# VintageNetMobile
[](https://hex.pm/packages/vintage_net_mobile)
[](https://hexdocs.pm/vintage_net_mobile/VintageNetMobile.html)
[](https://circleci.com/gh/nerves-networking/vintage_net_mobile)
[](https://coveralls.io/github/nerves-networking/vintage_net_mobile?branch=master)
A `VintageNet` technology for using mobile connections.
```elixir
def deps do
[
{:vintage_net_mobile, "~> 0.1.1"}
]
end
```
To get this technology running with VintageNet run the following:
```elixir
VintageNet.configure(
"ppp0",
%{
type: VintageNetMobile,
modem: your_modem,
service_provider: your_service_provider
}
)
```
or add this to your `config.exs`:
```elixir
config :vintage_net,
config: [
{"ppp0", %{type: VintageNetMobile, modem: your_modem, service_provider: your_service_provider}}
]
```
Supported modems:
* `"Quectel BG96"`
* `"Quectel EC25-AF"`
Supported service providers:
* `"Twilio"`
* `"Twilio Super"`
## System requirements
These requirements are believed to be the minimum needed to be added to the
official Nerves systems.
### Linux kernel
Enable PPP and drivers for your modem:
```text
CONFIG_PPP=m
CONFIG_PPP_BSDCOMP=m
CONFIG_PPP_DEFLATE=m
CONFIG_PPP_FILTER=y
CONFIG_PPP_MPPE=m
CONFIG_PPP_MULTILINK=y
CONFIG_PPP_ASYNC=m
CONFIG_PPP_SYNC_TTY=m
CONFIG_USB_NET_CDC_NCM=m
CONFIG_USB_NET_HUAWEI_CDC_NCM=m
CONFIG_USB_NET_QMI_WWAN=m
CONFIG_USB_SERIAL_OPTION=m
```
### Buildroot (nerves_defconfig)
Both `pppd` and `usb_modeswitch` are needed in the `nerves_defconfig`:
```text
BR2_PACKAGE_USB_MODESWITCH=y
BR2_PACKAGE_PPPD=y
BR2_PACKAGE_PPPD_FILTER=y
```
### Busybox
Add the following to your `nerves_defconfig`:
```text
BR2_PACKAGE_BUSYBOX_CONFIG_FRAGMENT_FILES="${NERVES_DEFCONFIG_DIR}/busybox.fragment"
```
and then create `busybox.fragment` with the following:
```text
CONFIG_MKNOD=y
CONFIG_WC=y
```
## Custom Modems
`VintageNetMobile` allows you add custom modem implementations if the built-in
implementations don't work for you:
```elixir
config :vintage_net_mobile,
extra_modems: [MyBestLTEEverModem]
```
Modem implementations need to implement the `VintageNetMobile.Modem` behaviour.
This will allow your modem to tie into `VintageNetMobile` without having relying
on our supported providers. This is useful for highly custom chatscripts or
non-generic modem implementations.
## VintageNet Properties
In addition to the common `vintage_net` properties for all interface types, this technology reports the following:
| Property | Values | Description |
| ------------- | -------------- | ----------------------------- |
| `signal_rssi` | `0-31` or `99` | An integer between 0-31 or 99 |
## Serial AT command debugging
If you are running this on a nerves device and have
[elixircom](https://github.com/mattludwigs/elixircom) installed:
```elixir
iex> Elixircom.run("/dev/ttyUSB2", speed: 115200)
```
Will allow you to run AT commands. To test everything is okay:
```elixir
iex> Elixircom.run("/dev/ttyUSB2", speed: 115200)
# type at and press enter
OK
```
| Command | Description |
| --------- | ------------------------------------------------ |
| at+csq | Signal Strength |
| at+csq=? | Query supported signal strength format |
| at+cfun? | Level of functionality |
| at+cfun=? | Query supported functionality levels |
| at+creg? | Check if the modem has registered to a provider. |
| at+cgreg? | Same as above for some modems |
`VintageNetMobile` makes it easy to add cellular support to your device.
