Add documentation on setting up direct ethernet connection

src/SUMMARY.md

@@ -25,6 +25,7 @@
   - [Pattern Library](./software/pattern_library.md)
   - [Compilation](./software/compilation.md)
   - [Packaging](./software/packaging.md)
+  - [Direct Ethernet Setup](./software/direct-ethernet-setup.md)
   - [Configuration](./software/configuration.md)
 - [Contributor's Guide](./contributors_guide.md)
 - [Licensing](./licensing.md)

src/software/direct-ethernet-setup.md

@@ -0,0 +1,57 @@
+This file contains documentation for two different ways of working with peach cloud 
+using a direct ethernet connection (useful for developmetn purposes)
+
+Method 1:
+If you are close to a router, you can plug your pi into the router via ethernet, 
+and you should be able to ssh into the pi from any laptop connected to the same router
+via wifi or ethernet.
+
+Method 2:
+Using a DHCP server on your laptop (instructions for a laptop running Debian). 
+
+On your laptop, install isc-dhcp-server
+`sudo apt-get install isc-dhcp-server`
+
+Add the following configs:
+
+In `/etc/dhcp/dhcpd.conf`, 
+add the following section:
+```
+subnet 10.0.2.0 netmask 255.255.255.240 {
+   range 10.0.2.2 10.0.2.14;
+   option routers 10.0.2.1;
+   host peach {
+      hardware ethernet b8:27:eb:b1:b1:4e;
+      fixed-address     10.0.2.4;
+   }
+}
+```
+
+In `/etc/default/isc-dhcp-server`,
+add the following section with the name of your ethernet interface (in this case ens9),
+```
+INTERFACESv4="ens9"
+INTERFACESv6=""
+```
+
+In `/etc/network/interfaces`,
+set a static IP for you ethernet interface,
+by adding this section:
+
+```
+auto ens9
+iface ens9 inet static
+  address 10.0.2.1
+```
+
+Then start the dhcp server:
+```sudo systemctl start isc-dhcp-server```
+
+Connect your pi to the laptop via an ethernet cable, and you should be able to ssh into the pi via
+```ssh peach@10.0.2.4```
+
+On the pi, internet traffic will still need to go through wlan0 interface.
+
+
+On Mac OS, you don't need to change the network config on your laptop, 
+if you simply enable internet sharing over ethernet, you should be able to connect to the pi.