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    Setting up OrangePi 3 LTS

    Scheduled Pinned Locked Moved Unsolved
    DSF Development
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    • Dakotaundefined
      Dakota
      last edited by Dakota

      I've recently got my hands on an OrangePi 3 LTS and have been able to get pretty far along the set up process listed in the docs for other boards. I'm having quite a bit of trouble now at the GPIO Stage / running of the duetcontrolserver. I have spent quite a while trying to understand where I'm going wrong, but in all honesty there's only so much a mechanical engineer with access to ChatGPT and very little knowledge about linux can do... I have it hooked up to a duet 3 6hc via the ribbon cable (and I did check that the pinout for the SPI pins is the same.) regardless I keep receiving fatal errors when trying to start up the server because it failed to open the gpio device. can anyone point me in the right direction on how to resolve this error?

      (at first I did have the incorrect transfer pin GPIO number and Chip number incorrect, but I believe I have since resolved that.)

      P.S.
      I am running the Debian 11 flavor downloaded from OrangePi's website

      Screenshot 2023-04-05 at 8.38.44 AM.png Screenshot 2023-04-05 at 8.36.59 AM.png Screenshot 2023-04-05 at 8.36.06 AM.png

      chrishammundefined Falcounetundefined 2 Replies Last reply Reply Quote 0
      • chrishammundefined
        chrishamm administrators @Dakota
        last edited by chrishamm

        @Dakota If DCS cannot put that line into event mode, that's usually an indicator that the given pin is either not accessible or it is still allocated by SysFS. You may need to unexport it before DSF can use it (see /sys/class/gpio, maybe you can achieve that by sending echo 2 | sudo tee /sys/class/gpio/unexport according to https://f1atb.fr/index.php/2022/01/20/orange-pi-gpio/).

        Duet software engineer

        Dakotaundefined 1 Reply Last reply Reply Quote 0
        • Dakotaundefined
          Dakota @chrishamm
          last edited by

          @chrishamm thank you for the reply!

          so my specific ability to edit and control the gpio pins is different as orangepi uses a fork of "wiringPi" called "wiringOP". From there I am able to unexport using:

          gpio unexport 13 out

          I am also able to change the mode and value using:

          gpio mode 13 in/out/pwn/clock/up/down/tri
gpio write 13 0/1

          where I get lost now is I have no idea what mode or value to change it to for DSF to be able to use it...

          chrishammundefined 1 Reply Last reply Reply Quote 0
          • chrishammundefined
            chrishamm administrators @Dakota
            last edited by chrishamm

            @Dakota There are two sets of utilities for controlling GPIO pins, one is SysFS (which WiringPi and probably WiringOP use AFAIR) and the other one is gpiod (which DSF uses for performance reasons). The pin numbering is different depending on the subsystem used. You should use the gpioinfo utility from the gpiod utils instead of gpio readall which probably uses the wrong GPIO interface. Please make sure to follow https://github.com/Duet3D/DuetSoftwareFramework/wiki/SBC-Setup-Guide#link-between-the-duet-and-sbc as some extra steps are also required to get DSF to operate nicely on different SBCs.

            Duet software engineer

            Dakotaundefined 1 Reply Last reply Reply Quote 0
            • Falcounetundefined
              Falcounet @Dakota
              last edited by Falcounet

              @Dakota 117 seems ok from the formula used by the sunxi driver : (position of letter in alphabet - 1) * 32 + pin number
              So in your case, the pin 22 is mapped to PD21 (See the image below but that is also wrote in your gpio readall output)
              as D is the 4th letter : (4-1) * 32 + 21 = 117.
              641d2461-170e-4320-ab51-c28072e27bbf-image.png

              However, I believe the GPIO chip device /dev/gpiochip1 you are using is incorrect.
              gpioinfo which is provided by gpiod package may give you more clue about that.

