Currently written to support a D1 mini.

Setup

Before compiling:

• Create a certificate for the IoT device.
• Download the certificate and private key.
• Grab the Amazon Root CA 1 from here.
• Go to IoT Core Settings and copy the "Custom endpoint".
• Run the following:

echo \#define AWS_IOT_ADDRESS \"<IOT CUSTOM ENDPOINT>\" > config.h
xxd -i <CA FILE> >> config.h
xxd -i <CERT FILE> >> config.h
xxd -i <KEY FILE> >> config.h

• Copy config.h to src/