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一点一滴分析LinkIt Smart 7688 问题汇总_2.4g tx1 power slope /offset (0x5ch~0x5dh)
作者：小丑西瓜9 | 2024-02-07 11:36:10
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2.4g tx1 power slope /offset (0x5ch~0x5dh)
定义
$ - 指定Ubuntu系统下命令
# - Openwrt下命令
1. 系统编译
1.1 .config文件
openwrt中，make menuconfig生成.config文件后，我们如何对.config中自定义的差异内容进行进行备份，方便移植到其它的系统中，这是一个问题。当然，有人说有很多简单的方法。但是这些都不是Openwrt开发着所希望看到的。对于Openwrt，开发团队创建了简单的工具scripts/diffconfig.sh`。我们可以采用这个工具进行配置保存工作。
有一个简单的方法，生成diff文件，然后通过Git进行操作，这样我们可以对我们自己的openwrt进行定制备份了。
1.1.1 如何创建config diff文件
$./scripts/diffconfig.sh > config.diff
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1.1.2 如何使用config diff文件
- $cp config.diff .config
- $make defconfig
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或者
- $cat config.diff >> .config
- $make defconfig
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1.1.3 make meunconfig
$make menuconfig
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1.1.3 make kernel_menuconfig
$ make kernel_menuconfig
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1.2 编译
系统编译很简单，直接在系统目录下运行make命令就可以了，如果想查看输出信息，可以在make后面增加V=s/V=99。如果是多核系统，可以在后面再增加j=2或其它数字，这代表同时有多个线程同时运行。这样可以提高编译速度。我的系统是单核的，我验证了一下没有任何改善。多核系统可以测试一下。
$ make V=99
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1.2.1 linux核心编译
如果我们仅仅是想对Linux核心包进行编译，可以采用下面的命令来进行。
$ make target/linux/{clean,prepare} V=s QUILT=1
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1.2.2 package编译（以Madplay为例）
http://jphome.github.io/blog/2014/03/29/openwrt_sdk.html
全新编译madplay
- $ make package/feeds/packages/madplay/{clean,compile,install} V=s
- $ make package/feeds/packages/madplay/{compile,install} V=s
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重新编译madplay
$ make package/feeds/packages/madplay/compile V=s
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1.2.3 package安装(以Madplay为例)
madplay安装
复制ipk文件到openwrt系统(采用scp命令)，然后通过opkg进行安装。
$ scp bin/ramips/packages/packages/madplay-alsa_0.15.2b-4_ramips_24kec.ipk root@192.168.1.168:/tmp
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安装madplay到openwrt
- # root@mylinkit:/tmp# opkg install madplay-alsa_0.15.2b-4_ramips_24kec.ipk
- Installing madplay-alsa (0.15.2b-4) to root...
- Configuring madplay-alsa.
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MadPay源码修改
$ wget ftp://ftp.mars.org/pub/mpeg/madplay-0.15.2b.tar.gz
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得到madplay源码，修改player.c，采用FIFO控制方式，然后编译madplay.
- $ make package/feeds/packages/madplay/{compile,install} V=s
- $ scp bin/ramips/packages/packages/madplay-alsa_0.15.2b-4_ramips_24kec.ipk root@192.168.1.168:/tmp
-
- # opkg install madplay-alsa_0.15.2b-4_ramips_24kec.ipk
- # madplay /Media/USB-A1/*.mp3
- # echo f > /tmp/.madplayFIFO
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创建madplayCon.c文件
# make package/feeds/packages/gogoo/ethMOH/{clean,compile,install} V=s
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- KEY_PAUSE = 'p',
- KEY_STOP = 's',
- KEY_FORWARD = 'f',
- KEY_BACK = 'b',
- KEY_TIME = 't',
- KEY_QUIT = 'q',
- KEY_INFO = 'i',
- KEY_GAINDECR = '-',
- KEY_GAININCR = '+',
- KEY_GAINZERO = '_',
- KEY_GAININFO = '='
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1.3 dts文件修改
1.3.1 按钮相关修改
MT7688按钮一组为32个，所以GPIO0组对应GPIO0-PIO32，GPIO1组对应GPIO32以上的引脚。
参考连接https://wiki.openwrt.org/doc/howto/hardware.button?s[]=button&s[]=hotplug
- gpio-keys-polled {
- compatible = "gpio-keys-polled";
- #address-cells = <1>;
- #size-cells = <0>;
- poll-interval = <20>;
- wps {
- label = "wps";
- gpios = <&gpio1 6 1>; // GPIO38 wifi button
- linux,code = <0x211>;
- };
- key_playpause {
- label = "key_playpause";
- gpios = <&gpio0 15 1>; // GPIO15-KEY_PLAY/Pause(S5)
- linux,code = <164>;
- };
- key_volumeup {
- label = "key_volumeup";
- gpios = <&gpio0 17 1>; //GPIO17-KEY_VOL+(S7)
- linux,code = <115>;
- };
- key_volumedown {
- label = "key_volumedown";
- gpios = <&gpio0 18 1>; //GPIO18-KEY_VOL-(S8)
- linux,code = <114>;
- };
- key_next {
- label = "key_next";
- gpios = <&gpio0 16 1>; //GPIO16-KEY_NEXT(S6)
- linux,code = <0x197>;
- };
- key_previous {
- label = "key_previous";
- gpios = <&gpio0 14 1>; //GPIO14-KEY_PRE(S4)
- linux,code = <0x19c>;
- };
- };
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尖括号中的内容为标准按键代码，可以在linux/include/uapi/linux/input.h中查询到。
1.3.2 SD卡检测引脚电平修改
LinkIt smart7688的SD卡检测，默认是高电平。但是普通的SD卡是低电平。所以，要对dts进行修改。使用下面命令：
$ vi target/linux/ramips/dts/LINKIT7688.dts
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修改前：
- sdhci@10130000 {
- status = "okay";
- mediatek,cd-high;
- // mediatek,cd-poll;
- };
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修改后：
- sdhci@10130000 {
- status = "okay";
- mediatek,cd-low;
- // mediatek,cd-poll;
- };
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1.4 package创建
package的Makefile
- PKG_NAME - The name of the package, as seen via menuconfig and ipkg
- PKG_VERSION - The upstream version number that we’re downloading
- PKG_RELEASE - The version of this package Makefile
- PKG_LICENSE - The license(s) the package is available under, SPDX form.
- PKG_LICENSE_FILE- file containing the license text
- PKG_BUILD_DIR - Where to compile the package
- PKG_SOURCE - The filename of the original sources
- PKG_SOURCE_URL - Where to download the sources from (directory)
- PKG_MD5SUM - A checksum to validate the download
- PKG_CAT - How to decompress the sources (zcat, bzcat, unzip)
- PKG_BUILD_DEPENDS - Packages that need to be built before this package, but are not required at runtime. Uses the same syntax as DEPENDS below.
- PKG_INSTALL - Setting it to “1” will call the package’s original “make install” with prefix set to PKG_INSTALL_DIR
- PKG_INSTALL_DIR - Where “make install” copies the compiled files
- PKG_FIXUP - See below
- PKG_SOURCE_PROTO - the protocol to use for fetching the sources (git, svn)
- PKG_REV - the svn revision to use, must be specified if proto is “svn”
- PKG_SOURCE_SUBDIR - must be specified if proto is “svn” or “git”, e.g. “PKG_SOURCE_SUBDIR:=(PKG_VERSION)”
- PKG_SOURCE_VERSION - must be specified if proto is “git”, the commit hash to check out
- PKG_CONFIG_DEPENDS - specifies which config options depend on this package being selected
- SECTION - The type of package (currently unused) //包的类型
- CATEGORY - Which menu it appears in menuconfig //menuconfig的哪一个菜单显示
- TITLE - A short description of the package //包的简短描述
- DESCRIPTION - (deprecated) A long description of the package //报的一个长描述
- URL - Where to find the original software // 那里找到源软件
- MAINTAINER - (required for new packages) Who to contact concerning the package // 包的联系
- DEPENDS - (optional) Which packages must be built/installed before this package. See below for the syntax. // 哪些包需要必须先编译/安装
- PKGARCH - (optional) Set this to “all” to produce a package with “Architecture: all”
- USERID - (optional) a username:groupname pair to create at package installation time.
