1 2 Previous Next 18 Replies Latest reply on Aug 29, 2016 11:24 AM by Intel Corporation

    Grove I2C Color Sensor not detected

    marco1971

      Hi All

       

       

      I'm trying to connect a Grove I2C Color Sensor ( http://www.seeedstudio.com/wiki/index.php?title=Twig_-_I2C_Color_Sensor_v0.9b ) to an Intel Edison Board.

       

       

      These is the suggested wiring I've followed (sensor to board):

      VCC to 5V

      GND to GND

      SDA to SDA pin on Edison

      SCl to SCL pin on Edison

       

       

      I've also done setup of I2C Bus as described on edisonarduino_hg_331191007.pdf chapter 16.6

      # echo 28 > /sys/class/gpio/export

      # echo 27 > /sys/class/gpio/export

      # echo 204 > /sys/class/gpio/export

      # echo 205 > /sys/class/gpio/export

      # echo 236 > /sys/class/gpio/export

      # echo 237 > /sys/class/gpio/export

      # echo 14 > /sys/class/gpio/export

      # echo 165 > /sys/class/gpio/export

      # echo 212 > /sys/class/gpio/export

      # echo 213 > /sys/class/gpio/export

      # echo 214 > /sys/class/gpio/export

      # echo low > /sys/class/gpio/gpio214/direction

      # echo high > /sys/class/gpio/gpio204/direction

      # echo high > /sys/class/gpio/gpio205/direction

      # echo in > /sys/class/gpio/gpio14/direction

      # echo in > /sys/class/gpio/gpio165/direction

      # echo low > /sys/class/gpio/gpio236/direction

      # echo low > /sys/class/gpio/gpio237/direction

      # echo in > /sys/class/gpio/gpio212/direction

      # echo in > /sys/class/gpio/gpio213/direction

      # echo mode1 > /sys/kernel/debug/gpio_debug/gpio28/current_pinmux

      # echo mode1 > /sys/kernel/debug/gpio_debug/gpio27/current_pinmux

      # echo high > /sys/class/gpio/gpio214/direction

       

      I've checked voltage values on SDA and SCL: about 4,8 V (used a multimeter)

       

      I supposed this was enough to see sensor working, but at the moment it seems there's somethign missing.

       

      1) Tried i2cdetect -y -r 1 and i2cdetect -y -r 6 --> no device is detected

      root@edison:~# i2cdetect -y -r 1

           0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f

      00:          -- -- -- -- -- -- -- -- -- -- -- -- --

      10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

      20: -- UU UU UU -- -- -- -- -- -- -- -- -- -- -- --

      30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

      40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

      50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

      60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

      70: -- -- -- -- -- -- -- --                      

      root@edison:~# i2cdetect -y -r 6

           0  1  2  3  4  5  6  7  8  9  a  b  c  d  e  f

      00:          -- -- -- -- -- -- -- -- -- -- -- -- --

      10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

      20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

      30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

      40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

      50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

      60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- --

      70: -- -- -- -- -- -- -- --                      

       

      2) tried also m2ctool (https://github.com/m2aglabs/m2ctool) --> no deivce detected

      3) tried GroveColorSensorDemo from https://github.com/Seeed-Studio/Grove_I2C_Color_Sensor with Arduino IDE --> see no RGB values from sensor

      4) tried Javascript sample from https://software.intel.com/en-us/iot/hardware/sensors/tcs3414cs-color-sensor with Intel Iot XDK --> see no RGB values from sensor

      5) tried I2CScanDevices.ino sketch from https://communities.intel.com/thread/60144 on Arduino IDE --> No sensor detected at any address

       

      I've tried also 1 to 5 after wiring sensor to Edison on A4 and A5 instead of SDA and SCL --> Again no effect

       

      Some questions:

       

      Is there someone who can tell me what I need to see Color Sensor correctly detected by Edison?

      Is there someone who has succeded in connecting Grove I2C Color Sensor to Edison that could list actions taken?

      Is there a way to check I2C bus is not damaged? Is there a way to re-initialise I2C in case it is stuck for any reason?

