Add BeagleBone Blue pin mapping

[roblamoreaux]

It would be really nice if the BeagleBone Blue pin names could be used like the PocketBeagle Pin names. I can't use the equivalent BBBlack or GPIOx_x pins and get it to work.

[fivdi]

@roblamoreaux Which features of the BeagleBone Blue would you like to use with BeagleBone-IO / Johnny-Five?

I don't have a BeagleBone Blue to test with so could you post the output of the following command please?

ls -l /sys/devices/platform/ocp

[roblamoreaux]

I'd love to be able to use the servos, the motor control and the encoder input. eventually I'd like to get Node-Red working so I can use it to help my kids learn to program the various robot bits I have around the house, but I am finding the support for the Blue disappointing.

Anyway here is the directory listing:

debian@beaglebone:~$ ls -l /sys/devices/platform/ocp total 0 drwxr-xr-x 3 root root 0 Jan 1 2000 40300000.ocmcram drwxrwxr-x 5 root gpio 0 Jan 1 2000 44e07000.gpio drwxr-xr-x 4 root root 0 Jan 1 2000 44e09000.serial drwxr-xr-x 4 root root 0 Jan 1 2000 44e0b000.i2c drwxr-xr-x 4 root root 0 Jan 1 2000 44e0d000.tscadc drwxr-xr-x 5 root root 0 Jan 1 2000 44e35000.wdt drwxr-xr-x 4 root root 0 Jan 1 2000 44e3e000.rtc drwxr-xr-x 9 root root 0 Jan 1 2000 47400000.usb drwxr-xr-x 4 root root 0 Jan 1 2000 47810000.mmc drwxr-xr-x 4 root root 0 Jan 1 2000 48022000.serial drwxr-xr-x 4 root root 0 Jan 1 2000 48024000.serial drwxr-xr-x 4 root root 0 Jan 1 2000 4802a000.i2c drwxr-xr-x 3 root root 0 Jan 1 2000 48042000.timer drwxr-xr-x 3 root root 0 Jan 1 2000 48044000.timer drwxr-xr-x 3 root root 0 Jan 1 2000 48046000.timer drwxr-xr-x 3 root root 0 Jan 1 2000 48048000.timer drwxr-xr-x 3 root root 0 Jan 1 2000 4804a000.timer drwxrwxr-x 5 root gpio 0 Jan 1 2000 4804c000.gpio drwxr-xr-x 4 root root 0 Jan 1 2000 48060000.mmc drwxr-xr-x 4 root root 0 Jan 1 2000 480c8000.mailbox drwxr-xr-x 3 root root 0 Jan 1 2000 480ca000.spinlock drwxr-xr-x 4 root root 0 Jan 1 2000 4819c000.i2c drwxr-xr-x 3 root root 0 Jan 1 2000 481a0000.spi drwxr-xr-x 4 root root 0 Jan 1 2000 481a6000.serial drwxr-xr-x 4 root root 0 Jan 1 2000 481a8000.serial drwxr-xr-x 4 root root 0 Jan 1 2000 481aa000.serial drwxrwxr-x 5 root gpio 0 Jan 1 2000 481ac000.gpio drwxrwxr-x 5 root gpio 0 Jan 1 2000 481ae000.gpio drwxr-xr-x 4 root root 0 Jan 1 2000 481d0000.can drwxr-xr-x 4 root root 0 Jan 1 2000 481d8000.mmc drwxr-xr-x 5 root root 0 Jan 1 2000 48300000.epwmss drwxr-xr-x 5 root root 0 Jan 1 2000 48302000.epwmss drwxr-xr-x 5 root root 0 Jan 1 2000 48304000.epwmss drwxr-xr-x 3 root root 0 Jan 1 2000 48310000.rng drwxr-xr-x 4 root root 0 Jan 1 2000 49000000.edma drwxr-xr-x 3 root root 0 Jan 1 2000 49800000.tptc drwxr-xr-x 3 root root 0 Jan 1 2000 49900000.tptc drwxr-xr-x 3 root root 0 Jan 1 2000 49a00000.tptc drwxr-xr-x 4 root root 0 Jan 1 2000 4a326000.pruss-soc-bus drwxr-xr-x 3 root root 0 Jan 1 2000 4c000000.emif drwxr-xr-x 3 root root 0 Jan 1 2000 53100000.sham drwxr-xr-x 3 root root 0 Jan 1 2000 53500000.aes -rw-r--r-- 1 root root 4096 Jan 20 23:49 driver_override -r--r--r-- 1 root root 4096 Jan 20 23:49 modalias drwxr-xr-x 3 root root 0 Jan 1 2000 ocp:C18_pinmux drwxr-xr-x 3 root root 0 Jan 1 2000 ocp:D13_pinmux drwxr-xr-x 3 root root 0 Jan 1 2000 ocp:H17_pinmux drwxr-xr-x 3 root root 0 Jan 1 2000 ocp:H18_pinmux drwxr-xr-x 3 root root 0 Jan 1 2000 ocp:helper drwxr-xr-x 3 root root 0 Jan 1 2000 ocp:J15_pinmux drwxr-xr-x 6 root root 0 Jan 1 2000 ocp:l4_wkup@44c00000 drwxrwxr-x 3 root gpio 0 Jan 1 2000 ocp:P8_15_pinmux drwxrwxr-x 3 root gpio 0 Jan 1 2000 ocp:P9_11_pinmux drwxrwxr-x 3 root gpio 0 Jan 1 2000 ocp:P9_21_pinmux drwxrwxr-x 3 root gpio 0 Jan 1 2000 ocp:P9_22_pinmux drwxrwxr-x 3 root gpio 0 Jan 1 2000 ocp:P9_23_pinmux drwxrwxr-x 3 root gpio 0 Jan 1 2000 ocp:P9_24_pinmux drwxrwxr-x 3 root gpio 0 Jan 1 2000 ocp:P9_26_pinmux drwxrwxr-x 3 root gpio 0 Jan 1 2000 ocp:P9_28_pinmux drwxrwxr-x 3 root gpio 0 Jan 1 2000 ocp:P9_29_pinmux drwxrwxr-x 3 root gpio 0 Jan 1 2000 ocp:P9_30_pinmux drwxrwxr-x 3 root gpio 0 Jan 1 2000 ocp:P9_31_pinmux drwxr-xr-x 3 root root 0 Jan 1 2000 ocp:U16_pinmux lrwxrwxrwx 1 root root 0 Jan 20 23:49 of_node -> ../../../firmware/devicetree/base/ocp drwxr-xr-x 2 root root 0 Jan 20 23:49 power lrwxrwxrwx 1 root root 0 Jan 1 2000 subsystem -> ../../../bus/platform -rw-r--r-- 1 root root 4096 Jan 1 2000 uevent