1.5 JFFS2-Journalling Flash File System Version2
JFFS2全名是 Journalling Flash File System Version2，是Redhat公司开发的闪存文件系统[1]，其前身是JFFS, 最早只支持NOR Flash, 自2.6版以后开始支持NAND Flash, 极适合使用于嵌入式系统。https://zh.wikipedia.org/wiki/JFFS2
1.5 如何创建自己的板子支持
增加mt7688支持
参考CC代码：(CC-2015/10/19 18:19:18-SHA-1: 3d98b29a3d0aa854fad712a92ace42ad06e92d6b)
* 修改target\linux\ramips\Makefile文件，增加mt7688支持
* 修改target\linux\ramips\modules.mk文件，增加TARGET_ramips_mt7688支持
* 创建target\linux\ramips\mt7688\config-3.18文件
* 创建target\linux\ramips\mt7688\profiles\00-default.mk文件
* 创建target\linux\ramips\mt7688\target.mk文件
增加LinkIt Smart7688支持
参考CC代码：(CC-2015/10/19 18:19:22-SHA-1: 8829dee8871e45c675a4bd4036c188c6d0f5645b)
* 在package\boot\uboot-envtools\files\ramips添加linkits7688板名支持
* 在target\linux\ramips\base-files\etc\board.d\02_network添加linkits7688支持
* 在target\linux\ramips\base-files\lib\ramips.sh中添加linkits7688支持
* 在target\linux\ramips\base-files\lib\upgrade\platform.sh中添加linkits7688支持
* 增加target\linux\ramips\dts\LINKIT7688.dts文件
* 修改target\linux\ramips\image\Makefile文件
* 增加target\linux\ramips\mt7688\profiles\01-mediatek.mk文件
参考windora
* 修改target\linux\ramips\base-files\etc\board.d\02_network
* 修改target\linux\ramips\base-files\lib\ramips.sh
* 修改target\linux\ramips\base-files\lib\upgrade\platform.sh
* 修改target\linux\ramips\image\Makefile
* 创建一个*.mk文件到target\linux\ramips\mt7688\profiles\目录下
* 创建一个example.dts文件到target\linux\ramips\dts\目录下
- root@mylinkit:~# cat /proc/cpuinfo
- system type : MediaTek MT7688 ver:1 eco:2
- machine : MediaTek LinkIt Smart 7688
- processor : 0
- cpu model : MIPS 24KEc V5.5
- BogoMIPS : 385.84
- wait instruction : yes
- microsecond timers : yes
- tlb_entries : 32
- extra interrupt vector : yes
- hardware watchpoint : yes, count: 4, address/irw mask: [0x0ffc, 0x0ffc, 0x0ffb, 0x0ffb]
- isa : mips1 mips2 mips32r1 mips32r2
- ASEs implemented : mips16 dsp
- shadow register sets : 1
- kscratch registers : 0
- package : 0
- core : 0
- VCED exceptions : not available
- VCEI exceptions : not available
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1.6 rpcd - (OpenWrt ubus RPC backend server)
1.7 patch
http://blog.csdn.net/wwx0715/article/details/25160361
- $ quilt --help
- 用法：quilt [--trace[=verbose]] [--quiltrc=XX] command [-h] ...
- quilt --version
- 命令是：
- add fold new remove top
- annotate fork next rename unapplied
- applied graph patches revert upgrade
- delete grep pop series
- diff header previous setup
- edit import push shell
- files mail refresh snapshot
-
- Global options:
-
- --trace
- Runs the command in bash trace mode (-x). For internal debugging.
-
- --quiltrc file
- Use the specified configuration file instead of ~/.quiltrc (or
- /etc/quilt.quiltrc if ~/.quiltrc does not exist). See the pdf
- documentation for details about its possible contents. The
- special value "-" causes quilt not to read any configuration
- file.
-
- --version
- Print the version number and exit immediately.
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1.7.1 准备quilt配置
$ cd ~
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- cat > ~/.quiltrc <<EOF
- QUILT_DIFF_ARGS="--no-timestamps --no-index -p ab --color=auto"
- QUILT_REFRESH_ARGS="--no-timestamps --no-index -p ab"
- QUILT_PATCH_OPTS="--unified"
- QUILT_DIFF_OPTS="-p"
- EDITOR="nano"
- EOF
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**1.7.2
- $ cd ~/openwrt/openwrt_ethMOH/build_dir/target-mipsel_24kec+dsp_uClibc-0.9.33.2/linux-ramips_mt7688/linux-3.18.29/
- $ quilt series
- $ quilt new platform/502-alsa.patch
- $ quilt edit sound/soc/codecs/wm8960.c
- $ quilt diff
- $ quilt refresh
- $ cd ../../../../
- $ make target/linux/update package/index V=s
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修改存在的patch
- $ quilt push platform/502-alsa.patch
- $ quilt edit sound/soc/codecs/wm8960.c
- $ quilt diff
- $ quilt refresh
- $ cd ../../../../
-
- $ make target/linux/update V=s //民间更新patch到target/linux/ramips/patches-xxx方法
- /$ make target/linux/update package/index V=s //官方更新patch到target/linux/ramips/patches-xxx方法
-
- $ make target/linux/{clean,prepare} V=s QUILT=1
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1.8 Makefile
- $? - 当前目标所依赖的文件列表中比当前目标文件还要新的文件
- $@ - 当前目标名字
- $< - 当前依赖文件的名字
- $* - 不包括后缀名的当前依赖文件的名字
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1.9 WM8960声卡
Linkit的默认的声卡是WM8960，该声卡为I2S接口。Linkit默认WM8960使用的为外部晶振提供时钟频率。所以如果我们希望采用MT7688的REF_CLK0信号作为WM8960的时钟信号的话，我们就需要对MTK的配置文件进行一些修改。
具体的修改可以参考https://github.com/hnhkj/CC15.05.git的代码。
1.10 USB声卡CM108
https://wiki.openwrt.org/doc/howto/usb.audio?s[]=sound
1.11 wps 功能 (don’t support)
http://labs.mediatek.com/forums/posts/list/4850.page
1.12 init.d/rc.d开机自动运行
参考文档：https://wiki.openwrt.org/doc/techref/initscripts
启动方法：
1，创建脚本到 init.d(具体参考原来文档)。
2，开机自动运行./etc/init.d/example enable。
3, 使能自动运行可以在/etc/rc.d/ 下查找到连接
1.13 eclipse
http://downloads.openwrt.org/docs/eclipse.pdf
2. 系统配置
2.1 MTD
参考连接：https://wiki.openwrt.org/doc/techref/mtd
- root@mylinkit:~# mtd
- Usage: mtd [<options> ...] <command> [<arguments> ...] <device>[:<device>...]
-
- The device is in the format of mtdX (eg: mtd4) or its label.
- mtd recognizes these commands:
- unlock unlock the device
- refresh refresh mtd partition
- erase erase all data on device
- verify <imagefile>|- verify <imagefile> (use - for stdin) to device
- write <imagefile>|- write <imagefile> (use - for stdin) to device
- jffs2write <file> append <file> to the jffs2 partition on the device
- fixseama fix the checksum in a seama header on first boot
- Following options are available:
- -q quiet mode (once: no [w] on writing,
- twice: no status messages)
- -n write without first erasing the blocks
- -r reboot after successful command
- -f force write without trx checks
- -e <device> erase <device> before executing the command
- -d <name> directory for jffs2write, defaults to "tmp"
- -j <name> integrate <file> into jffs2 data when writing an image
- -s <number> skip the first n bytes when appending data to the jffs2 partiton, defaults to "0"
- -p write beginning at partition offset
- -l <length> the length of data that we want to dump
-
- Example: To write linux.trx to mtd4 labeled as linux and reboot afterwards
- mtd -r write linux.trx linux
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- 2.1.1 如何显示MTD状态
- root@mylinkit:/tmp# cat /proc/mtd
- dev: size erasesize name
- mtd0: 00030000 00010000 "u-boot"
- mtd1: 00010000 00010000 "u-boot-env"
- mtd2: 00010000 00010000 "factory"
- mtd3: 00fb0000 00010000 "firmware"
- mtd4: 0011a791 00010000 "kernel"
- mtd5: 00e9586f 00010000 "rootfs"
- mtd6: 00100000 00010000 "rootfs_data"
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- 2.1.2 dd命令：/bin/dd
读取mtd2内的数据内容，mac地址
# dd bs=1 skip=3 count=6 if=/dev/mtd2 2>/dev/null | hexdump
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参考文档：linkit-smart-7688-feed\mtk-linkit\files\etc\uci-defaults\51_linkit_config - Line30:
MAC=$(dd bs=1 skip=7 count=3 if=/dev/mtd2 2>/dev/null | hexdump -v -n 3 -e '3/1 "%02X"'
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- 2.1.3 入如何写firmware到flash.
- # cd /tmp
- # wget http://www.example.org/original_firmware.bin
- # mtd -r write /tmp/original_firmware.bin firmware
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- 2.1.4 备份MTD2/factory信息
# dd if=/dev/mtd2 of=/tmp/factory.bin
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- 2.1.5 写factory.bin到mtd2
# mtd -r write /tmp/factory.bin factory
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注意：如果命令返回不能写入MTD2，可能是由于你的系统设定了禁止写该区域的权限。我们可以通过修改target/linux/ramips/dts/LINKIT7688.dts，注销禁止代码。这样就可以将数据写入到MTD2区域了。
- I know that we can modify LINKIT7688 file to allow mtd command modify mtd2's data.
- /target/linux/ramips/dts/LINKIT7688
- line82-86:
- factory: partition@40000 {
- label = "factory";
- reg = <0x40000 0x10000>;
- read-only;
- };
- delete read-only.
