PRU won't initialize for hcsr-04 ultrasonic sensor (Beaglebone black)












0















In order to use the hcsr-04 ultrasonic sensor using BBB's PRU, I have tried this git :
https://github.com/HudsonWerks/Range-Sensor-PRU



I get the error "the PRU failed to open", when I try to start "rangepru".
Doing some research, I feel like that is because my PRU is not initialized and that I should do : "echo BB-BONE-PRU-01 > /sys/devices/bone_capemgr.8/slots" to correct it.



But with the recent debian versions (4.x), the cape manager changed and I found the file "slots" at:
/sys/devices/platform/bone_capemgr/slots ; BUT, there is no way to open, modify it :
- using "nano" I get "slots.swp Permission denied"
- and by typing the correct echo command (modified from the one above) : I get : "write error: No such file or directory"



Best regards,
Elrise






sensor beagleboneblack proximitysensor







share|improve this question



























    0















    In order to use the hcsr-04 ultrasonic sensor using BBB's PRU, I have tried this git :
    https://github.com/HudsonWerks/Range-Sensor-PRU



    I get the error "the PRU failed to open", when I try to start "rangepru".
    Doing some research, I feel like that is because my PRU is not initialized and that I should do : "echo BB-BONE-PRU-01 > /sys/devices/bone_capemgr.8/slots" to correct it.



    But with the recent debian versions (4.x), the cape manager changed and I found the file "slots" at:
    /sys/devices/platform/bone_capemgr/slots ; BUT, there is no way to open, modify it :
    - using "nano" I get "slots.swp Permission denied"
    - and by typing the correct echo command (modified from the one above) : I get : "write error: No such file or directory"



    Best regards,
    Elrise






    sensor beagleboneblack proximitysensor







    share|improve this question

























      0












      0








      0








      In order to use the hcsr-04 ultrasonic sensor using BBB's PRU, I have tried this git :
      https://github.com/HudsonWerks/Range-Sensor-PRU



      I get the error "the PRU failed to open", when I try to start "rangepru".
      Doing some research, I feel like that is because my PRU is not initialized and that I should do : "echo BB-BONE-PRU-01 > /sys/devices/bone_capemgr.8/slots" to correct it.



      But with the recent debian versions (4.x), the cape manager changed and I found the file "slots" at:
      /sys/devices/platform/bone_capemgr/slots ; BUT, there is no way to open, modify it :
      - using "nano" I get "slots.swp Permission denied"
      - and by typing the correct echo command (modified from the one above) : I get : "write error: No such file or directory"



      Best regards,
      Elrise






      sensor beagleboneblack proximitysensor







      share|improve this question














      In order to use the hcsr-04 ultrasonic sensor using BBB's PRU, I have tried this git :
      https://github.com/HudsonWerks/Range-Sensor-PRU



      I get the error "the PRU failed to open", when I try to start "rangepru".
      Doing some research, I feel like that is because my PRU is not initialized and that I should do : "echo BB-BONE-PRU-01 > /sys/devices/bone_capemgr.8/slots" to correct it.



      But with the recent debian versions (4.x), the cape manager changed and I found the file "slots" at:
      /sys/devices/platform/bone_capemgr/slots ; BUT, there is no way to open, modify it :
      - using "nano" I get "slots.swp Permission denied"
      - and by typing the correct echo command (modified from the one above) : I get : "write error: No such file or directory"



      Best regards,
      Elrise






      sensor beagleboneblack proximitysensor




      sensor beagleboneblack proximitysensor






      share|improve this question













      share|improve this question











      share|improve this question




      share|improve this question










      asked Jan 2 at 17:07









      ElriseElrise

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          You are probably missing a suitable device tree driver.



          Try to follow the instructions on:



          https://github.com/luigif/hcsr04



          related to the compilation and installation of the driver.



          If you have a proper development environment, executing make install should do everything for you.






          share|improve this answer























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            1 Answer
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            active

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            0














            You are probably missing a suitable device tree driver.



            Try to follow the instructions on:



            https://github.com/luigif/hcsr04



            related to the compilation and installation of the driver.



            If you have a proper development environment, executing make install should do everything for you.






            share|improve this answer




























              0














              You are probably missing a suitable device tree driver.



              Try to follow the instructions on:



              https://github.com/luigif/hcsr04



              related to the compilation and installation of the driver.



              If you have a proper development environment, executing make install should do everything for you.






              share|improve this answer


























                0












                0








                0







                You are probably missing a suitable device tree driver.



                Try to follow the instructions on:



                https://github.com/luigif/hcsr04



                related to the compilation and installation of the driver.



                If you have a proper development environment, executing make install should do everything for you.






                share|improve this answer













                You are probably missing a suitable device tree driver.



                Try to follow the instructions on:



                https://github.com/luigif/hcsr04



                related to the compilation and installation of the driver.



                If you have a proper development environment, executing make install should do everything for you.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Feb 6 at 15:10









                luigifluigif

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