快速上手 R2

介绍

  Banana Pi R2是一块基于路由功能的开发板，R2上可以运行Android和开源系统openwrt，Ubuntu等，其具有4路Gb通信能力的lan口，1路Gb通信能力的wan口以及300Mb通信能力的无线通信能力。
  

关于更多: Banana Pi BPI-R2

关键特性

• MediaTek MT7623N, Quad-core ARM Cortex-A7
• Mali 450 MP4 GPU
• 2G DDR3 SDRAM
• 1x Mini PCIE interface
• 2x SATA interface
• 4x Gigabit LAN 1x Gigabit WAN

BPI-R2 SATA 接口

BPI-R2 支持2个sata接口和板载电源接口.

你可以用sata线将硬盘接到R2上.

• 测试SAMSUNG SSD 硬盘读写性能的方法如下：

读取硬盘: 230MB/s \(command: dd if=/dev/sda of=/dev/zero bs=1M count=10240\)

刻入硬盘: 192MB/s \(command: dd if=/dev/zero of=/dev/sda bs=1M count=1024 oflag=direct\)

• 注意:

如果用3.5寸的硬盘，你可能需要通过外部电源通电，板载的电源不足以支撑足够的电流.

开发

基础开发

开发前准备

 * 准备一张容量至少 8Gb 的TF卡, 串口线, 一台运行Ubuntu系统的PC机
 * 使用串口线连接R2的调试串口

 * R2调试串口：http://www.fw-web.de/dokuwiki/doku.php?id=en:bpi-r2:debug-uart

烧录第一个Linux镜像到 R2

 1.你可以从下面链接下载最近的镜像
 * Here is the example image link: http://forum.banana-pi.org/t/bpi-r2-new-image-release-ubuntu-16-04-v1-3-2018-3-30/5293
 
 2.在你的Ubuntu系统电脑上安装bpi-tools, 执行以下命令即可安装：
 * apt-get install pv
 * curl -sL https://github.com/BPI-SINOVOIP/bpi-tools/raw/master/bpi-tools | sudo -E bash
 
 3.下载完镜像后, 插入TF卡到你的Ubuntu电脑中
 * 运行命令 "bpi-copy xxx.img /dev/sdx" 烧录镜像到你的TF卡中.
 
 4.完成步骤3后, 请将TF卡插入R2, 长按电源键10s直到启动R2

在SD卡上安装Ubuntu

 1. 从Github上复制bsp代码
 * 执行命令 "git clone [email protected]:BPI-SINOVOIP/BPI-R2-bsp.git" 
 
 2. 执行"./build.sh"命令, 编译你自己的uboot和 kernel.

 
 3. 完成编译后, 执行"cd SD"命令, 插入TF卡到你的PC端 . 
 
 4. 执行命令 "bpi-update -c bpi-r2.conf -d /dev/sdX", 将编译好的kernel更新到你的TF卡中.

在emmc上安装Ubuntu

 1. 如果你想在emmc上安装ubuntu, 请遵循以下这些步骤：
 
   bpi-copy  <XXX.img.zip> /dev/mmcblk1 

 * XXX.img.zip 是我们下载的Ubuntu镜像, 请从 http://www.banana-pi.org/r2-download.html 下载
 * 关机
 * 移除SD卡并开机

如何安装在SD&emmc上安装Openwrt

 1. 从Github上复制OpenWrt代码.
 * 执行命令 "git clone https://github.com/garywangcn/bpi-r2_lede.git"
 
 2. 你需要安装 gcc, binutils, bzip2, flex, python, perl, make, find, grep, diff, unzip, gawk, getopt, subversion, libz-dev and libc headers.
 
 3. 运行"./scripts/feeds update -a"命令，分别获取定义在“feeds.conf / feeds.conf.default”和"./scripts/feeds install -a"中的最新的软件包定义， 然后安装它们的所有符号链接到 package/feeds/.
 
 4. 使用 "make menuconfig"命令来配置你的镜像.
* 选择 "Target System" 来配置 "MediaTek Ralink ARM"
* 选择 "Boot Loaders" 来配置 "u-boot-bpi_r2"
 
 5. 执行"make -j1 V=s" 命令来编译你自己的OpenWrt镜像.
 