              Dakotaundefined 1 Reply Last reply Reply Quote 0
              • Dakotaundefined
                Dakota
                last edited by

                @Falcounet I tried using both chip0 and chip1 which didn't change the outcome...

                here is my list from running gpioinfo:

                gpiochip0 - 64 lines:
                line 0: unnamed kernel input active-high [used]
                line 1: unnamed kernel input active-high [used]
                line 2: unnamed unused input active-high
                line 3: unnamed unused input active-high
                line 4: unnamed "red-led" output active-high [used]
                line 5: unnamed unused input active-high
                line 6: unnamed unused input active-high
                line 7: unnamed "green-led" output active-high [used]
                line 8: unnamed unused input active-high
                line 9: unnamed kernel input active-high [used]
                line 10: unnamed unused input active-high
                line 11: unnamed unused input active-high
                line 12: unnamed unused input active-high
                line 13: unnamed unused input active-high
                line 14: unnamed unused input active-high
                line 15: unnamed unused input active-high
                line 16: unnamed unused input active-high
                line 17: unnamed unused input active-high
                line 18: unnamed unused input active-high
                line 19: unnamed unused input active-high
                line 20: unnamed unused input active-high
                line 21: unnamed unused input active-high
                line 22: unnamed unused input active-high
                line 23: unnamed unused input active-high
                line 24: unnamed unused input active-high
                line 25: unnamed unused input active-high
                line 26: unnamed unused input active-high
                line 27: unnamed unused input active-high
                line 28: unnamed unused input active-high
                line 29: unnamed unused input active-high
                line 30: unnamed unused input active-high
                line 31: unnamed unused input active-high
                line 32: unnamed unused input active-high
                line 33: unnamed unused input active-high
                line 34: unnamed unused input active-high
                line 35: unnamed "reset" output active-low [used]
                line 36: unnamed unused input active-high
                line 37: unnamed unused input active-high
                line 38: unnamed unused input active-high
                line 39: unnamed unused input active-high
                line 40: unnamed unused input active-high
                line 41: unnamed unused input active-high
                line 42: unnamed unused input active-high
                line 43: unnamed unused input active-high
                line 44: unnamed unused input active-high
                line 45: unnamed unused input active-high
                line 46: unnamed unused input active-high
                line 47: unnamed unused input active-high
                line 48: unnamed unused input active-high
                line 49: unnamed unused input active-high
                line 50: unnamed unused input active-high
                line 51: unnamed unused input active-high
                line 52: unnamed unused input active-high
                line 53: unnamed unused input active-high
                line 54: unnamed unused input active-high
                line 55: unnamed unused input active-high
                line 56: unnamed unused input active-high
                line 57: unnamed unused input active-high
                line 58: unnamed unused input active-high
                line 59: unnamed unused input active-high
                line 60: unnamed unused input active-high
                line 61: unnamed unused input active-high
                line 62: unnamed unused input active-high
                line 63: unnamed unused input active-high

                Dakotaundefined 1 Reply Last reply Reply Quote 0
                • Dakotaundefined
                  Dakota @Dakota
                  last edited by

