添加智能灯固件代码

firmware/esp-idf/wumei-smart-firmware/examples/protocols/sockets/tcp_client/README.md

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+
+# TCP Client example
+
+(See the README.md file in the upper level 'examples' directory for more information about examples.)
+
+The application creates a TCP socket and tries to connect to the server with predefined IP address and port number. When a connection is successfully established, the application sends message and waits for the answer. After the server's reply, application prints received reply as ASCII text, waits for 2 seconds and sends another message.
+
+## How to use example
+
+In order to create TCP server that communicates with TCP Client example, choose one of the following options.
+
+There are many host-side tools which can be used to interact with the UDP/TCP server/client. 
+One command line tool is [netcat](http://netcat.sourceforge.net) which can send and receive many kinds of packets. 
+Note: please replace `192.168.0.167 3333` with desired IPV4/IPV6 address (displayed in monitor console) and port number in the following command.
+
+In addition to those tools, simple Python scripts can be found under sockets/scripts directory. Every script is designed to interact with one of the examples.
+
+### TCP server using netcat
+```
+nc -l 192.168.0.167 3333
+```
+
+### Python scripts
+Script example_test.py could be used as a counter part to the tcp-client project, ip protocol name (IPv4 or IPv6) shall be stated as argument. Example:
+
+```
+python example_test.py IPv4
+```
+Note that this script is used in automated tests, as well, so the IDF test framework packages need to be imported;
+please add `$IDF_PATH/tools/ci/python_packages` to `PYTHONPATH`.
+
+## Hardware Required
+
+This example can be run on any commonly available ESP32 development board.
+
+## Configure the project
+
+```
+idf.py menuconfig
+```
+
+Set following parameters under Example Configuration Options:
+
+* Set `IP version` of example to be IPV4 or IPV6.
+
+* Set `IPV4 Address` in case your chose IP version IPV4 above.
+
+* Set `IPV6 Address` in case your chose IP version IPV6 above.
+
+* Set `Port` number that represents remote port the example will connect to.
+
+Configure Wi-Fi or Ethernet under "Example Connection Configuration" menu. See "Establishing Wi-Fi or Ethernet Connection" section in [examples/protocols/README.md](../../README.md) for more details.
+
+## Build and Flash
+
+Build the project and flash it to the board, then run monitor tool to view serial output:
+
+```
+idf.py -p PORT flash monitor
+```
+
+(To exit the serial monitor, type ``Ctrl-]``.)
+
+See the Getting Started Guide for full steps to configure and use ESP-IDF to build projects.
+
+
+## Troubleshooting
+
+Start server first, to receive data sent from the client (application).