 6. 编译完成后，你可以通过两种方法安装镜像.
 (1) 将TF卡插到Ubuntu PC端, 并输入 "build_dir/target-arm_cortex-a7+neon-vfpv4_musl_eabi/linux-mediatek_32/", 
     你会发现两个镜像：
     * mtk-bpi-r2-EMMC.img
     * mtk-bpi-r2-SD.img
 (2) 烧录镜像到TF卡，执行 "dd if=mtk-bpi-r2-SD.img of=/dev/sdX"命令
 
 (3) 如果你想要安装镜像到emmc,请遵循以下步骤：
     * 从SD卡启动R2
     * 复制EMMC镜像到SD卡运行的镜像中
     * 解锁EMMC boot0 block: echo 0 > /sys/block/mmcblk0boot0/force_ro
     * 烧录EMMC镜像到EMMC的用户数据区: dd if=mtk-bpi-r2-EMMC.img of=/dev/mmcblk0 (assume /dev/mmcblk0 is for EMMC)
     * 烧录 preloader 到 EMMC boot0 分区: dd if=mtk-bpi-r2-EMMC.img of=/dev/mmcblk0boot0 bs=1M count=1
     * 更改EMMC的分区配置为48h: 重启SD卡的运行系统, 并输入U-boot命令行，运行命令“emmc pconf 48” (对于此步骤，我们可以使用mmc-utils更改用户空间中的分区配置，请参阅BPI-R2 OpenWrt（LEDE）中源代码获取更多信息：2018-04-11)
     * 关机，移除SD卡，然后重启R2板
 
 7. 此步骤用于升级，如果你构建完成后不想安装镜像，你可以直接运行升级.
 * 拷贝 "bin/targets/mediatek/32/lede-mediatek-32-bananapi,bpi-r2-sysupgrade.tar" to 到正在运行OpenWrt系统的R2板中(无论是从emmc还是SD卡运行的), 然后运行 "sysupgrade lede-mediatek-32-bananapi,bpi-r2-sysupgrade.tar" 命令进行 kernel和 rootfs的升级.

• 1,在R2上安装openWRT: https://www.cnblogs.com/topbin/p/8794152.html
• 2,Banana Pi R2 Openwrt网口配置分析 : https://www.cnblogs.com/topbin/p/9518279.html
• 3,Banana Pi R2开发基于Openwrt的简易路由器 : https://www.cnblogs.com/topbin/p/9519881.html
• 4,Banana Pi R2 Openwrt Luci: https://www.cnblogs.com/topbin/p/9519875.html

网络配置

• 网络配置 : http://www.fw-web.de/dokuwiki/doku.php?id=en:bpi-r2:network:start

进阶开发

GPIO

GPIO 控制

• echo xxx > /sys/class/gpio/export
• echo in/out > /sys/class/gpio/gpioxxx/direction
• echo 0/1 > /sys/class/gpio/gpioxxx/value

检测基础gpio, 你可查看到我的是233

例如：如果你想要更改GPIO22为高电平输出，你需要输入以下命令：

• echo 255（22+233） > /sys/class/gpio/export
• echo out > /sys/class/gpio/gpio255/direction
• echo 1 > /sys/class/gpio/gpio255/value

PWM 控制

• echo x >/sys/class/pwm/pwmchip0/export
• echo 200000 >/sys/class/pwm/pwmchip0/pwmx/period
• echo 100000 >/sys/class/pwm/pwmchip0/pwmx/duty_cycle
• echo 1 >/sys/class/pwm/pwmchip0/pwmx/enable

关于更多 GPIO : http://www.fw-web.de/dokuwiki/doku.php?id=en:bpi-r2:gpio

R2和4G模块的开发

更多资料请参考:

