Getting Started on OSX

Getting started with the NodeMCU devkit on OSX (for version 1.0):

You will need to install the SiLabs serial driver for the chip (direct link)
To connect to it, first install CoolTerm
- pick Options, then select the /dev/cu.SLAB_USBtoUART connection that those drivers created.
- 9600 baud worksforme
If on connection, the device says "Please run file.remove("user.lua") before first use." in a loop, enter the commands:
```
file.remove("user.lua")
node.restart()
```
CoolTerm is good for direct simple communication, but for working with the device you want ESPlorer and its associated eBook by Rui Santos.
To flash the firmware you need special flags.
- Get the appropriate NodeMCU firmware
- Install esptool:
```
git clone https://github.com/themadinventor/esptool.git 
cd esptool
sudo python ./setup.py install
```
- Hold down the "FLASH" button on the device and hit the "RST" button while doing so.
- Substituting in the correct path to the firmware file you downloaded, run
```
python ./esptool.py --port=/dev/cu.SLAB_USBtoUART  write_flash  -fm=dio -fs=32m 0x00000 ../nodemcu-master-8-modules-2015-09-01-02-42-13-float.bin
```
- Unplug the device and replug it.
- Connect for great justice

Happy Hacking!

Thanks to François Guillier for figuring most of this out!

Please note: If you have the older NodeMCU dev kit version (blue silkscreen, says Devkit 0.9 on the silkscreen) try these steps:

You'll need the WCH serial driver: http://www.wch.cn/download/CH341SER_MAC_ZIP.html
My module did not have a reset button wired. The simplest way to flash the ESP8266 for me was to:
- Make note of the serial port. Look out of something like: /dev/cu.wchusbserial...
- Unplug the NodeMCU dev kit first.
- Press the FLASH button and keep it pressed.
- Replug the NodeMCU dev kit,
- Wait a bit and then release the FLASH button.
- Start the flashing process with executing the terminal commands from above.

To figure out the serial port, type in the Terminal: ls /dev/cu.*

原文地址：https://github.com/nodemcu/nodemcu-devkit/wiki/Getting-Started-on-OSX

另外一篇觉得写的还蛮好的文章： http://www.jianshu.com/p/f8f97d0602ec

mac下安装烧录esp8266