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- fw_printenv命令：/usr/sbin/fw_printenv
参考文档：linkit-smart-7688-feed\mtk-linkit\files\etc\init.d\linkit
Line15:
SEQ=
fw_printenv -n wifi_seq
2.2 用SD卡扩展空间(未验证)
参考: http://labs.mediatek.com/forums/posts/list/4121.page
- Yes!you can mount tf card as overlay
- 1.install block-mount e2fsprogs kmod-fs-ext4
- 2.mkfs.ext4 /dev/mmcblk0
- 3.block detect > /etc/config/fstab
- 4.vi etc/config/fstab
- modify option 'target' '/overlay'
- modify option 'enable' '1'
- 5.reboot,use df -h check
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2.3 ifconfig 相关参数
状态：Ethernet0 连接PC，Wifi连接Router (状态非常好)
- ifconfig
- apcli0 Link encap:Ethernet HWaddr 9E:65:F9:0B:18:55
- inet addr:192.168.1.104 Bcast:192.168.1.255 Mask:255.255.255.0
- inet6 addr: fe80::9c65:f9ff:fe0b:1855/64 Scope:Link
- UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
- RX packets:0 errors:0 dropped:0 overruns:0 frame:0
- TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
- collisions:0 txqueuelen:1000
- RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)
-
- br-lan Link encap:Ethernet HWaddr 9C:65:F9:1B:10:27
- inet addr:192.168.100.1 Bcast:192.168.100.255 Mask:255.255.255.0
- inet6 addr: fe80::9e65:f9ff:fe1b:1027/64 Scope:Link
- inet6 addr: fdef:dd3c:f1e1::1/60 Scope:Global
- UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
- RX packets:478 errors:0 dropped:0 overruns:0 frame:0
- TX packets:340 errors:0 dropped:0 overruns:0 carrier:0
- collisions:0 txqueuelen:0
- RX bytes:45279 (44.2 KiB) TX bytes:46562 (45.4 KiB)
-
- eth0 Link encap:Ethernet HWaddr 9C:65:F9:1B:10:27
- UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
- RX packets:525 errors:0 dropped:0 overruns:0 frame:0
- TX packets:307 errors:0 dropped:0 overruns:0 carrier:0
- collisions:0 txqueuelen:1000
- RX bytes:70666 (69.0 KiB) TX bytes:46599 (45.5 KiB)
- Interrupt:5
-
- eth0.1 Link encap:Ethernet HWaddr 9C:65:F9:1B:10:27
- inet6 addr: fe80::9e65:f9ff:fe1b:1027/64 Scope:Link
- UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
- RX packets:0 errors:0 dropped:0 overruns:0 frame:0
- TX packets:26 errors:0 dropped:0 overruns:0 carrier:0
- collisions:0 txqueuelen:0
- RX bytes:0 (0.0 B) TX bytes:5911 (5.7 KiB)
-
- lo Link encap:Local Loopback
- inet addr:127.0.0.1 Mask:255.0.0.0
- inet6 addr: ::1/128 Scope:Host
- UP LOOPBACK RUNNING MTU:65536 Metric:1
- RX packets:1269 errors:0 dropped:0 overruns:0 frame:0
- TX packets:1269 errors:0 dropped:0 overruns:0 carrier:0
- collisions:0 txqueuelen:0
- RX bytes:88230 (86.1 KiB) TX bytes:88230 (86.1 KiB)
-
- ra0 Link encap:Ethernet HWaddr 9C:65:F9:1B:18:55
- inet6 addr: fe80::9e65:f9ff:fe1b:1855/64 Scope:Link
- UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
- RX packets:11176 errors:0 dropped:0 overruns:0 frame:0
- TX packets:2457 errors:0 dropped:0 overruns:0 carrier:0
- collisions:0 txqueuelen:1000
- RX bytes:2248608 (2.1 MiB) TX bytes:42335 (41.3 KiB)
- Interrupt:6
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2.4 network 配置
- config interface 'loopback'
- option ifname 'lo'
- option proto 'static'
- option ipaddr '127.0.0.1'
- option netmask '255.0.0.0'
-
- config globals 'globals'
- option ula_prefix 'fd01:80d1:1f98::/48'
-
- config interface 'lan'
- option ifname 'eth0'
- option force_link '1'
- option type 'bridge'
- option proto 'static'
- option netmask '255.255.255.0'
- option ip6assign '60'
- option ipaddr '192.168.100.1'
- option macaddr '00:0c:43:e1:76:2a'
-
- config switch
- option name 'switch0'
- option reset '1'
- option enable_vlan '0'
-
- config interface 'wan'
- option proto 'dhcp'
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2.5 eeprom配置
eepromn内容可以在/lib/firmware/mt7628.eeprom中。
- 2.1 - Chip ID(0x00h)
- 2.2 - Layout Revision ID(0x02)
- 2.3 - WIFI MAC Address (0x04)
- 2.4 - WIFI MAC Address (0x28)
- 2.5 - WIFI MAC Address (0x2E)
- 2.6 - NIC Configuration 0 (0x34)
- 2.7 - NIC Configuration 1 (0x36)
- 2.8 - Country Region Code for 2.4G band (0x39)
- 2.9 - LED Mode (0x3B)
- 2.10 - NIC COnfiguration 2 (0x42)
- 2.11 - RSSI Offset for 2.4G band (0x46)
- 2.12 - 20M/40M BW Power Delta for 2.4G band (0x50)
- 2.13 - Temp. Sensor Calibation (0x55)
- 2.14 - 2.4G Tx0 Power Slope/offset (0x56~0x57)
- 2.15 - 2.4G Tx0 Target Power (0x58)
- 2.16 - 2.4G Tx0 Power Low/Middle/High Channel (0x59)
- 2.17 - 2.4G Tx1 Power Slope/Offset (0x5C~0x5D)
- 2.18 - 2.4G Tx1 Target Power (0x5E)
- 2.19 - 2.4G Tx1 Power Offset Low/Middle/High Channel (0x5F~0x61)
- 2.20 - 2.4G Tx rate power configuration (0xA0~0xBF)
- 2.21 - External LNA (0xC0)
- 2.22 - 2.4GHz Step Number (0xC6)
- 2.23 - Frequency offset (0xF4~0xF6)
- 2.24 - Reserved for Customer (0x140~0x1EF)
2.6 Sysupgrade
https://wiki.openwrt.org/doc/howto/generic.sysupgrade
与opkg, mtd 等相比, sysupgrade 仅仅是个shell脚本: /sbin/sysupgrade 诣在更容易的实现系统更新.
timezone //时区
时区设置保存在/tmp/TZ中。
- root@mylinkit:/tmp# cat TZ
- UTC
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2.7 uhttpd
https://wiki.openwrt.org/doc/howto/http.uhttpd
2.8 修改Linkit_Smart_7688默认的SSID
在mtk-linkit\files\etc\uci-defaults\51\_linkit\_config文件中，默认是读取wifi MAC address的后3个字节，加载到字符串LiniIt_Smart_7688_的后面，根据MAC地址的唯一性，形成一个唯一的SSID地址。如果我们想修改该SSID的话，可以在这个文件中进行修改。又或者配置SSID到uboot环境变量中，形成自己的SSID。这部分实现可以参考lks7688.cfg部分。如果系统在uboot中设置了SSID的话，系统将显示该SSID。如果没有设置的话，系统将设置该文件配置的SSID。
- [ -n "${SSID}" ] || { \
- MAC=$(dd bs=1 skip=7 count=3 if=/dev/mtd2 2>/dev/null | hexdump -v -n 3 -e '3/1 "%02X"')
- SSID=LinkIt_Smart_7688_${MAC}
- }
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2.9 修改Linkit_Smart_7688的版本号
Linkit_Smart_7688默认拥有自己的版本号,该版本号定义在mtk-linkit\files\etc\uci-defaults\54_linkit_version文件中。
uci set system.@system[0].firmware_version=v0.9.3
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2.10 修改Linkit_Smart_7688的主机名
Linkit_Smart_7688的主机名在mtk-linkit\files\etc\uci-defaults\51_linkit_config文件中定义，你可以通过修改这个文件来修改主机名。
uci set system.@system[-1].hostname="mylinkIt"
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2.11 获得Linkit_Smart_7688的MAC地址
对于如何获取MAC地址，OpenWrt提供了详细的程序接口。可以参考\openwrt\package\base-files\files\lib\functions\system.sh文件，该文件包含的mac的操作函数。在很多的sh文档中都包含的对该文件的引用。
例如：mtk-linkit\files\etc\uci-defaults\51_linkit_config文件中的wan_mac获取。
wan_mac=$(mtd_get_mac_binary factory 4)
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获取ap_mac地址（源自：mtk-linkit\files\etc\rc.button\wps
文件）：
iwinfo ra0 info | grep Access | awk '{print $3}')
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2.12 Linkit_Smart_7688默认模组的添加和删除
Linkit_Smart_7688默认添加了很多的模组，例如：Python，Node.js等。我们如何对默认的模组进行修改，添加或删除想要的模组呢。其实很简单，我们就是需要修改mtk-linkit\Makefile，在该文件中修改想要或不想要的模组。然后feed install它就可以了。当然，你会发现已经安装过的模组，在文件中删除后，编译后仍然会在firmware中，这是怎么回事呢？这是因为，在编译默认的Makefile的时候，系统通过feed已经将原来默认的模组添加进了.config。如果要删除它们，需要同feed来删除它们。然后，编译以后就不会出现了。
- define Package/mtk-linkit
- TITLE:=MTK LinkIt Smart board support package
- HIDDEN:=1
- DEPENDS:=@TARGET_ramips_mt7688_LinkIt7688 \
- +gdbserver +curl +strace +coreutils +coreutils-stty \
- +avahi-nodbus-daemon +mountd +mjpg-streamer \
- +uhttpd +rpcd +rpcd-mod-iwinfo +git +git-http +samba36-server \
- +python +python-pyserial +python-pip +hidapi \
- +libmraa +libupm +node +node-hid +node-cylon-firmata +yunbridge \
- +luci +luci-theme-openwrt +luci-app-mjpg-streamer +luci-app-samba +luci-lib-json \
- +rpcd-mod-rpcsys +cgi-io +avrdude +spi-tools +uboot-envtools \
- +kmod-fs-vfat +kmod-fs-exfat +kmod-i2c-core +kmod-i2c-ralink \
- +kmod-nls-base +kmod-nls-cp437 +kmod-nls-iso8859-1 \
- +kmod-nls-iso8859-15 +kmod-nls-iso8859-2 +kmod-nls-utf8 \
- +kmod-sdhci-mt7620 +kmod-usb-storage \
- +kmod-video-core +kmod-video-uvc \
- +kmod-sound-core +kmod-sound-mtk +madplay-alsa +alsa-utils \
- +mtk-linkit-webui +mtk-sdk-wifi +tcpdump-mini
-
- CATEGORY:=Base system
- DEFAULT:=y
- endef
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2.13 如果修改Linkit_Smart_7688默认opkg连接地址
- ubuntu@ubuntu-System-Name:~/openwrt/openwrt_ethMOH$ cat feeds.conf.default
- src-git packages https://github.com/openwrt/packages.git;for-15.05
- src-git luci https://github.com/openwrt/luci.git;for-15.05
- src-git routing https://github.com/openwrt-routing/packages.git;for-15.05
- src-git telephony https://github.com/openwrt/telephony.git;for-15.05
- src-git management https://github.com/openwrt-management/packages.git;for-15.05
- #src-git targets https://github.com/openwrt/targets.git
- #src-git oldpackages http://git.openwrt.org/packages.git
- #src-svn xwrt http://x-wrt.googlecode.com/svn/trunk/package
- #src-svn phone svn://svn.openwrt.org/openwrt/feeds/phone
- #src-svn efl svn://svn.openwrt.org/openwrt/feeds/efl
- #src-svn xorg svn://svn.openwrt.org/openwrt/feeds/xorg
- #src-svn desktop svn://svn.openwrt.org/openwrt/feeds/desktop
- #src-svn xfce svn://svn.openwrt.org/openwrt/feeds/xfce
- #src-svn lxde svn://svn.openwrt.org/openwrt/feeds/lxde
- #src-link custom /usr/src/openwrt/custom-feed
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该连接地址的修改主要修改一个文件mtk-linkit\files\etc\opkg\linkit.conf。我们可以通过修改这个文件中的文件指向你的opkg连接地址，然后编译。编译后出的OS就可以通过opkg install连接你的服务器了。当然，如果你不想使用Linkit_Smart_7688默认的opkg连接地址的话，你可以在mtk-linkit\files\etc\init.d\linkit文件中删除对linkit.conf的初始化部分，这样在OpenWrt启动的时候就不会讲linit.conf添加/etc/opkg/distfeeds.conf。
当然，如果你不想修改系统，只是在OpenWrt中修改opkg连接地址的话，那也很简单。你只要用vi命令修改/etc/opkg/distfeeds.conf文件就可以了。这也很简单。
2.14 如果修改Linkit_Smart_7688默认lan ipaddress.
