项目开发环境搭建
raspbian pi文档 https://www.raspberrypi.org/documentation/configuration/raspi-config.md
https://www.raspberrypi.org/documentation/linux/software/apt.md
1. install go env on aliyun centos server
参考
https://golang.org/dl/
https://golang.org/doc/install/source#environment
cd /home/
wget https://storage.googleapis.com/golang/go1.8.3.linux-amd64.tar.gz
tar zxvf go1.8.3.linux-amd64.tar.gz
vim /etc/profile
export GOROOT=/home/go
export GOPATH=/home/gopro
export PATH=$PATH:/$GOROOT/bin:/$GOPATH/bin
source /etc/profile
1.1 install go subversion on raspbian
/home/pi/go
vim /etc/profile
export GOROOT=/home/pi/go
export GOPATH=/home/pi/gopro
export PATH=$PATH:/$GOROOT/bin:/$GOPATH/bin
source /etc/profile
sudo apt-get install subversion
2. 下载树莓派系统
http://www.raspberrypi.org/downloads
2017-04-10-raspbian-jessie-lite.zip
解压得到 2017-04-10-raspbian-jessie-lite.img
SDFormatter.exe 软件格式化 SD 卡。
Win32DiskImager.exe 烧写系统 2017-04-10-raspbian-jessie-lite.img
烧写完成后，需要在SDcard根目录下 创建ssh目录 否则无法启动ssh服务，无法通过ssh登录设备
插上SD卡 插上网线 上电即可
3.Fing Android IP软件查看局域网内IP 然后通过SSH协议登录
192.168.0.107
树莓派 raspbian 系统 pi 用户密码默认为 raspberry ；root 权限密码为 raspberry
passwd 修改用户名和密码 loraserver
参考：http://shaocheng.li/post/blog/2017-05-09#toc_6
4.配置语言 时区
在 I1 Change Locale 中设置本地语言，取消 en_GB.UTF-8 UTF-8 ，选中 en_US.UTF-8 UTF-8 。
在 I2 Change Timezone 中设置时区为 Asia 下的 Shanghai 。
在 I3 Change Keyboard Layout 设置键盘布局，依次选择 Generic 104-key PC > Other > English (US) > English (US) > The default for the keyboard layout > No compose key 。
在 I4 Change Wi-fi Country 中设置CN China
完成配置后，选择 Finish ，根据提示重启系统，如果没有提示，可以执行 sudo reboot 重启系统。
5.Install vim/rzsz
pi@raspberrypi:~ $ sudo apt-get update
pi@raspberrypi:~ $ sudo apt-get remove vim-common
pi@raspberrypi:~ $ sudo apt-get install vim
cat /proc/version
Linux version 4.4.50-v7+ (dc4@dc4-XPS13-9333) (gcc version 4.9.3 (crosstool-NG crosstool-ng-1.22.0-88-g8460611) ) #970 SMP Mon Feb 20 19:18:29 GMT 2017
lsb_release -a
No LSB modules are available.
Distributor ID: Raspbian
Description: Raspbian GNU/Linux 8.0 (jessie)
Release: 8.0
Codename: jessie
6.配置wifi
请参考：https://i.cmgine.net/archives/11053.html
sudo vim /etc/network/interfaces
修改iface wlan0 inet manual 为 iface wlan0 inet dhcp
sudo vim /etc/wpa_supplicant/wpa_supplicant.conf
修改
# 最常用的配置。WPA-PSK 加密方式。添加下面的行(原来的行务必不要删除)，该方式支持多个wifi
network={
ssid="****"
psk="***"
priority=4
}
network={
ssid="***"
psk="******"
priority=4
}
sudo ifup wlan0 即可
7. install rzsz
sudo apt-get install lrzsz
8. update and upgrade
sudo apt-get update
sudo apt-get upgrade
9.温度传感器配置
dtoverlay=w1-gpio,gpiopin=4
可参考文献：
File: w1-gpio-overlay.dtb
Info: Configures the w1-gpio Onewire interface module.
Use this overlay if you *don't* need a pin to drive an external pullup.
Load: dtoverlay=w1-gpio,<param>=<val>
Params: gpiopin GPIO pin for I/O (default "4")
pullup Non-zero, "on", or "y" to enable the parasitic
power (2-wire, power-on-data) feature
File: w1-gpio-pullup-overlay.dtb
Info: Configures the w1-gpio Onewire interface module.
Use this overlay if you *do* need a pin to drive an external pullup.
Load: dtoverlay=w1-gpio-pullup,<param>=<val>,...
Params: gpiopin GPIO pin for I/O (default "4")
pullup Non-zero, "on", or "y" to enable the parasitic
power (2-wire, power-on-data) feature
extpullup GPIO pin for external pullup (default "5")
