Setting Up A Beaglebone With Rust

Basic beaglebone information

$ uname -a
Linux beaglebone 4.4.9-ti-r25 #1 SMP Thu May 5 23:08:13 UTC 2016 armv7l GNU/Linux

Using debian Jessie

Setting up wifi

First step was to setup wifi on the Beaglebone Green. First I looked in /etc/network/interfaces which told me to use connmanctl. The [arch wiki][https://wiki.archlinux.org/index.php/Connman] had some good instructions which I used:

root@beaglebone:~# connmanctl
Error getting VPN connections: The name net.connman.vpn was not provided by any .service filesconnmanctl>connmanctl> scan wifi
Scan completed for wifi
connmanctl> services
*AO tesla                wifi_2cf7f106045e_7465736c61_managed_psk
                         wifi_2cf7f106045e_hidden_managed_psk
    xfinitywifi          wifi_2cf7f106045e_7866696e69747977696669_managed_none
    Amanda and Jon       wifi_2cf7f106045e_416d616e646120616e64204a6f6e_managed_psk
    ARRIS-B762           wifi_2cf7f106045e_41525249532d42373632_managed_psk
    ARRIS-B48A           wifi_2cf7f106045e_41525249532d42343841_managed_psk
    ARRIS-2C02           wifi_2cf7f106045e_41525249532d32433032_managed_psk
    XXFSETUP-A984        wifi_2cf7f106045e_58584653455455502d41393834_managed_psk
    Pignet               wifi_2cf7f106045e_5069676e6574_managed_psk
    franstein            wifi_2cf7f106045e_6672616e737465696e_managed_psk
    Persephone           wifi_2cf7f106045e_506572736570686f6e65_managed_psk
    WENDY                wifi_2cf7f106045e_57454e4459_managed_psk
connmanctl> agent on
Agent registered
connmanctl> connect wifi_2cf7f106045e_7465736c61_managed_psk
Passphrase?

Getting Rust Running on BeagleBone Black

Attempt number 1: rustup

We will use rustup which is a rust toolchain installer similar to rvm or virtualenv. On one hand I could do development locally and then deploy, I would rather have a local toolchain on the beaglebone as well for tinkering. In the long run I might prefer to push cross compiled binaries.

First lets upgrade:

$ sudo apt update
$ sudo apt upgrade

$ curl -sSf https://static.rust-lang.org/rustup.sh | sh

I get an error when building package... Seems to be a gcc-4 vs gcc-6 error... Updated all things to stretch... May be a terrible idea.

Partially following: https://strongrandom.com/spi-on-a-beaglebone-black-for-led-domination.html

Attempt number 2: Cross compiling

Install the arm-unknown-linux-gnueabihf target. On Fedora 25 we can find this in copr:

sudo dnf copr enable lantw44/arm-linux-gnueabihf-toolchain
sudo dnf install arm-linux-gnueabihf-gcc

Using rustup we can download and install the arm-unknown-linux-gnueabihf target

$rustup target add arm-unknown-linux-gnueabihf

Next we need to add the followign lines to our ~/.cargo/config file:

[target.arm-unknown-linux-gnueabihf]
linker = "arm-linux-gnueabihf-gcc"

Now finally you can:

$ cargo new --bin test-on-arm
$ cd test-on-arm
$ cargo build --target arm-unknown-linux-gnueabihf
$ scp target/arm-unknown-linux-gnueabihf/debug/test-on-arm root@beaglebone.local:~
Debian GNU/Linux 8

BeagleBoard.org Debian Image 2016-05-27

Support/FAQ: http://elinux.org/Beagleboard:BeagleBoneBlack_Debian

default username:password is [debian:temppwd]

test-on-arm                                                            100% 1578KB   3.4MB/s   00:00
$ ssh root@beaglebone.local ./test-on-arm
Debian GNU/Linux 8

BeagleBoard.org Debian Image 2016-05-27

Support/FAQ: http://elinux.org/Beagleboard:BeagleBoneBlack_Debian

default username:password is [debian:temppwd]

Hello, world!

Thanks to: https://github.com/andygrove/rust-bbb-experiments https://fedorahosted.org/copr/wiki/HowToEnableRepo