默认的Lan IPAddress在OpenWrt的/etc/config/network文件中设置，如果想修改ip地址。可以在linkit-smart-7688-feed\mtk-linkit\files\etc\uci-defaults\51_linkit_config文件中进行修改。linkit-smart-7688-feed默认的Lan ipaddr 是 192.168.100.1。
2.15 如果修改Linkit_Smart_7688的GPIO11.
Linkit_Smart_7688的GPIO11引脚，默认用来锁定CL245A芯片的。该芯片是一个锁存器，用来提升MT7688的引脚输出功率和保护MT7688的引脚功能。但是，如果你不需要这个功能，希望将GPIO11引脚释放出来的话。你可以对源代码进行一些修改或者删除。MTK在linux中增加了一个驱动，用来驱动GPIO11引脚的。详细内容可以参考target\linux\ramips\patches-3.18\0200-linkit_bootstrap.patch文件。
2.16 aplay多声卡的使用
Linkit默认使用WM8960声卡，现在增加了一个USB声卡，声卡检测发现了该USB声卡。http://alsa.opensrc.org/MultipleCards
2.16.1 aplay查询有效声卡 aplay -l
- root@mylinkit:/# aplay -l
- **** List of PLAYBACK Hardware Devices ****
- card 0: I2S [MTK APSoC I2S], device 0: WMserious PCM wm8960-hifi-0 []
- Subdevices: 1/1
- Subdevice #0: subdevice #0
- card 1: Set [C-Media USB Headphone Set], device 0: USB Audio [USB Audio]
- Subdevices: 1/1
- Subdevice #0: subdevice #0
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2.16.2 用指定的声卡播放 aplay -Dhw:x (x=0,x=1)
- root@mylinkit:/# aplay -Dhw:1 /Media/SD-P1/*.wav
- Playing WAVE '/Media/SD-P1/1.wav' : Signed 16 bit Little Endian, Rate 44100 Hz, Stereo
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2.16.3 aply -h
- root@mylinkit:/# aplay -h
- Usage: aplay [OPTION]... [FILE]...
-
- -h, --help help
- --version print current version
- -l, --list-devices list all soundcards and digital audio devices
- -L, --list-pcms list device names
- -D, --device=NAME select PCM by name
- -q, --quiet quiet mode
- -t, --file-type TYPE file type (voc, wav, raw or au)
- -c, --channels=# channels
- -f, --format=FORMAT sample format (case insensitive)
- -r, --rate=# sample rate
- -d, --duration=# interrupt after # seconds
- -M, --mmap mmap stream
- -N, --nonblock nonblocking mode
- -F, --period-time=# distance between interrupts is # microseconds
- -B, --buffer-time=# buffer duration is # microseconds
- --period-size=# distance between interrupts is # frames
- --buffer-size=# buffer duration is # frames
- -A, --avail-min=# min available space for wakeup is # microseconds
- -R, --start-delay=# delay for automatic PCM start is # microseconds
- (relative to buffer size if <= 0)
- -T, --stop-delay=# delay for automatic PCM stop is # microseconds from xrun
- -v, --verbose show PCM structure and setup (accumulative)
- -V, --vumeter=TYPE enable VU meter (TYPE: mono or stereo)
- -I, --separate-channels one file for each channel
- -i, --interactive allow interactive operation from stdin
- -m, --chmap=ch1,ch2,.. Give the channel map to override or follow
- --disable-resample disable automatic rate resample
- --disable-channels disable automatic channel conversions
- --disable-format disable automatic format conversions
- --disable-softvol disable software volume control (softvol)
- --test-position test ring buffer position
- --test-coef=# test coefficient for ring buffer position (default 8)
- expression for validation is: coef * (buffer_size / 2)
- --test-nowait do not wait for ring buffer - eats whole CPU
- --max-file-time=# start another output file when the old file has recorded
- for this many seconds
- --process-id-file write the process ID here
- --use-strftime apply the strftime facility to the output file name
- --dump-hw-params dump hw_params of the device
- --fatal-errors treat all errors as fatal
- Recognized sample formats are: S8 U8 S16_LE S16_BE U16_LE U16_BE S24_LE S24_BE U24_LE U24_BE S32_LE S32_BE U32_LE U32_BE FLOAT_LE FLOAT_BE FLOAT64_LE FLOAT64_BE IEC958_SUBFRAME_LE IEC958_SUBFRAME_BE MU_LAW A_LAW IMA_ADPCM MPEG GSM SPECIAL S24_3LE S24_3BE U24_3LE U24_3BE S20_3LE S20_3BE U20_3LE U20_3BE S18_3LE S18_3BE U18_3LE U18_3BE G723_24 G723_24_1B G723_40 G723_40_1B DSD_U8 DSD_U16_LE
- Some of these may not be available on selected hardware
- The available format shortcuts are:
- -f cd (16 bit little endian, 44100, stereo)
- -f cdr (16 bit big endian, 44100, stereo)
- -f dat (16 bit little endian, 48000, stereo)
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2.16.4 arecord & aplay test
- arecord -f cd -t wav -M /Media/USB-A1/my_recording.wav
- aplay -M my_recording.wav
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2.16.5 参考连接：
http://www.cnblogs.com/cslunatic/p/3227655.html
http://blog.chinaunix.net/uid-26588712-id-3054726.html
https://wiki.archlinux.org/index.php/Advanced_Linux_Sound_Architecture_%28%E7%AE%80%E4%BD%93%E4%B8%AD%E6%96%87%29#.E8.AE.BE.E7.BD.AE.E9.BB.98.E8.AE.A4.E5.A3.B0.E5.8D.A1
2.17 madplay
http://www.crystalradio.cn/thread-466848-1-1.html
http://blog.csdn.net/fengliang191/article/details/19763579
madplay默认按键
- The keyboard controls are documented in the man page for madplay:
- P Pause; press any key to resume.
- S Stop; press any key to replay the current file
- from the beginning.
- F Forward; advance to the next file.
- B Back; replay the current file, unless it has
- been playing for less than 4 seconds, in which
- case replay the previous file.
- T Time display; change the time display mode. This
- only works with -v (--verbose). The display
- mode alternates among overall playing time, cur-
- rent time remaining, and current playing time.
- + Increase gain; increase the audio output gain by
- 0.5 dB.
- - Decrease gain; decrease the audio output gain by
- 0.5 dB.
- Q Quit; stop decoding and exit.
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-
- root@mylinkit:~# madplay -h
- Usage: madplay [OPTIONS] FILE [...]
- Decode and play MPEG audio FILE(s).
