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+NanoVNA - Low budget tiny handheld Vector Network Analyzer
+==========================================================
+
+# About
+
+NanoVNA is very tiny handheld Vector Network Analyzer, works as
+standalone, portable with battery, own lcd display. This project aim
+to provide useful measuring tool for RF enthusiast.
+
+This repository contains source of NanoVNA firmware.
+
+
+## Prepare ARM Cross Tools
+
+Install cross tools and dfu-util.
+
+    $ brew tap PX4/px4
+    $ brew install gcc-arm-none-eabi
+    $ brew instal dfu-util
+
+Otherwise, using toolchains inside LPCxpresso. Like this.
+
+    $ PATH=$PATH:/Applications/lpcxpresso_7.8.0_426/lpcxpresso/tools/bin
+
+## Building firmware
+
+Fetch ChibiOS submodule into tree.
+
+    $ cd nanovna
+    $ git submodule update --init --recursive
+
+Enter firmware directory and make it.
+
+    $ make
+
+## Burn it
+
+Boot MCU in DFU mode. To do this, jumper BOOT0 pin at powering on.
+And then, burn firmware using dfu-util via USB.
+
+    $ dfu-util -d 0483:df11 -a 0 -s 0x08000000:leave -D build/ch.bin
+
+
+# Control NanoVNA from Host PC
+
+NanoVNA is able to work standalone, but also be controlled from host
+PC. Directory python contains sample script to control NanoVNA.
+
+
+[EOF]