Yeelink初步体验

环境

Qemu: 2.8.0

开发板：vexpress-ca9

 

概述

    前面的博文已经使我们的虚拟开发板具备了访问外网的目的，离物联网越来越近了。要玩物联网，Yeelink不得不说，它提供了云平台，可以将设备的数据上传到云端，也可以联网获得云端的数据，我们可以通过手机客户端或在网页端查看或修改，从而达到用手机客户端跟嵌入式设备通信的目的。

    下面我们实现一个非常简单的功能： 添加一个虚拟开关，通过Yeelink的手机客户端或在网页端可以查看和修改这个开端的状态，而我们的板子会每隔2s联网读取一次这个虚拟开关的状态，最后板子根据开关的状态打印不同的提示。

 

正文

一、首先登陆Yeelink官网，手动添加一个device，然后在该device下面再创建一个sensor用来代表虚拟开关。

二、为Python添加requests模块

Requests 是用Python语言编写，基于urllib，采用Apache2 Licensed开源协议的HTTP库。它比urllib更加方便，可以节约我们大量的工作，完全满足HTTP测试需求。

1、下载requests模块

下载地址： https://pypi.python.org/pypi/requests/2.3.0 或 requests-2.3.0.tar.gz

解压后：

$ls
HISTORY.rst  NOTICE      requests/           setup.cfg
LICENSE      PKG-INFO    requests.egg-info/  setup.py*
MANIFEST.in  README.rst  requirements.txt    test_requests.py*

其中的requests既可以用于Python2也可以用于Python3，然后将这个requests目录拷贝到对应Python的site-packages下面。

在导入requests模块的时候，会提示找不到zlib模块。

2、重新编译Python，支持zlib

下载zlib： http://www.zlib.net/zlib-1.2.11.tar.gz 或 zlib-1.2.11.tar.gz 

• 编译zlib：

 #!/bin/bash

 export CC=arm-none-linux-gnueabi-gcc

 ../zlib-1.2./configure \
     --prefix=`pwd`

修改Makefile，修改AR和RANLIB如下：

AR=arm-none-linux-gnueabi-ar
RANLIB=arm-none-linux-gnueabi-ranlib

然后执行make && make install， 安装完成之后不要忘了把lib下的so和include下的头文件拷贝到板子上。

• 编译Python3：

 #!/bin/bash

 ../Python-3.6./configure \
     --host=arm-none-linux-gnueabi \
     --build=armv7 \
     --prefix=`pwd` \
     --enable-ipv6 \
     --enable-shared \
     ac_cv_file__dev_ptmx="yes" \
     ac_cv_file__dev_ptc="no" \
     LDFLAGS="-L/home/pengdonglin/disk_ext/Third_Part/SQlite3/aarch32/lib \
     -L/home/pengdonglin/disk_ext/Third_Part/Readline/aarch32/lib \
     -L/home/pengdonglin/disk_ext/Third_Part/Termcap/aarch32/lib \
     -L/home/pengdonglin/disk_ext/Third_Part/Zlib/aarch32/lib"\
     CPPFLAGS="-I/home/pengdonglin/disk_ext/Third_Part/SQlite3/aarch32/include \
     -I/home/pengdonglin/disk_ext/Third_Part/Readline/aarch32/include \
     -I/home/pengdonglin/disk_ext/Third_Part/Termcap/aarch32/include \
     -I/home/pengdonglin/disk_ext/Third_Part/Zlib/aarch32/include"\
     LDLAST="-L/home/pengdonglin/disk_ext/Third_Part/Readline/aarch32/lib \
     -L/home/pengdonglin/disk_ext/Third_Part/Termcap/aarch32/lib \
     -L/home/pengdonglin/disk_ext/Third_Part/Zlib/aarch32/lib"

 make -j4
 make install

安装完成后，也可以直接将lib/python3.6/lib-dynload/zlib.cpython-36m-arm-linux-gnueabi.so拷贝到板子上面的/usr/lib/python3.6/lib-dynload/下面即可， 而不必全部更新

• 编译Python2：

mk1_conf.sh:

 #!/bin/bash

 ../Python-2.7./configure --prefix=`pwd` \
     --host=arm-none-linux-gnueabi \
     --build=x86_64-linux-gnu \
     --enable-ipv6 \
     --enable-shared \
     ac_cv_file__dev_ptmx="yes" \
     ac_cv_file__dev_ptc="no" \
     LDFLAGS="-L/home/pengdonglin/disk_ext/Third_Part/SQlite3/aarch32/lib \
     -L/home/pengdonglin/disk_ext/Third_Part/Readline/aarch32/lib \
     -L/home/pengdonglin/disk_ext/Third_Part/Termcap/aarch32/lib \
     -L/home/pengdonglin/disk_ext/Third_Part/Zlib/aarch32/lib"\
     CPPFLAGS="-I/home/pengdonglin/disk_ext/Third_Part/SQlite3/aarch32/include \
     -I/home/pengdonglin/disk_ext/Third_Part/Readline/aarch32/include \
     -I/home/pengdonglin/disk_ext/Third_Part/Termcap/aarch32/include \
     -I/home/pengdonglin/disk_ext/Third_Part/Zlib/aarch32/include"\
     LDLAST="-L/home/pengdonglin/disk_ext/Third_Part/Readline/aarch32/lib \
     -L/home/pengdonglin/disk_ext/Third_Part/Termcap/aarch32/lib \
     -L/home/pengdonglin/disk_ext/Third_Part/Zlib/aarch32/lib"\

mk2_make.sh:

 #!/bin/bash

 make HOSTPYTHON=../x86_64/python \
     HOSTPGEN=../x86_64/Parser/pgen \
     BLDSHARED="arm-none-linux-gnueabi-gcc -shared" \
     CROSS_COMPILE=arm-none-linux-gnueabi- \
     CROSS_COMPILE_TARGET=yes \
     HOSTARCH=arm-none-linux-gnueabi \
     BUILDARCH=x86_64-linux-gnu \
     -j4

mk3_install.sh:

 #!/bin/bash

 make install HOSTPYTHON=../x86_64/python \
     BLDSHARED="arm-none-linux-gnueabi-gcc -shared" \
     CROSS_COMPILE=arm-none-linux-gnueabi- \
     CROSS_COMPILE_TARGET=yes \
     prefix=`pwd`

安装完成后，也可以直接将lib/python2.7/lib-dynload/zlib.so拷贝到开发板的/usr/lib/python2.7/lib-dynload/下面，而不用全部更新

• 然后修改mk_ramdisk.sh:

 #!/bin/bash

 thiry_part=/home/pengdonglin/disk_ext/Third_Part/
 cross_compile=/home/pengdonglin/disk_ext/Cross_Compiler/aarch32/

 sudo rm -rf rootfs
 sudo rm -rf tmpfs
 sudo rm -rf ramdisk*
 sudo losetup -d /dev/loop0
 sudo losetup /dev/loop0 ./fs_vexpress_1G.img
 sudo partprobe /dev/loop0

 sudo mkdir rootfs
 sudo cp ${thiry_part}/Busybox/aarch32/_install/*  rootfs/ -raf

 sudo mkdir -p rootfs/proc/
 sudo mkdir -p rootfs/sys/
 sudo mkdir -p rootfs/tmp/
 sudo mkdir -p rootfs/root/
 sudo mkdir -p rootfs/var/
 sudo mkdir -p rootfs/mnt/

 sudo cp etc rootfs/ -arf

 sudo cp -arf ${cross_compile}/arm-2014.05/arm-none-linux-gnueabi/libc/lib rootfs/

 #Python3
 sudo mkdir -p rootfs/usr
 pushd rootfs/usr
 sudo cp  -raf /home/pengdonglin/disk_ext/Python/Python3/aarch32/bin .
 sudo cp  -raf /home/pengdonglin/disk_ext/Python/Python3/aarch32/lib .
 sudo cp  -raf /home/pengdonglin/disk_ext/Python/Python3/aarch32/include .
 sudo cp  -raf /home/pengdonglin/disk_ext/Python/Python3/aarch32/share .

 #Python2
 sudo cp  -raf /home/pengdonglin/disk_ext/Python/Python2/aarch32/bin .
 sudo cp  -raf /home/pengdonglin/disk_ext/Python/Python2/aarch32/lib .
 sudo cp  -raf /home/pengdonglin/disk_ext/Python/Python2/aarch32/include .
 sudo cp  -raf /home/pengdonglin/disk_ext/Python/Python2/aarch32/share .
 popd

 #SQlite3
 sudo cp -raf /home/pengdonglin/disk_ext/Third_Part/SQlite3/aarch32/bin/* rootfs/bin/
 sudo cp -raf /home/pengdonglin/disk_ext/Third_Part/SQlite3/aarch32/include/* rootfs/include/
 sudo cp -raf /home/pengdonglin/disk_ext/Third_Part/SQlite3/aarch32/lib/* rootfs/lib/
 sudo cp -raf /home/pengdonglin/disk_ext/Third_Part/SQlite3/aarch32/share/* rootfs/usr/share

 #Readline
 sudo cp -raf /home/pengdonglin/disk_ext/Third_Part/Readline/aarch32/include/ rootfs/include/
 sudo cp -raf /home/pengdonglin/disk_ext/Third_Part/Readline/aarch32/lib/* rootfs/lib/