                  gpiochip1 - 256 lines:
                  line 0: unnamed unused input active-high
                  line 1: unnamed unused input active-high
                  line 2: unnamed unused input active-high
                  line 3: unnamed unused input active-high
                  line 4: unnamed unused input active-high
                  line 5: unnamed unused input active-high
                  line 6: unnamed unused input active-high
                  line 7: unnamed unused input active-high
                  line 8: unnamed unused input active-high
                  line 9: unnamed unused input active-high
                  line 10: unnamed unused input active-high
                  line 11: unnamed unused input active-high
                  line 12: unnamed unused input active-high
                  line 13: unnamed unused input active-high
                  line 14: unnamed unused input active-high
                  line 15: unnamed unused input active-high
                  line 16: unnamed unused input active-high
                  line 17: unnamed unused input active-high
                  line 18: unnamed unused input active-high
                  line 19: unnamed unused input active-high
                  line 20: unnamed unused input active-high
                  line 21: unnamed unused input active-high
                  line 22: unnamed unused input active-high
                  line 23: unnamed unused input active-high
                  line 24: unnamed unused input active-high
                  line 25: unnamed unused input active-high
                  line 26: unnamed unused input active-high
                  line 27: unnamed unused input active-high
                  line 28: unnamed unused input active-high
                  line 29: unnamed unused input active-high
                  line 30: unnamed unused input active-high
                  line 31: unnamed unused input active-high
                  line 32: unnamed unused input active-high
                  line 33: unnamed unused input active-high
                  line 34: unnamed unused input active-high
                  line 35: unnamed unused input active-high
                  line 36: unnamed unused input active-high
                  line 37: unnamed unused input active-high
                  line 38: unnamed unused input active-high
                  line 39: unnamed unused input active-high
                  line 40: unnamed unused input active-high
                  line 41: unnamed unused input active-high
                  line 42: unnamed unused input active-high
                  line 43: unnamed unused input active-high
                  line 44: unnamed unused input active-high
                  line 45: unnamed unused input active-high
                  line 46: unnamed unused input active-high
                  line 47: unnamed unused input active-high
                  line 48: unnamed unused input active-high
                  line 49: unnamed unused input active-high
                  line 50: unnamed unused input active-high
                  line 51: unnamed unused input active-high
                  line 52: unnamed "interrupt" input active-high [used]
                  line 53: unnamed unused input active-high
                  line 54: unnamed unused input active-high
                  line 55: unnamed unused input active-high
                  line 56: unnamed unused input active-high
                  line 57: unnamed unused input active-high
                  line 58: unnamed unused input active-high
                  line 59: unnamed unused input active-high
                  line 60: unnamed unused input active-high
                  line 61: unnamed unused input active-high
                  line 62: unnamed unused input active-high
                  line 63: unnamed unused input active-high
                  line 64: unnamed unused input active-high
                  line 65: unnamed unused input active-high
                  line 66: unnamed unused input active-high
                  line 67: unnamed unused input active-high
                  line 68: unnamed unused input active-high
                  line 69: unnamed unused input active-high
                  line 70: unnamed unused input active-high
                  line 71: unnamed unused input active-high
                  line 72: unnamed unused input active-high
                  line 73: unnamed unused input active-high
                  line 74: unnamed unused input active-high
                  line 75: unnamed unused input active-high
                  line 76: unnamed unused input active-high
                  line 77: unnamed unused input active-high
                  line 78: unnamed unused input active-high
                  line 79: unnamed "usb0_id_det" input active-high [used]
                  line 80: unnamed unused input active-high
                  line 81: unnamed unused input active-high
                  line 82: unnamed unused input active-high
                  line 83: unnamed unused input active-high
                  line 84: unnamed unused input active-high
                  line 85: unnamed unused input active-high
                  line 86: unnamed unused input active-high
                  line 87: unnamed unused input active-high
                  line 88: unnamed unused input active-high
                  line 89: unnamed unused input active-high
                  line 90: unnamed unused input active-high
                  line 91: unnamed unused input active-high
                  line 92: unnamed unused input active-high
                  line 93: unnamed unused input active-high
                  line 94: unnamed unused input active-high
                  line 95: unnamed unused input active-high
                  line 96: unnamed unused input active-high
                  line 97: unnamed unused input active-high
                  line 98: unnamed unused input active-high
                  line 99: unnamed unused input active-high
                  line 100: unnamed unused input active-high
                  line 101: unnamed unused input active-high
                  line 102: unnamed "gmac-3v3" output active-high [used]
                  line 103: unnamed unused input active-high
                  line 104: unnamed unused input active-high
                  line 105: unnamed unused input active-high
                  line 106: unnamed unused input active-high
                  line 107: unnamed unused input active-high
                  line 108: unnamed unused input active-high
                  line 109: unnamed unused input active-high
                  line 110: unnamed "PHY reset" output active-low [used]
                  line 111: unnamed unused input active-high
                  line 112: unnamed unused input active-high
                  line 113: unnamed unused input active-high
                  line 114: unnamed unused input active-high
                  line 115: unnamed unused input active-high
                  line 116: unnamed unused input active-high
                  line 117: unnamed unused input active-high
                  line 118: unnamed unused input active-high
                  line 119: unnamed unused input active-high
                  line 120: unnamed unused input active-high
                  line 121: unnamed unused input active-high
                  line 122: unnamed unused input active-high
                  line 123: unnamed unused input active-high
                  line 124: unnamed unused input active-high
                  line 125: unnamed unused input active-high
                  line 126: unnamed unused input active-high
                  line 127: unnamed unused input active-high