       

       

       

       

      Thanks

      Regards

      Marco

        • 1. Re: Grove I2C Color Sensor not detected
          Intel Corporation
          This message was posted on behalf of Intel Corporation

          Hi marco,

           

          Could you please try entering the following instructions to configure the I2C interface? Lines 15 and 16 are not present on the Hardware Guide, but once I was able to solve the issue by adding these two lines so this might work for you too.

          echo 28 > /sys/class/poi/export
          echo 27 > /sys/class/poi/export
          echo 204 > /sys/class/poi/export
          echo 205 > /sys/class/poi/export
          echo 236 > /sys/class/poi/export
          echo 237 > /sys/class/poi/export
          echo 14 > /sys/class/poi/export
          echo 165 > /sys/class/poi/export
          echo 212 > /sys/class/poi/export
          echo 213 > /sys/class/poi/export
          echo 214 > /sys/class/poi/export
          echo low > /sys/class/poi/gpio214/direction
          echo high > /sys/class/poi/gpio204/direction
          echo high > /sys/class/poi/gpio205/direction
          echo 0 > /sys/class/poi/gpio204/value
          echo 0 > /sys/class/poi/gpio205/value
          echo in > /sys/class/poi/gpio14/direction
          echo in > /sys/class/poi/gpio165/direction
          echo low > /sys/class/poi/gpio236/direction
          echo low > /sys/class/poi/gpio237/direction
          echo in > /sys/class/poi/gpio212/direction
          echo in > /sys/class/poi/gpio213/direction
          echo mode1 > /sys/kernel/debug/gpio_debug/gpio28/current_pinmux
          echo mode1 > /sys/kernel/debug/gpio_debug/gpio27/current_pinmux
          echo high > /sys/class/gpio/gpio214/direction
          

           

          Run i2cdetect once more to check if there’s anything different and let us know your results. 

           

          Regards,
          -Pablo

          • 2. Re: Grove I2C Color Sensor not detected
            marco1971

            Thanks a lot Pablo.

            Unfortunately now will take few days for me to test your solution.

            I'll get back to you as soon I've tested

            Regards

            Marco

            • 3. Re: Grove I2C Color Sensor not detected
              Intel Corporation
              This message was posted on behalf of Intel Corporation

              Hi Marco,

               

              That's ok! Let us know once you're ready to give it a try.

               

              Regards,
              -Pablo

              • 4. Re: Grove I2C Color Sensor not detected
                marco1971

                Dear Pablo

                 

                image version on my Edison is 159.devkit. Paths like

                "/sys/class/poi/"

                are not available.

                I've changed the script you sent to:

                echo 28 > /sys/class/gpio/export 

                echo 27 > /sys/class/gpio/export 

                echo 204 > /sys/class/gpio/export 

                echo 205 > /sys/class/gpio/export 

                echo 236 > /sys/class/gpio/export 

                echo 237 > /sys/class/gpio/export 

                echo 14 > /sys/class/gpio/export 

                echo 165 > /sys/class/gpio/export 

                echo 212 > /sys/class/gpio/export 

                echo 213 > /sys/class/gpio/export 

                echo 214 > /sys/class/gpio/export 

                echo low > /sys/class/gpio/gpio214/direction 

                echo high > /sys/class/gpio/gpio204/direction 

                echo high > /sys/class/gpio/gpio205/direction 

                echo 0 > /sys/class/gpio/gpio204/value 

                echo 0 > /sys/class/gpio/gpio205/value 

                echo in > /sys/class/gpio/gpio14/direction 

                echo in > /sys/class/gpio/gpio165/direction 

                echo low > /sys/class/gpio/gpio236/direction 

                echo low > /sys/class/gpio/gpio237/direction 

                echo in > /sys/class/gpio/gpio212/direction 

                echo in > /sys/class/gpio/gpio213/direction 

                echo mode1 > /sys/kernel/debug/gpio_debug/gpio28/current_pinmux 

                echo mode1 > /sys/kernel/debug/gpio_debug/gpio27/current_pinmux 

                echo high > /sys/class/gpio/gpio214/direction

                 

                but no effect:

                -still no device found with i2cdetect -y -r 1 or i2cdetect -y -r 6 with both connection to A4/A5 or SDA/SCL

                -still no rgb values with arduino sketch or JS sample on Intel Iot XDK

                 

                Sensor seems alive (voltage on sda/scl pins, led light is on)

                 

                Any other suggestion? Please advise.

