## General Usage

### Prerequisites

You must have avr-gcc and avrdude installed. To install both
tools on a debian-based system, please run the following
command:

    apt install avr-gcc avrdude

The names for these dependencies may differ for other package
managers and distributions. Please check the package sources
on your system for more information.

### Build and Flash

Run this next command in the project root directory to
build and flash the project using an USBasp programmer:

    make all

See the Makefile for different settings for your specific
build environment. To remove all build related auxiliary
files you may run these commands:

    make clean
    make distclean

You can listen on the serial debug interface using the
command below (if you have initialized the optional
submodules as described in the next section):

    make listen

### Temperature and Dewpoint Targets

You can use the script below to send serial commands (you
may need to run `git submodule update --init` if the tools
directory is empty):

    ./opt/tools/serial-send.py <command> <args, ...>

Issue the SET command to update the target settings:

    set <temperature> <dewpoint>

Settings are stored in EEPROM and are persistent until a new
SET command is issued. Keywords are not case-sensitive. Both
arguments may contain a decimal point followed by a sequence
of digits.