                  line 128: unnamed unused input active-high
                  line 129: unnamed unused input active-high
                  line 130: unnamed unused input active-high
                  line 131: unnamed unused input active-high
                  line 132: unnamed unused input active-high
                  line 133: unnamed unused input active-high
                  line 134: unnamed unused input active-high
                  line 135: unnamed unused input active-high
                  line 136: unnamed unused input active-high
                  line 137: unnamed unused input active-high
                  line 138: unnamed unused input active-high
                  line 139: unnamed unused input active-high
                  line 140: unnamed unused input active-high
                  line 141: unnamed unused input active-high
                  line 142: unnamed unused input active-high
                  line 143: unnamed unused input active-high
                  line 144: unnamed unused input active-high
                  line 145: unnamed unused input active-high
                  line 146: unnamed unused input active-high
                  line 147: unnamed unused input active-high
                  line 148: unnamed unused input active-high
                  line 149: unnamed unused input active-high
                  line 150: unnamed unused input active-high
                  line 151: unnamed unused input active-high
                  line 152: unnamed unused input active-high
                  line 153: unnamed unused input active-high
                  line 154: unnamed unused input active-high
                  line 155: unnamed unused input active-high
                  line 156: unnamed unused input active-high
                  line 157: unnamed unused input active-high
                  line 158: unnamed unused input active-high
                  line 159: unnamed unused input active-high
                  line 160: unnamed unused input active-high
                  line 161: unnamed unused input active-high
                  line 162: unnamed unused input active-high
                  line 163: unnamed unused input active-high
                  line 164: unnamed unused input active-high
                  line 165: unnamed unused input active-high
                  line 166: unnamed "cd" input active-low [used]
                  line 167: unnamed unused input active-high
                  line 168: unnamed unused input active-high
                  line 169: unnamed unused input active-high
                  line 170: unnamed unused input active-high
                  line 171: unnamed unused input active-high
                  line 172: unnamed unused input active-high
                  line 173: unnamed unused input active-high
                  line 174: unnamed unused input active-high
                  line 175: unnamed unused input active-high
                  line 176: unnamed unused input active-high
                  line 177: unnamed unused input active-high
                  line 178: unnamed unused input active-high
                  line 179: unnamed unused input active-high
                  line 180: unnamed unused input active-high
                  line 181: unnamed unused input active-high
                  line 182: unnamed unused input active-high
                  line 183: unnamed unused input active-high
                  line 184: unnamed unused input active-high
                  line 185: unnamed unused input active-high
                  line 186: unnamed unused input active-high
                  line 187: unnamed unused input active-high
                  line 188: unnamed unused input active-high
                  line 189: unnamed unused input active-high
                  line 190: unnamed unused input active-high
                  line 191: unnamed unused input active-high
                  line 192: unnamed unused input active-high
                  line 193: unnamed unused input active-high
                  line 194: unnamed unused input active-high
                  line 195: unnamed unused input active-high
                  line 196: unnamed unused input active-high
                  line 197: unnamed unused input active-high
                  line 198: unnamed unused input active-high
                  line 199: unnamed unused input active-high
                  line 200: unnamed unused input active-high
                  line 201: unnamed unused input active-high
                  line 202: unnamed unused input active-high
                  line 203: unnamed unused input active-high
                  line 204: unnamed unused input active-high
                  line 205: unnamed unused input active-high
                  line 206: unnamed unused input active-high
                  line 207: unnamed unused input active-high
                  line 208: unnamed unused input active-high
                  line 209: unnamed unused input active-high
                  line 210: unnamed unused input active-high
                  line 211: unnamed unused input active-high
                  line 212: unnamed unused input active-high
                  line 213: unnamed unused input active-high
                  line 214: unnamed unused input active-high
                  line 215: unnamed unused input active-high
                  line 216: unnamed unused input active-high
                  line 217: unnamed unused input active-high
                  line 218: unnamed unused input active-high
                  line 219: unnamed unused input active-high
                  line 220: unnamed unused input active-high
                  line 221: unnamed unused input active-high
                  line 222: unnamed unused input active-high
                  line 223: unnamed unused input active-high
                  line 224: unnamed unused input active-high
                  line 225: unnamed unused input active-high
                  line 226: unnamed "ddc-en" output active-high [used]
                  line 227: unnamed unused input active-high
                  line 228: unnamed unused input active-high
                  line 229: unnamed unused input active-high
                  line 230: unnamed unused input active-high
                  line 231: unnamed "vcc33-wifi" output active-high [used]
                  line 232: unnamed unused input active-high
                  line 233: unnamed unused input active-high
                  line 234: unnamed unused input active-high
                  line 235: unnamed unused input active-high
                  line 236: unnamed unused input active-high
                  line 237: unnamed unused input active-high
                  line 238: unnamed unused input active-high
                  line 239: unnamed unused input active-high
                  line 240: unnamed unused input active-high
                  line 241: unnamed unused input active-high
                  line 242: unnamed unused input active-high
                  line 243: unnamed unused input active-high
                  line 244: unnamed unused input active-high
                  line 245: unnamed unused input active-high
                  line 246: unnamed unused input active-high
                  line 247: unnamed unused input active-high
                  line 248: unnamed unused input active-high
                  line 249: unnamed unused input active-high
                  line 250: unnamed unused input active-high
                  line 251: unnamed unused input active-high
                  line 252: unnamed unused input active-high
                  line 253: unnamed unused input active-high
                  line 254: unnamed unused input active-high
                  line 255: unnamed unused input active-high