[joehuewe]

Any new developments on beagle bone blue support?

[fivdi]

Sorry, nothing new to report here. I don't think support for the BeagleBone Blue will be added any time in the near future.

[TheGreatJK]

Still no plans for BeagleBone Blue support? I just got one, and am really struggling to find a good way to make use of it's features from JavaScript.

[RobertCNelson]

So out of the gate with the Blue, things got pushed to make it BBB + Blue extra.. Looking back, we should have just did a clean break like the PocketBeagle..

Here are my notes on one possible way...

https://github.com/beagleboard/bb.org-overlays/blob/master/tools/pinmux-generator/BeagleBone_Blue.dts

https://github.com/beagleboard/bb.org-overlays/blob/master/tools/pinmux-generator/BeagleBone_Blue_config-pin.txt

While it would make things easier, it would break libroboticape, thus i never pushed it..

So for this library, Blue = BBB + a few extra pins..

https://github.com/RobertCNelson/dtb-rebuilder/blob/4.4-ti/src/arm/am335x-boneblue.dts#L62-L188

Regards,

[TheGreatJK]

Thanks for the links!

This would be a good time to admit I'm a mechanical engineering student with a side hobby, quite a beginner in this field. How exactly would I implement such a library?

I agree that it would be a pity to entirely circumvent libroboticape, so I was hoping to use something more like this:

https://github.com/jadonk/node-roboticscape

Unfortunately, they don't support the servo or gpio outputs yet, and those are exactly what I want to use. I built a web remote control application (browser based with joystick support) on my old BeagleBone Black (entirely within JavaScript) and was hoping to switch everything to this board for the convenient on-board wifi and hardware interfaces.