                 

                Thanks

                Marco

                • 5. Re: Grove I2C Color Sensor not detected
                  Intel Corporation
                  This message was posted on behalf of Intel Corporation

                  Hi Marco,

                  We are still investigating your case, as soon as we have an answer we will let you know. We appreciate your patience in the meantime.

                  Regards,
                  -Pablo

                  • 6. Re: Grove I2C Color Sensor not detected
                    marco1971

                    Meanwhile, let me update you with the latest test I've made:

                    -I've tried test tools found in https://github.com/fivdi/edison-i2c-config and https://github.com/fivdi/i2c-bus:

                     

                    I2C on Eidson board seems fine, but anyway Grove I2C Color Sensor is not detected. Perhaps there's something wrong in wiring/voltage levels on pins?

                     

                    While waiting for your precious hints

                     

                    Regards

                    Marco

                    • 7. Re: Grove I2C Color Sensor not detected
                      Intel Corporation
                      This message was posted on behalf of Intel Corporation

                      Hi Marco,

                      We don’t have the sensor in our laboratory so we will order it and will do some testing so this might take some time. Also, not all I2C devices are compatible with the Edison, hopefully this won’t be the case for this one, but it is something to take into account.
                      Thank you for your patience.

                      Regards,
                      -Pablo

                      • 8. Re: Grove I2C Color Sensor not detected
                        marco1971

                        Dear Pablo,

                        to ensure compatibility with Edison I've checked the sensor on the Intel link https://software.intel.com/en-us/iot/hardware/sensors/tcs3414cs-color-sensor

                         

                        Anyway, If some particular wiring must be made around the sensor (pull up resistors, adjust In/out voltage levels) in order to make it compatible with Edison, just send me the info and I'll provide it.

                         

                        While waiting for your feddback

                         

                        Thanks and Regards

                        Marco

                         

                         

                        • 9. Re: Grove I2C Color Sensor not detected
                          Intel Corporation
                          This message was posted on behalf of Intel Corporation

                          Hi Marco,

                          Thank you for your patience on this case.
                          Sensor has arrived and after some testing we found out that the i2c color sensor works with 3.3V, Edison can detect the 0x39 address on bus 6. So we would suggest you to please try 3.3V instead of 5V, hopefully that should solve the issue.

                          Regards,
                          -Pablo

                          • 10. Re: Grove I2C Color Sensor not detected
                            marco1971

                            Thank you so much Pablo.

                            Do you mean I have to change position to some jumper (perhaps IOREF J9 ?) on the board? Or simply I have to connect the vcc pin of the sensor to the 3.3V power on the board?

                            Could you explain a bit more wiring&setup?

                             

                            Thanks again

                            Marco

                            • 11. Re: Grove I2C Color Sensor not detected
                              Intel Corporation
                              This message was posted on behalf of Intel Corporation

                              Hi Marco,

                              We used your configuration, just make sure to use A4 and A5 of the Edison Arduino board, I guess that’s what you meant by SDL and SDA from the Edison. And we just provided 3.3V from the Edison to the sensor. So, go on and configure the I2C using the Edison Hardware Guide and then use the A4 and A5 from the board, as stated in the document.

                              Regards.
                              -Pablo

                              • 12. Re: Grove I2C Color Sensor not detected
                                Intel Corporation
                                This message was posted on behalf of Intel Corporation

                                Hi Marco,

                                Do you have updates on this case?

                                Regards,
                                -Pablo

                                • 13. Re: Grove I2C Color Sensor not detected
                                  marco1971

                                  Sorry for the delay Pablo.

                                  Unfortunately, even after:

                                  i2c configuration according to edison hardware guide (specified above in this thread) and

                                  having set sensor supply to 3.3V

                                   

                                  I have the same result:

                                  sensor is not detected with i2cdetect -y -r 6 and

                                  weird result on arduino sketch and intel xdk sample script 

                                   

                                  (I'm beginnig to think that maybe my sensor got some defect)

                                   

                                  Thanks

                                  Regards

                                  Marco

                                  • 14. Re: Grove I2C Color Sensor not detected
                                    Intel Corporation
                                    This message was posted on behalf of Intel Corporation

                                    Hi marco,

                                    It would be a good idea to test the sensor on a different device, just to see if you get the same behavior. That way you’ll know if the sensor is indeed defective.

                                    Regards,
                                    -Pablo

                                    1 2 Previous Next