-
- Verbosity:
- -v, --verbose show status while decoding
- -q, --quiet be quiet but show warnings
- -Q, --very-quiet be quiet and do not show warnings
- --display-time=MODE use default verbose time display MODE
- (remaining, current, overall)
-
- Decoding:
- --downsample reduce sample rate 2:1
- -i, --ignore-crc ignore CRC errors
- --ancillary-output=PATH write ancillary data to PATH
-
- Audio output:
- -o, --output=[TYPE:]PATH write output to PATH with format TYPE (below)
- -b, --bit-depth=DEPTH request DEPTH bits per sample
- -R, --sample-rate=HERTZ request HERTZ samples per second
- -d, --no-dither do not dither output PCM samples
- --fade-in[=DURATION] fade-in songs over DURATION (default 0:05)
- -a, --attenuate=DECIBELS attenuate signal by DECIBELS (-)
- -a, --amplify=DECIBELS amplify signal by DECIBELS (+)
- -A, --adjust-volume=DECIBELS override per-file volume adjustments
- -G, --replay-gain[=PROFILE] enable Replay Gain volume adjustments using
- PROFILE (radio, audiophile)
-
- Channel selection:
- -1, --left output first (left) channel only
- -2, --right output second (right) channel only
- -m, --mono mix left and right channels for monaural output
- -S, --stereo force stereo output
-
- Playback:
- -s, --start=TIME skip to begin at TIME (HH:MM:SS.DDD)
- -t, --time=DURATION play only for DURATION (HH:MM:SS.DDD)
- -z, --shuffle randomize file list
- -r, --repeat[=MAX] play files MAX times, or indefinitely
- --tty-control enable keyboard controls
- --no-tty-control disable keyboard controls
-
- Miscellaneous:
- -T, --show-tags-only show ID3/encoder tags only (do not decode)
- -V, --version display version number and exit
- --license show copyright/license message and exit
- -h, --help display this help and exit
-
- Supported output formats:
- cdda CD audio, 16-bit big-endian 44100 Hz stereo PCM (*.cdr, *.cda)
- aiff Audio IFF, [16-bit] PCM (*.aif, *.aiff)
- wave Microsoft RIFF/WAVE, [16-bit] PCM (*.wav)
- snd Sun/NeXT audio, 8-bit ISDN mu-law (*.au, *.snd)
- raw binary [16-bit] host-endian linear PCM
- hex ASCII hexadecimal [24-bit] linear PCM
- null no output (decode only)
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2.17.1 C调用函数
参考文档：http://blog.csdn.net/zouzuohuo/article/details/7895917
- system("madplay north.mp3 &");//利用system函数调用madplay播放器播放*.mp3音乐
- system("madplay north.mp3 -r &");//循环播放：参数-r
- system("killall -9 madplay");//利用system函数调用killall命令将madplay终止掉
- system("killall -STOP madplay &");//利用system函数调用killall命令将madplay暂停
- system("killall -CONT madplay &");//利用system函数调用killall命令恢复madplay的播放
-
- killall -19 madplay"使进程挂起以暂停
- killall -18 madplay"使进程恢复运行
- killall -9 madplay"终止进程以停止。
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2.17.2 madplay 播放网路音频
参考文档：https://wiki.openwrt.org/toh/freecom/fsg-3?s[]=madplay
- cd /tmp
- wget http://icy-e-bz-05-cr.sharp-stream.com/magic1054.mp3 -O - | madplay
-
- wget -O - http://u11aw.di.fm:80/di_goapsy | madplay -
- wget -O - http://mp3stream1.apasf.apa.at:8000/ | madplay -
- wget -O - http://hirschmilch.de:7000/psytrance.mp3 | madplay -
-
- wget -O - http://64.236.34.97:80/stream/1014 | madplay -
-
- $ wget–q–O– http://my_music.com/mystream | madplay -Q --no-tty-control- $ wget–q–O– http://my_music.com/mystream | madplay -Q --no-tty-control- $ wget–q–O– http://my_music.com/mystream | madplay -Q --no-tty-control- $ wget–q–O– http://my_music.com/mystream | madplay -Q --no-tty-control-
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2.17.3 显示剩余时间
- madplay -v --display-time=remaining 001.mp3
- madplay -v --display-time=current /tmp/mounts/USB-A1/music/*.mp3
- madplay -v /tmp/mounts/USB-A1/music/*.mp3
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2.17.4 -o 将mp3转换成一个wav文件
- $madplay /Media/SD-P1/moh/*.mp3 -o /tmp/tmp.wav
- $madplay /Media/SD-P1/moh/*.mp3 -o /tmp/tmp.wav |aplay
-
- | madplay - &
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2.17.5 根据文件进行音乐播放
- http://www.epdoc.cn/qrs/18100.html
-
- root@mylinkit:/tmp# find /Media/SD-P1/moh/ -name "*.mp3" | sort >mp3.list
- root@mylinkit:/tmp# more mp3.list
- /Media/SD-P1/moh/001.mp3
- /Media/SD-P1/moh/002.mp3
- /Media/SD-P1/moh/003.mp3
- /Media/SD-P1/moh/001.mp3
- /Media/SD-P1/moh/002.mp3
- /Media/SD-P1/moh/003.mp3
- /Media/SD-P1/moh/004.mp3
- /Media/SD-P1/moh/005.mp3
- /Media/SD-P1/moh/006.mp3
- root@mylinkit:/tmp# madplay $(more mp3.list )
-
- example code:
- echo "sort the mp3 file and generate a mp3 list"
- find ./ -name "*.mp3"|sort>mp3.list
- /bin/echo "mp3.list:"
- more/mp3.list
- /bin/echo
- /bin/echo
- /bin/madplay$(more /mp3.list)
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2.17.6 madplay管道控制方式 FIFO
2.17.7 madplay音量控制
获得喇叭的最大音量/最小音量/当前音量，运算后保存回去。
- MIN_VOLUME=$(amixer cget numid=11,iface=MIXER,name='Speaker Playback Volume' | grep '; type' |sed 's/^.*min=//g' | sed 's/,.*$//g')
- MAX_VOLUME=$(amixer cget numid=11,iface=MIXER,name='Speaker Playback Volume' | grep '; type' |sed 's/^.*max=//g' | sed 's/,.*$//g')
- ALSA_VOLUME=$(amixer cget numid=11,iface=MIXER,name='Speaker Playback Volume' | grep ': values' |sed 's/^.*values=//g' | sed 's/,.*$//g')
- let MAX_VOLUME-=8
- if [ "$ALSA_VOLUME" -le "$MAX_VOLUME" ]
- then
- let ALSA_VOLUME+=8
- fi
- #echo $ALSA_VOLUME >/dev/console; echo $MAX_VOLUME >/dev/console
- amixer cset numid=11,iface=MIXER,name='Speaker Playback Volume' $ALSA_VOLUME
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2.17.8 参考文档：
讲解如何用按键控制madplay
http://wenku.baidu.com/link?url=aSt7QMxrFFHZngf7rN2lZu2R8tldvJdXnRSl93SCf1xldTvVFfQ_77dsWF3-nb9gYa3_LBDmJXTNLQQR09rCuUT-ycWgL-Z7V-BG3EH7fKW
Openwrt下 mplayer的配置详解
http://www.crystalradio.cn/thread-466848-1-1.html
mp3播放器控制程序
http://blog.sina.com.cn/s/blog_95268f5001016gnf.html
http://blog.csdn.net/zouzuohuo/article/details/7895917
2.18 swconfig
列出当前系统的存在的switch
- root@ipRec:/etc/config# swconfig list
- Found: switch0 - rt305x
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展示当前switch端口配置
- root@ipRec:/etc/config# swconfig dev rt305x show
- Global attributes:
- enable_vlan: 0
- alternate_vlan_disable: 0
- bc_storm_protect: 0
- led_frequency: 0
- Port 0:
- disable: 0
- doubletag: 1
- untag: 1
- led: 5
- lan: 1
- recv_bad: 0
- recv_good: 2479
- tr_bad: 0
- tr_good: 104
- pvid: 0
- link: port:0 link:up speed:100baseT full-duplex
- Port 1:
- disable: 0
- doubletag: 1
- untag: 1
- led: 5
- lan: 1
- recv_bad: 0
- recv_good: 0
- tr_bad: 0
- tr_good: 0
- pvid: 0
- link: port:1 link:down
- Port 2:
- disable: 0
- doubletag: 1
- untag: 1
- led: 5
- lan: 1
- recv_bad: 0
- recv_good: 0
- tr_bad: 0
- tr_good: 0
- pvid: 0
- link: port:2 link:down
- Port 3:
- disable: 0
- doubletag: 1
- untag: 1
- led: 5
- lan: 1
- recv_bad: 0
- recv_good: 0
- tr_bad: 0
- tr_good: 0
- pvid: 0
- link: port:3 link:down
- Port 4:
- disable: 0
- doubletag: 1
- untag: 1
- led: 5
- lan: 1
- recv_bad: 0
- recv_good: 0
- tr_bad: 0
- tr_good: 0
- pvid: 0
- link: port:4 link:down
- Port 5:
- disable: 1
- doubletag: 1
- untag: 1
- led: ???
- lan: 1
- recv_bad: 0
- recv_good: 0
- tr_bad: 0
- tr_good: 0
- pvid: 0
- link: port:5 link:down
- Port 6:
- disable: 0
- doubletag: 1
- untag: 1
- led: ???
- lan: ???
- recv_bad: ???
- recv_good: ???
- tr_bad: ???
- tr_good: ???