 #Zlib
 sudo cp -raf /home/pengdonglin/disk_ext/Third_Part/Zlib/aarch32/include/* rootfs/include/
 sudo cp -raf /home/pengdonglin/disk_ext/Third_Part/Zlib/aarch32/lib/* rootfs/lib/

 #BeautifulSoup4
 sudo cp -raf /home/pengdonglin/disk_ext/Python/BeautifulSoup4/beautifulsoup4-4.5.3/bs4  rootfs/usr/lib/python2.7/site-packages
 sudo cp -raf /home/pengdonglin/disk_ext/Python/BeautifulSoup4/beautifulsoup4-4.5.3/py3k/bs4  rootfs/usr/lib/python3.6/site-packages

 #Requests
 sudo cp -raf /home/pengdonglin/disk_ext/Python/Requests/requests-2.3.0/requests  rootfs/usr/lib/python2.7/site-packages
 sudo cp -raf /home/pengdonglin/disk_ext/Python/Requests/requests-2.3.0/requests  rootfs/usr/lib/python3.6/site-packages

 #Boa
 sudo cp -raf /home/pengdonglin/disk_ext/Third_Part/WebServer/Boa/boa-0.94.13/src/boa rootfs/bin
 sudo mkdir -p rootfs/usr/lib/boa
 sudo cp -raf /home/pengdonglin/disk_ext/Third_Part/WebServer/Boa/boa-0.94.13/src/boa_indexer rootfs/usr/lib/boa
 sudo mkdir -p rootfs/var/www/cgi-bin
 sudo mkdir -p rootfs/var/log/boa

 sudo rm -rf rootfs/lib/*.a
 sudo arm-none-linux-gnueabi-strip rootfs/lib/* rootfs/bin/*
 sudo arm-none-linux-gnueabi-strip rootfs/usr/lib/boa/*
 sudo arm-none-linux-gnueabi-strip rootfs/usr/lib/*
 sudo arm-none-linux-gnueabi-strip rootfs/usr/bin/*
 sudo arm-none-linux-gnueabi-strip rootfs/bin/*

 sudo mkdir -p rootfs/dev/
 sudo mknod rootfs/dev/tty1 c 4 1
 sudo mknod rootfs/dev/tty2 c 4 2
 sudo mknod rootfs/dev/tty3 c 4 3
 sudo mknod rootfs/dev/tty4 c 4 4
 sudo mknod rootfs/dev/console c 5 1
 sudo mknod rootfs/dev/null c 1 3

 sudo mkdir ./tmpfs/
 sudo mount -t ext4 /dev/loop0p1 ./tmpfs/
 sudo rm -rf ./tmpfs/*
 sudo cp -raf rootfs/* ./tmpfs/

 sleep 2
 sudo umount ./tmpfs/

 sudo losetup -d /dev/loop0

3、测试

 [root@vexpress ]# python3
 Python 3.6. (default, May   , ::)
 [GCC 4.8.  (prerelease)] on linux
 Type "help", "copyright", "credits" or "license" for more information.
 >>> import requests
 >>>
 [root@vexpress ]# python2
 Python 2.7. (default, May   , ::)
 [GCC 4.8.  (prerelease)] on linux2
 Type "help", "copyright", "credits" or "license" for more information.
 >>> import requests
 >>> 

 

三、编写python程序获取开关状态

get_switch.py2:

 #!/usr/bin/env python2

 import requests
 import time

 apiurl = "http://api.yeelink.net/v1.0/device/7445/sensor/405914/datapoints"
 apiheaders = {'U-ApiKey':'3957bd54eaddd2fda1f35841d52776d9'}

 while True:
     r = requests.get(apiurl, headers=apiheaders)
     print(r.text)
     sw = r.json()
     if sw['value'] == 1:
         print("Switch On")
     elif sw['value'] == 0:
         print("Switch Off")
     time.sleep(2)

get_switch.py3:

 #!/usr/bin/env python3

 import requests
 import time

 apiurl = "http://api.yeelink.net/v1.0/device/7445/sensor/405914/datapoints"
 apiheaders = {'U-ApiKey':'3957bd54eaddd2fda1f35841d52776d9'}

 while True:
     r = requests.get(apiurl, headers=apiheaders)
     print(r.text)
     sw = r.json()
     if sw['value'] == 1:
         print("Switch On")
     elif sw['value'] == 0:
         print("Switch Off")
     time.sleep(2)

四、测试

运行测试程序，然后在手机客户端或在网页端修改开关的状态，测试程序会联网获得开关的状态：

 

完。