zmhulu / esp8266-arm-swd

Proof-of-concept ESP8266 web server and ARM Serial Wire Debug client

esp8266-arm-swd

Proof-of-concept ESP8266 web server and ARM Serial Wire Debug client!

This directory is an Arduino sketch.

The Serial Wire Debug client here is a slightly adapted version of the one I originally wrote for Fadecandy's factory test infrastructure. It has optional extensions for the Freescale Kinetis microcontrollers, but the lower-level SWD interface should be compatible with any ARM microcontroller.

Installing

Software you'll need:

• The latest Arduino IDE
• Install the ESP8266 Arduino core
• And the filesystem plugin

Now open esp8266-arm-swd.ino in the IDE:

1. In the Tools menu, select your ESP8266 board and serial port info
2. In the sketch, put your Wifi network info in the YOUR-WIFI-CONFIG tab
3. Sketch -> Upload
4. Tools -> ESP8266 Sketch Data Upload

Okay, now your Internet Thing is ready!

Usage

Default URL: http://esp8266-swd.local/

• Visit the web page, edit all the hexes
• Use the HTML5 components to make your own tools
• Send pull requests

Hookups:

Signal	SWD Port	SWD over JTAG	ESP8266 pin	Equiv. NodeMCU pin
3.3v Power	Pin 1
Data In/Out	Pin 2	TMS	GPIO2	D4
Ground	Pin 3
Clock	Pin 4	TCLK	GPIO0	D3

Development Proxy

It's slow to update the filesystem, so for development work it's convenient to use a proxy to merge your local static files with the sketch's live API.

A simple tool using Node is included:

npm install
node webdev-proxy.js