Merge branch 'cross_deb' into 'master'

cross compile debs

See merge request !4

.cargo/config

+[target.arm-unknown-linux-gnueabihf]
+linker = "arm-linux-gnueabihf-gcc"
+
+[target.arm-unknown-linux-musleabihf]
+linker = "arm-linux-gnueabihf-gcc"
+
+[target.aarch64-unknown-linux-gnu]
+linker = "aarch64-linux-gnu-gcc"

.gitlab-ci.yml

 image: "rust:latest"
 
+stages:
+  - test
+  - build
+
 before_script:
   - apt-get update
-  - apt-get install -y protobuf-compiler
+  - apt-get install -y protobuf-compiler gcc-arm-linux-gnueabihf gcc-aarch64-linux-gnu
   - rustup component add rustfmt
   - rustup component add clippy
   - cargo install cargo-deb
+  - rustup target add arm-unknown-linux-musleabihf
+  - rustup target add aarch64-unknown-linux-gnu
 
 test:
+  stage: test
   script:
     - cargo fmt -- --check
     - cargo clippy --all-targets --all-features -- -D warnings
     - cargo test
 build:
+  stage: build
   script:
     - cargo deb
   artifacts:
     paths:
-      - target/debian/*.deb
+      - target/debian/*.deb
\ No newline at end of file
+
+# pi zero, and pi one
+build_pi_old:
+  stage: build
+  script:
+    - cargo deb --target arm-unknown-linux-musleabihf
+  artifacts:
+    paths:
+      - target/arm-unknown-linux-musleabihf/debian/*.deb
+
+build_pi_modern:
+  stage: build
+  script:
+    - cargo deb --target aarch64-unknown-linux-gnu
+  artifacts:
+    paths:
+      - target/aarch64-unknown-linux-gnu/debian/*.deb
\ No newline at end of file

README.md

@@ -4,7 +4,33 @@ This is a CATS RX-only I-Gate which can use a cheap SDR receiver to decode CATS
 
 ## Debian & Derivatives (Ubuntu, Raspbian, etc.)
 
-### Building
+### Installing (Prebuilt Packages)
+
+First, install rtl-sdr: `sudo apt install rtl-sdr`
+
+Next, download the .deb file for your system:
+
+[x86\_64](https://gitlab.scd31.com/cats/sdr-igate/builds/artifacts/master/browse/target/debian?job=build)
+
+[Pi Zero/1](https://gitlab.scd31.com/cats/sdr-igate/builds/artifacts/master/browse/target/arm-unknown-linux-musleabihf/debian?job=build_pi_old)
+
+[Pi 2/3/4/5](https://gitlab.scd31.com/cats/sdr-igate/builds/artifacts/master/browse/target/aarch64-unknown-linux-gnu/debian/?job=build_pi_modern)
+
+Once downloaded, the package can be installed with `sudo dpkg -i FILENAME.deb`, where `FILENAME.deb` is the file you downloaded.
+
+The resulting deb package will placed in `target/debian/cats-sdr-igate_VERSION.deb`. The package can be installed with `sudo dpkg -i target/debian/cats-sdr-igate_VERSION.deb`, replacing `VERSION` with whatever version and architecture was built.
+
+### Configuring
+
+The configuration for the I-Gate lives in `/etc/cats-sdr-igate/config.toml`. Make sure to update this before using the utility - most importantly, the callsign must be configured. Optionally, you can remove the entire `[felinet]` section if you don't want to forward packets to the network.
+
+### Running
+
+Start the service with `sudo systemctl start cats-sdr-igate`. If you want it to start automatically at boot, you can run `sudo systemclt enable cats-sdr-igate`.
+
+### Building From Source
+
+You probably don't need to do this unless you're planning to change the code, or if you're having problems with the prebuilt binaries.
 
 To build the software, you will need to install [Rustup](https://rustup.rs/). You'll also need to install some dependencies:
 
@@ -22,19 +48,6 @@ git pull
 cargo deb
 ```
 
-The resulting deb package will placed in `target/debian/cats-sdr-igate_VERSION.deb`
-
-### Installing
-
-Once built, the package can be installed with `sudo dpkg -i target/debian/cats-sdr-igate_VERSION.deb`, replacing `VERSION` with whatever version and architecture was built.
-
-### Configuring
-
-The configuration for the I-Gate lives in `/etc/cats-sdr-igate/config.toml`. Make sure to update this before using the utility - most importantly, the callsign must be configured. Optionally, you can remove the entire `[felinet]` section if you don't want to forward packets to the network.
-
-### Running
-
-Start the service with `sudo systemctl start cats-sdr-igate`. If you want it to start automatically at boot, you can run `sudo systemclt enable cats-sdr-igate`.
 
 ## Other 
 
@@ -57,6 +70,6 @@ Copy the `config.example.toml` file to `config.toml`. You can either keep it in
 Make sure you have `rtl-sdr` installed. As a sanity check, verify the `rtl_fm` command exists.
 
 ```bash
-./start.sh
+cargo run --release
 ```