Using 4G module with BananaPi

WiFi and Ap mode on R2 Ubuntu

WiFi Client

• wmt_loader (ignore errors)
• stp_uart_launcher -p /etc/firmware &
• ip link set wlan0 up
• iw dev wlan0 scan | grep SSID
• vim /etc/wpasupplicant/wpa_supplicant.conf
• network={ ssid=“ssid” psk=“password” priority=1}
• wpa_supplicant -i wlan0 -c /etc/wpa_supplicant/wpa_supplicant.conf
• dhclient wlan0

AP mode

• wmt_loader (ignore errors)
• stp_uart_launcher -p /etc/firmware &
• echo A >/dev/wmtWifi
• create your hostapd.conf: "vim /etc/hostapd/hostapd.conf "

 interface=ap0
 bridge=br0
 ssid=test_r2
 driver=nl80211
 country_code=US
 hw_mode=b
 channel=1
 max_num_sta=5
 wpa=2       
 auth_algs=1 
 rsn_pairwise=CCMP
 wpa_key_mgmt=WPA-PSK
 wpa_passphrase=ledetest
 logger_stdout=-1
 logger_stdout_level=2

• According to your network interface(can search internet) to config ap0:

 my network interface which can search internet is wan, and ip is 192.168.30.102, so I config ap0 as follows:

“ifconfig ap0 192.168.30.188 netmask 255.255.255.0”

• Run hostapd : “hostapd -d /etc/hostapd/hostapd.conf”
• Config dhcp file : “vim /etc/dhcp/dhcpd.conf”

 subnet 192.168.30.0 netmask 255.255.255.0 {
 range 192.168.30.2 192.168.30.250;
 option domain-name-servers 8.8.8.8;
 option routers 192.168.30.1; }

• Config dhcp of ap0, then the devices which connect ap0 could get IP: "dhcpd ap0 -pf /var/run/dhcpd.pid "
• And a bridge
• brctl addbr br0
• brctl addif br0 ap0
• brctl addif br wan
• Config br0 : “ifconfig br0 192.168.30.180 netmask 255.255.255.0”
• Add br0 gw as : “route add -net default netmask 255.255.255.0 gw 192.168.30.1 dev br0”

WiFi and Ap mode on R2 Openwrt

AP mode

1. Make a bash script

• vim setup.sh

 #!/bin/ash
 wmt_loader &
 sheep 3
 stp_uart_launcher -p /etc/firmware &
 sleep 5
 echo A > /dev/wmtWifi &
 sleep 5
 hostapd -d hostapd.conf

2. Create your hostapd.conf

• vim hostapd.conf

 interface=ap0
 bridge=br-lan
 ssid=BPI_R2
 driver=nl80211
 country_code=CN
 hw_mode=g
 channel=1
 max_num_sta=5
 wpa=2
 auth_algs=1
 rsn_pairwise=CCMP
 wpa_key_mgmt=WPA-PSK
 wpa_passphrase=ledetest
 logger_stdout=-1
 logger_stdout_level=2

3. Make it run

• ./setup.sh

4. Add it to starting progress

• vim /etc/rc.local

 cd /root/
 sleep 6
 ./setup.sh &

5. If your Ap is not stable, please limit the speed, here I limit download speed as 8Mbit/s, upload as 4Mbit/s

• tc qdisc add dev ap0 root handle 1: htb default 11
• tc class add dev ap0 parent 1:1 classid 1:2 htb rate 8Mbit ceil 4Mbit prio 2

Make your own image

• Prepare a SD card which have installed Ubuntu system
• Boot your SD card with R2, after R2 finish starting, copy your files and config your Ubuntu, then poweroff R2
• Plug your SD card in Linux PC, "cd /media", then "ln -s <your account> pi"
• Execute "bpi-migrate -c bpi-r2.conf -c ubuntu-mate-from-sd.conf -d /dev/sdx"
• Then you could get your own image now

FAQ

• 1.Banana Pi BPI-R2 Razberry board OpenHab2

https://community.openhab.org/t/banana-pi-bpi-r2-razberry-board-openhab2-help/37222/8

Reference Link

http://www.fw-web.de/dokuwiki/doku.php?id=en:bpi-r2:start

http://www.banana-pi.org/r2.html

http://forum.banana-pi.org/