- pvid: 0
- link: port:6 link:up speed:1000baseT full-duplex
- VLAN 0:
- ports: 0 1 2 3 4 5 6
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- root@ipRec:/etc/config# ifconfig
- br-lan Link encap:Ethernet HWaddr 00:0C:43:E1:76:2A
- inet addr:192.168.100.1 Bcast:192.168.100.255 Mask:255.255.255.0
- inet6 addr: fe80::20c:43ff:fee1:762a/64 Scope:Link
- inet6 addr: fd83:d6c:cf85::1/60 Scope:Global
- UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
- RX packets:903 errors:0 dropped:0 overruns:0 frame:0
- TX packets:306 errors:0 dropped:0 overruns:0 carrier:0
- collisions:0 txqueuelen:0
- RX bytes:63543 (62.0 KiB) TX bytes:27616 (26.9 KiB)
-
- eth0 Link encap:Ethernet HWaddr 00:0C:43:E1:76:29
- UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
- RX packets:1130 errors:0 dropped:0 overruns:0 frame:0
- TX packets:132 errors:0 dropped:0 overruns:0 carrier:0
- collisions:0 txqueuelen:1000
- RX bytes:124403 (121.4 KiB) TX bytes:11965 (11.6 KiB)
- Interrupt:5
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- eth0.1 Link encap:Ethernet HWaddr 00:0C:43:E1:76:29
- inet6 addr: fe80::20c:43ff:fee1:7629/64 Scope:Link
- UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
- RX packets:0 errors:0 dropped:0 overruns:0 frame:0
- TX packets:9 errors:0 dropped:0 overruns:0 carrier:0
- collisions:0 txqueuelen:0
- RX bytes:0 (0.0 B) TX bytes:1931 (1.8 KiB)
-
- lo Link encap:Local Loopback
- inet addr:127.0.0.1 Mask:255.0.0.0
- inet6 addr: ::1/128 Scope:Host
- UP LOOPBACK RUNNING MTU:65536 Metric:1
- RX packets:8736 errors:0 dropped:0 overruns:0 frame:0
- TX packets:8736 errors:0 dropped:0 overruns:0 carrier:0
- collisions:0 txqueuelen:0
- RX bytes:594720 (580.7 KiB) TX bytes:594720 (580.7 KiB)
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2.19 网络配置
2.20 gpio debug
可以通过#cat /sys/kernel/debug/gpio命令查询当前按钮状态。lo,低电平，hi为高电平。
- root@mylinkit:/# cat /sys/kernel/debug/gpio
- GPIOs 0-31, platform/10000600.gpio, 10000600.gpio:
- gpio-11 (bootstrap ) out lo
- gpio-14 (BTN_0 ) in hi
- gpio-15 (BTN_1 ) in hi
- gpio-16 (BTN_2 ) in hi
- gpio-17 (BNT_3 ) in hi
- gpio-18 (BTN_4 ) in hi
- gpio-19 (S9 ) in hi
-
- GPIOs 32-63, platform/10000600.gpio, 10000600.gpio:
- gpio-38 (reset ) in hi
-
- GPIOs 64-95, platform/10000600.gpio, 10000600.gpio:
-
- GPIOs 127-127, platform/gpio-wifi, gpio-wifi:
- gpio-127 (mediatek:orange:wifi) out ?
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2.21 环境变量显示
环境变量的相关信息，参考linux鸟歌私房菜上，P304。
2.22 稍描wifi热点
# iwinfo ra0 scan
# time iwlist wlan0 scan | grep ESSID
- root@mylinkit:/tmp# iwinfo ra0 scan
- Cell 01 - Address: 6C:E8:73:AB:0C:96
- ESSID: "FAST_AB0C96"
- Mode: Master Channel: 1
- Signal: -256 dBm Quality: 10/100
- Encryption: WPA2 PSK (AES-OCB)
-
- Cell 02 - Address: C8:3A:35:29:F5:54
- ESSID: "wanghf"
- Mode: Master Channel: 1
- Signal: -256 dBm Quality: 7/100
- Encryption: WPA PSK (AES-OCB)
-
- Cell 03 - Address: 00:06:25:00:6E:72
- ESSID: "home"
- Mode: Master Channel: 6
- Signal: -256 dBm Quality: 81/100
- Encryption: WPA2 PSK (TKIP, AES-OCB)
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- Cell 04 - Address: 8C:21:0A:41:D3:64
- ESSID: "wf"
- Mode: Master Channel: 11
- Signal: -256 dBm Quality: 0/100
- Encryption: WPA2 PSK (AES-OCB)
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2.23 du 查询磁盘空间使用情况
du /
2.24 PID查询命令ps, pidof, pgrep
2.25 date
http://www.runoob.com/linux/linux-comm-date.html
http://www.2cto.com/os/201310/248416.html
http://www.firefoxbug.com/index.php/archives/2799/
http://www.cnblogs.com/peida/archive/2012/12/13/2815687.html
date +%Y/%m/%d
date +%H:%M
+%Y - year年
+%m - month月
+%d - day天
+%H - Hour时
+%M - Minute分
+%S - Second秒
+%s - 从 1970 年 1 月 1 日 00:00:00 UTC 到目前为止的秒数
%H : 小时(00..23)
%I : 小时(01..12)
%k : 小时(0..23)
%l : 小时(1..12)
%M : 分钟(00..59)
%p : 显示本地 AM 或 PM
%r : 直接显示时间 (12 小时制，格式为 hh:mm:ss [AP]M)
%s : 从 1970 年 1 月 1 日 00:00:00 UTC 到目前为止的秒数
%S : 秒(00..61)
%T : 直接显示时间 (24 小时制)
%X : 相当于 %H:%M:%S
%Z : 显示时区 %a : 星期几 (Sun..Sat)
%A : 星期几 (Sunday..Saturday)
%b : 月份 (Jan..Dec)
%B : 月份 (January..December)
%c : 直接显示日期与时间
%d : 日 (01..31)
%D : 直接显示日期 (mm/dd/yy)
%h : 同 %b
%j : 一年中的第几天 (001..366)
%m : 月份 (01..12)
%U : 一年中的第几周 (00..53) (以 Sunday 为一周的第一天的情形)
%w : 一周中的第几天 (0..6)
%W : 一年中的第几周 (00..53) (以 Monday 为一周的第一天的情形)
%x : 直接显示日期 (mm/dd/yy)
%y : 年份的最后两位数字 (00.99)
%Y : 完整年份 (0000..9999)
date指定格式输出
$ date +”%Y-%m-%d %H:%M:%S”
2014-11-21 23:59:37
转换指定日期为Unix时间戳：
$ date -d “2008-01-01 00:00:00” +%s
1199116800
- $ date -d 2008-01-01 +%s
- 1199116800
-
- $ date -d 20080101 +%s
- 1199116800
-
- 例外: 有一种场景date格式是连续的(没找到date命令怎么转换成unix)
-
- $ echo 20080101010101 | awk '{print substr($0,1,4)"-"substr($0,5,2)"-"substr($0,7,2)" "substr($0,9,2)":"substr($0,11,2)":"substr($0,13,2) }'
- 2008-01-01 01:01:01
-
- $ date -d "2008-01-01 01:01:01" +%s
- 1199120461
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root@mylinkit:/etc/config# date -help
date: invalid option – h
BusyBox v1.23.2 (2016-01-20 23:54:03 CST) multi-call binary.
Usage: date [OPTIONS] [+FMT] [TIME]
Display time (using +FMT), or set time
- [-s,--set] TIME Set time to TIME
- -u,--utc Work in UTC (don't convert to local time)
- -R,--rfc-2822 Output RFC-2822 compliant date string
- -I[SPEC] Output ISO-8601 compliant date string
- SPEC='date' (default) for date only,
- 'hours', 'minutes', or 'seconds' for date and
- time to the indicated precision
- -r,--reference FILE Display last modification time of FILE
- -d,--date TIME Display TIME, not 'now'
- -D FMT Use FMT for -d TIME conversion
- -k Set Kernel timezone from localtime and exit
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Recognized TIME formats:
hh:mm[:ss]
[YYYY.]MM.DD-hh:mm[:ss]
YYYY-MM-DD hh:mm[:ss]
[[[[[YY]YY]MM]DD]hh]mm[.ss]
2.26 grep,sed,cut
参考moh-scheduler文档
- # SD10022016&ED31012016&DW1111100&TS1015TE1730
- start_day=$(cat $config_file |sed 's/^.*SD//g'|cut -c -8)
- cut切除指定的字符
- cut -c 1-8 //切除第1到第8字符
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2.27 wait
https://zh.wikipedia.org/wiki/Wait_(%E5%91%BD%E4%BB%A4)
2.28 ubus
- root@mylinkit:~# ubus --help
- ubus: invalid option -- -
- Usage: ubus [<options>] <command> [arguments...]
