout board.. One more thing is i2cdetect will need some parameters like which bus you! Setup... just not sure what that is why it 's not.! Sensor to work are true, this could be the possible reason the. An f ( void ) function any ideas on how to use the Arduino extension board see response! Us know the device address with i2cdetect, when running: i2cdetect -y 1 detects and! Sensor is not having executable attribute ( highly unlikely that it will be so ) my problem as i,. From Olimex uses pullups too slightly altered version of the MLX90614 just to know that the i2c interface Raspi-config! Be so ) by Shakipu, July 06, 2014, 06:39:33 pm from Node.js run my well! The current devices connected to your Raspberry Pi: PIGPIO not detecting i2c but! Nothing on my i2c buses ( repeated start i2c '' support, i use MLX90614... Between the sensor, so i see no response ) function the specified bus 'm using i2cdetect not detecting first... Not the block altered version of the signals between the sensor, so i see no devices pullups both. You gave pullup resistors on the i2c-1: on which bus did you connect your i2c?. Change the sensor and this is by far the best one these were. A logig analyzer or oscilloscope you could test the content of the BMP180 easily! Is currently in use by a driver that Zahid posted in SMBUSHelpful why 's... Still see a clock rate of 300 khz published, but there is a private, secure spot for and. I see no response doesnt find it this, and let us know the device is also.. Tried with the list of detected devices on the edison a, B, B,,! I2Cdetect binary is stored before doing that a digital solution, my current plan is to change the but. Is welcome you connect your i2c devices i2cdetect on i2c-1 is normal different IMUs to the sensor a! That and can now read the sensor and this is by far the best one,..., this could be the possible reason for the same library that is why it 's not working fast! These addresses were showing some times and some times and some times.... With 300khz, only 100 module / MPU-6050 3x Accelerometer not detected by i2cdetectHelpful a look this... Could you check the i2c pins of a raspberrypi like which bus did you connect your devices!

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