                  Falcounetundefined 1 Reply Last reply Reply Quote 0
                  • Dakotaundefined
                    Dakota @chrishamm
                    last edited by Dakota

                    @chrishamm I was able to edit through the directories, however now I get an error saying access denied to /unexport. But after rebooting it returned to error code 19 and unable to connect.

                    Screenshot 2023-04-10 at 10.21.39 AM.png

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                    • Dakotaundefined
                      Dakota @Falcounet
                      last edited by

                      @Falcounet well wait now I'm confused... when I look at the directory it lists chip0 and chip352... gpio info still lists chip0 and chip1.

                      Screenshot 2023-04-10 at 10.41.28 AM.png

                      Falcounetundefined 1 Reply Last reply Reply Quote 1
                      • Falcounetundefined
                        Falcounet @Dakota
                        last edited by Falcounet

                        @Dakota Look at chrisamm comment above about sysfs / gpiod
                        You can't use sysfs with DSF.

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                        • Falcounetundefined
                          Falcounet @Dakota
                          last edited by Falcounet

                          @Dakota What I did a while ago when I was faced the same issue is :

                          1. To feed 3.3V (or whatever voltage is safe for your GPIO pin to set it to TRUE state) on the pin number 22 on the connector
                          2. Run gpioget in a loop to all the pins and store the ones that reports 1
                          3. Connect the pin number 22 to GND
                          4. Run gpioget in a loop to all the pins again and store the ones that reports 0
                          5. Make an intersection on the results from #2 and 3#

                          If you are lucky, you get only one result but if not, it should reduce the number of potential candidates pins.

                          However, be careful because there is some pins driven by the system so they can get a random state when you poll them.

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