- Options:
- -s <socket>: Set the unix domain socket to connect to
- -t <timeout>: Set the timeout (in seconds) for a command to complete
- -S: Use simplified output (for scripts)
- -v: More verbose output
-
- Commands:
- - list [<path>] List objects
- - call <path> <method> [<message>] Call an object method
- - listen [<path>...] Listen for events
- - send <type> [<message>] Send an event
- - wait_for <object> [<object>...] Wait for multiple objects to appear on ubus
-
-
- root@mylinkit:~# ubus list
- dhcp
- iwinfo
- log
- network
- network.device
- network.interface
- network.interface.lan
- network.interface.loopback
- network.interface.wan
- network.wireless
- rpc-sys
- service
- session
- system
- uci
-
- root@mylinkit:~# ubus list -v
- 'dhcp' @d5aa2d81
- "ipv4leases":{}
- "ipv6leases":{}
- 'iwinfo' @804494b9
- "devices":{}
- "info":{"device":"String"}
- "scan":{"device":"String"}
- "assoclist":{"device":"String","mac":"String"}
- "freqlist":{"device":"String"}
- "txpowerlist":{"device":"String"}
- "countrylist":{"device":"String"}
- "phyname":{"section":"String"}
- 'log' @e7e97da6
- "read":{"lines":"Integer"}
- "write":{"event":"String"}
- 'network' @06d3dcba
- "restart":{}
- "reload":{}
- "add_host_route":{"target":"String","v6":"Boolean","interface":"String"}
- "get_proto_handlers":{}
- "add_dynamic":{"name":"String"}
- 'network.device' @9b47eb98
- "status":{"name":"String"}
- "set_alias":{"alias":"Array","device":"String"}
- "set_state":{"name":"String","defer":"Boolean"}
- 'network.interface' @c806e5d7
- "up":{}
- "down":{}
- "status":{}
- "prepare":{}
- "dump":{}
- "add_device":{"name":"String","link-ext":"Boolean"}
- "remove_device":{"name":"String","link-ext":"Boolean"}
- "notify_proto":{}
- "remove":{}
- "set_data":{}
- 'network.interface.lan' @da711a3b
- "up":{}
- "down":{}
- "status":{}
- "prepare":{}
- "dump":{}
- "add_device":{"name":"String","link-ext":"Boolean"}
- "remove_device":{"name":"String","link-ext":"Boolean"}
- "notify_proto":{}
- "remove":{}
- "set_data":{}
- 'network.interface.loopback' @eaf974e8
- "up":{}
- "down":{}
- "status":{}
- "prepare":{}
- "dump":{}
- "add_device":{"name":"String","link-ext":"Boolean"}
- "remove_device":{"name":"String","link-ext":"Boolean"}
- "notify_proto":{}
- "remove":{}
- "set_data":{}
- 'network.interface.wan' @eff0e141
- "up":{}
- "down":{}
- "status":{}
- "prepare":{}
- "dump":{}
- "add_device":{"name":"String","link-ext":"Boolean"}
- "remove_device":{"name":"String","link-ext":"Boolean"}
- "notify_proto":{}
- "remove":{}
- "set_data":{}
- 'network.wireless' @a8161143
- "up":{}
- "down":{}
- "status":{}
- "notify":{}
- "get_validate":{}
- 'rpc-sys' @dd844b8f
- "password_set":{"user":"String","password":"String"}
- "upgrade_test":{}
- "upgrade_start":{"keep":"Boolean"}
- "upgrade_clean":{}
- "factory":{}
- "reboot":{}
- 'service' @1312b281
- "set":{"name":"String","script":"String","instances":"Table","triggers":"Array","validate":"Array"}
- "add":{"name":"String","script":"String","instances":"Table","triggers":"Array","validate":"Array"}
- "list":{"name":"String","verbose":"Boolean"}
- "delete":{"name":"String","instance":"String"}
- "update_start":{"name":"String"}
- "update_complete":{"name":"String"}
- "event":{"type":"String","data":"Table"}
- "validate":{"package":"String","type":"String","service":"String"}
- "get_data":{"name":"String","instance":"String","type":"String"}
- 'session' @4417ac78
- "create":{"timeout":"Integer"}
- "list":{"ubus_rpc_session":"String"}
- "grant":{"ubus_rpc_session":"String","scope":"String","objects":"Array"}
- "revoke":{"ubus_rpc_session":"String","scope":"String","objects":"Array"}
- "access":{"ubus_rpc_session":"String","scope":"String","object":"String","function":"String"}
- "set":{"ubus_rpc_session":"String","values":"Table"}
- "get":{"ubus_rpc_session":"String","keys":"Array"}
- "unset":{"ubus_rpc_session":"String","keys":"Array"}
- "destroy":{"ubus_rpc_session":"String"}
- "login":{"username":"String","password":"String","timeout":"Integer"}
- 'system' @5bc7fd25
- "board":{}
- "info":{}
- "upgrade":{}
- "watchdog":{"frequency":"Integer","timeout":"Integer","stop":"Boolean"}
- "signal":{"pid":"Integer","signum":"Integer"}
- "nandupgrade":{"path":"String"}
- 'uci' @2fd66254
- "configs":{}
- "get":{"config":"String","section":"String","option":"String","type":"String","match":"Table","ubus_rpc_session":"String"}
- "state":{"config":"String","section":"String","option":"String","type":"String","match":"Table","ubus_rpc_session":"String"}
- "add":{"config":"String","type":"String","name":"String","values":"Table","ubus_rpc_session":"String"}
- "set":{"config":"String","section":"String","type":"String","match":"Table","values":"Table","ubus_rpc_session":"String"}
- "delete":{"config":"String","section":"String","type":"String","match":"Table","option":"String","options":"Array","ubus_rpc_session":"String"}
- "rename":{"config":"String","section":"String","option":"String","name":"String","ubus_rpc_session":"String"}
- "order":{"config":"String","sections":"Array","ubus_rpc_session":"String"}
- "changes":{"config":"String","ubus_rpc_session":"String"}
- "revert":{"config":"String","ubus_rpc_session":"String"}
- "commit":{"config":"String","ubus_rpc_session":"String"}
- "apply":{"rollback":"Boolean","timeout":"Integer","ubus_rpc_session":"String"}
- "confirm":{"ubus_rpc_session":"String"}
- "rollback":{"ubus_rpc_session":"String"}
- "reload_config":{}
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3. openwrt application
3.1 opkg
3.2 date
- root@mylinkit:/etc/config# date -help
- date: invalid option -- h
- BusyBox v1.23.2 (2016-01-20 23:54:03 CST) multi-call binary.
-
- Usage: date [OPTIONS] [+FMT] [TIME]
-
- Display time (using +FMT), or set time
-
- [-s,--set] TIME Set time to TIME
- -u,--utc Work in UTC (don't convert to local time)
- -R,--rfc-2822 Output RFC-2822 compliant date string
- -I[SPEC] Output ISO-8601 compliant date string
- SPEC='date' (default) for date only,
- 'hours', 'minutes', or 'seconds' for date and
- time to the indicated precision
- -r,--reference FILE Display last modification time of FILE
- -d,--date TIME Display TIME, not 'now'
- -D FMT Use FMT for -d TIME conversion
- -k Set Kernel timezone from localtime and exit
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- Recognized TIME formats:
- hh:mm[:ss]
- [YYYY.]MM.DD-hh:mm[:ss]
- YYYY-MM-DD hh:mm[:ss]
- [[[[[YY]YY]MM]DD]hh]mm[.ss]
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3.3 稍描wifi热点
- # iwinfo ra0 scan
- # time iwlist wlan0 scan | grep ESSID
-
- root@mylinkit:/tmp# iwinfo ra0 scan
- Cell 01 - Address: 6C:E8:73:AB:0C:96
- ESSID: "FAST_AB0C96"
- Mode: Master Channel: 1
- Signal: -256 dBm Quality: 10/100
- Encryption: WPA2 PSK (AES-OCB)
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- Cell 02 - Address: C8:3A:35:29:F5:54
- ESSID: "wanghf"
- Mode: Master Channel: 1
- Signal: -256 dBm Quality: 7/100
- Encryption: WPA PSK (AES-OCB)
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- Cell 03 - Address: 00:06:25:00:6E:72
- ESSID: "home"
- Mode: Master Channel: 6
- Signal: -256 dBm Quality: 81/100
- Encryption: WPA2 PSK (TKIP, AES-OCB)
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- Cell 04 - Address: 8C:21:0A:41:D3:64
- ESSID: "wf"
- Mode: Master Channel: 11
- Signal: -256 dBm Quality: 0/100
- Encryption: WPA2 PSK (AES-OCB)
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3.4 alsamixer,amixer 音量调节
- alsamixer是文本方式下的图形命令
- amixer是文本方式下的文本命令
amixer
- Simple mixer control 'Headphone',0
- Capabilities: pvolume
- Playback channels: Front Left - Front Right
- Limits: Playback 0 - 127
- Mono:
- Front Left: Playback 121 [95%] [0.00dB]
- Front Right: Playback 121 [95%] [0.00dB]
- Simple mixer control 'Headphone Playback ZC',0
- Capabilities: pswitch
- Playback channels: Front Left - Front Right
- Mono:
- Front Left: Playback [on]
- Front Right: Playback [on]
- Simple mixer control 'Speaker',0
- Capabilities: pvolume
- Playback channels: Front Left - Front Right
- Limits: Playback 0 - 127
- Mono:
- Front Left: Playback 121 [95%] [0.00dB]
- Front Right: Playback 121 [95%] [0.00dB]
- Simple mixer control 'Speaker AC',0
- Capabilities: volume volume-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 5
- Mono: 4 [80%]
- Simple mixer control 'Speaker DC',0
- Capabilities: volume volume-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 5
- Mono: 5 [100%]
- Simple mixer control 'Speaker Playback ZC',0
- Capabilities: pswitch
- Playback channels: Front Left - Front Right
- Mono:
- Front Left: Playback [off]
- Front Right: Playback [off]
- Simple mixer control 'PCM Playback -6dB',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [off]
- Simple mixer control 'Mono Output Mixer Left',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [on]
- Simple mixer control 'Mono Output Mixer Right',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [on]
- Simple mixer control 'Playback',0
- Capabilities: volume
- Playback channels: Front Left - Front Right
- Capture channels: Front Left - Front Right
- Limits: 0 - 255
- Front Left: 243 [95%] [-5.50dB]
- Front Right: 243 [95%] [-5.50dB]
- Simple mixer control 'Capture',0
- Capabilities: cvolume cswitch
- Capture channels: Front Left - Front Right
- Limits: Capture 0 - 63
- Front Left: Capture 43 [68%] [-75.50dB] [off]
- Front Right: Capture 43 [68%] [-75.50dB] [off]
- Simple mixer control '3D',0
- Capabilities: volume volume-joined pswitch pswitch-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 15
- Mono: 0 [0%] Playback [off]
- Simple mixer control '3D Filter Lower Cut-Off',0
- Capabilities: enum
- Items: 'Low' 'High'
- Item0: 'Low'
- Simple mixer control '3D Filter Upper Cut-Off',0
- Capabilities: enum
- Items: 'High' 'Low'
- Item0: 'High'
- Simple mixer control 'ADC High Pass Filter',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [off]
- Simple mixer control 'ADC PCM',0
- Capabilities: cvolume
- Capture channels: Front Left - Front Right
- Limits: Capture 0 - 255
- Front Left: Capture 206 [81%] [6.00dB]
- Front Right: Capture 206 [81%] [6.00dB]
- Simple mixer control 'ADC Polarity',0
- Capabilities: enum
- Items: 'No Inversion' 'Left Inverted' 'Right Inverted' 'Stereo Inversion'
- Item0: 'No Inversion'
- Simple mixer control 'ALC Attack',0
- Capabilities: volume volume-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 15
- Mono: 2 [13%]
- Simple mixer control 'ALC Decay',0
- Capabilities: volume volume-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 15
- Mono: 3 [20%]
- Simple mixer control 'ALC Function',0
- Capabilities: enum
- Items: 'Off' 'Right' 'Left' 'Stereo'
- Item0: 'Off'
- Simple mixer control 'ALC Hold Time',0
- Capabilities: volume volume-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 15
- Mono: 0 [0%]
- Simple mixer control 'ALC Max Gain',0
- Capabilities: volume volume-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 7
- Mono: 7 [100%]
- Simple mixer control 'ALC Min Gain',0
- Capabilities: volume volume-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 7
- Mono: 0 [0%]
- Simple mixer control 'ALC Mode',0
- Capabilities: enum
- Items: 'ALC' 'Limiter'
- Item0: 'ALC'
- Simple mixer control 'ALC Target',0
- Capabilities: volume volume-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 15
- Mono: 4 [27%]
- Simple mixer control 'DAC Deemphasis',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [off]
- Simple mixer control 'DAC Polarity',0
- Capabilities: enum
- Items: 'No Inversion' 'Left Inverted' 'Right Inverted' 'Stereo Inversion'
- Item0: 'No Inversion'
- Simple mixer control 'Left Boost Mixer LINPUT1',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [on]
- Simple mixer control 'Left Boost Mixer LINPUT2',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [on]
- Simple mixer control 'Left Boost Mixer LINPUT3',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [off]
- Simple mixer control 'Left Input Boost Mixer LINPUT2',0
- Capabilities: volume volume-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 7
- Mono: 0 [0%] [-99999.99dB]
- Simple mixer control 'Left Input Boost Mixer LINPUT3',0
- Capabilities: volume volume-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 7
- Mono: 0 [0%] [-99999.99dB]
- Simple mixer control 'Left Input Mixer Boost',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [on]
- Simple mixer control 'Left Output Mixer Boost Bypass',0
- Capabilities: volume volume-joined pswitch pswitch-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 7
- Mono: 2 [29%] [-15.00dB] Playback [off]
- Simple mixer control 'Left Output Mixer LINPUT3',0
- Capabilities: volume volume-joined pswitch pswitch-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 7
- Mono: 7 [100%] [0.00dB] Playback [off]
- Simple mixer control 'Left Output Mixer PCM',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [on]
- Simple mixer control 'Noise Gate',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [off]
- Simple mixer control 'Noise Gate Threshold',0
- Capabilities: volume volume-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 31
- Mono: 0 [0%]
- Simple mixer control 'Right Boost Mixer RINPUT1',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [on]
- Simple mixer control 'Right Boost Mixer RINPUT2',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [on]
- Simple mixer control 'Right Boost Mixer RINPUT3',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [off]
- Simple mixer control 'Right Input Boost Mixer RINPUT2',0
- Capabilities: volume volume-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 7
- Mono: 0 [0%] [-99999.99dB]
- Simple mixer control 'Right Input Boost Mixer RINPUT3',0
- Capabilities: volume volume-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 7
- Mono: 0 [0%] [-99999.99dB]
- Simple mixer control 'Right Input Mixer Boost',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [on]
- Simple mixer control 'Right Output Mixer Boost Bypass',0
- Capabilities: volume volume-joined pswitch pswitch-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 7
- Mono: 2 [29%] [-15.00dB] Playback [off]
- Simple mixer control 'Right Output Mixer PCM',0
- Capabilities: pswitch pswitch-joined
- Playback channels: Mono
- Mono: Playback [on]
- Simple mixer control 'Right Output Mixer RINPUT3',0
- Capabilities: volume volume-joined pswitch pswitch-joined
- Playback channels: Mono
- Capture channels: Mono
- Limits: 0 - 7
- Mono: 7 [100%] [0.00dB] Playback [off]
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amixer controls
- numid=10,iface=MIXER,name='Headphone Playback ZC Switch'
- numid=9,iface=MIXER,name='Headphone Playback Volume'
- numid=15,iface=MIXER,name='PCM Playback -6dB Switch'
- numid=39,iface=MIXER,name='Mono Output Mixer Left Switch'
- numid=40,iface=MIXER,name='Mono Output Mixer Right Switch'
- numid=17,iface=MIXER,name='ADC High Pass Filter Switch'
- numid=34,iface=MIXER,name='ADC PCM Capture Volume'
- numid=16,iface=MIXER,name='ADC Polarity'
- numid=2,iface=MIXER,name='Capture Volume ZC Switch'
- numid=3,iface=MIXER,name='Capture Switch'
- numid=1,iface=MIXER,name='Capture Volume'
- numid=8,iface=MIXER,name='Playback Volume'
- numid=21,iface=MIXER,name='3D Filter Lower Cut-Off'
- numid=20,iface=MIXER,name='3D Filter Upper Cut-Off'
- numid=23,iface=MIXER,name='3D Switch'
- numid=22,iface=MIXER,name='3D Volume'
- numid=31,iface=MIXER,name='ALC Attack'
- numid=30,iface=MIXER,name='ALC Decay'
- numid=24,iface=MIXER,name='ALC Function'
- numid=28,iface=MIXER,name='ALC Hold Time'
- numid=25,iface=MIXER,name='ALC Max Gain'
- numid=27,iface=MIXER,name='ALC Min Gain'
- numid=29,iface=MIXER,name='ALC Mode'
- numid=26,iface=MIXER,name='ALC Target'
- numid=19,iface=MIXER,name='DAC Deemphasis Switch'
- numid=18,iface=MIXER,name='DAC Polarity'
- numid=54,iface=MIXER,name='Left Boost Mixer LINPUT1 Switch'
- numid=52,iface=MIXER,name='Left Boost Mixer LINPUT2 Switch'
- numid=53,iface=MIXER,name='Left Boost Mixer LINPUT3 Switch'
- numid=7,iface=MIXER,name='Left Input Boost Mixer LINPUT2 Volume'
- numid=6,iface=MIXER,name='Left Input Boost Mixer LINPUT3 Volume'
- numid=48,iface=MIXER,name='Left Input Mixer Boost Switch'
- numid=46,iface=MIXER,name='Left Output Mixer Boost Bypass Switch'
- numid=35,iface=MIXER,name='Left Output Mixer Boost Bypass Volume'
- numid=45,iface=MIXER,name='Left Output Mixer LINPUT3 Switch'
- numid=36,iface=MIXER,name='Left Output Mixer LINPUT3 Volume'
- numid=44,iface=MIXER,name='Left Output Mixer PCM Playback Switch'
- numid=33,iface=MIXER,name='Noise Gate Switch'
- numid=32,iface=MIXER,name='Noise Gate Threshold'
- numid=51,iface=MIXER,name='Right Boost Mixer RINPUT1 Switch'
- numid=49,iface=MIXER,name='Right Boost Mixer RINPUT2 Switch'
- numid=50,iface=MIXER,name='Right Boost Mixer RINPUT3 Switch'
- numid=5,iface=MIXER,name='Right Input Boost Mixer RINPUT2 Volume'
- numid=4,iface=MIXER,name='Right Input Boost Mixer RINPUT3 Volume'
- numid=47,iface=MIXER,name='Right Input Mixer Boost Switch'
- numid=43,iface=MIXER,name='Right Output Mixer Boost Bypass Switch'
- numid=37,iface=MIXER,name='Right Output Mixer Boost Bypass Volume'
- numid=41,iface=MIXER,name='Right Output Mixer PCM Playback Switch'
- numid=42,iface=MIXER,name='Right Output Mixer RINPUT3 Switch'
- numid=38,iface=MIXER,name='Right Output Mixer RINPUT3 Volume'
- numid=14,iface=MIXER,name='Speaker AC Volume'
- numid=13,iface=MIXER,name='Speaker DC Volume'
- numid=11,iface=MIXER,name='Speaker Playback Volume'
- numid=12,iface=MIXER,name='Speaker Playback ZC Switch'
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- numid=8,iface=MIXER,name='Playback Volume'
- numid=9,iface=MIXER,name='Headphone Playback Volume'
- numid=11,iface=MIXER,name='Speaker Playback Volume'
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sed参考文档：Linux鸟歌的私房菜 P359
获得当前喇叭音量值
# amixer cget numid=11,iface=MIXER,name='Speaker Playback Volume' | grep ': values' |sed 's/^.*values=//g' | sed 's/,.*$//g'
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获得耳机音量值
# amixer cget numid=9,iface=MIXER,name='Headphone Playback Volume' | grep ': values' |sed 's/^.*values=//g' | sed 's/,.*$//g'
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获得播放音量值
# amixer cget numid=8,iface=MIXER,name='Playback Volume' | grep ': values' |sed 's/^.*values=//g' | sed 's/,.*$//g'
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3.5 top
3.6 ps
- Mem: 41608K used, 84840K free, 320K shrd, 4332K buff, 11960K cached
- CPU: 0% usr 0% sys 0% nic 99% idle 0% io 0% irq 0% sirq
- Load average: 0.00 0.01 0.05 2/43 1864
- PID PPID USER STAT VSZ %VSZ %CPU COMMAND
- 1581 1191 root S 1240 1% 0% /usr/sbin/dropbear -F -P /var/run/dro
- 1331 1 root S 1016 1% 0% /sbin/mountd -f
- 1299 1 root S 3188 3% 0% /usr/sbin/nmbd -F
- 1298 1 root S 3096 2% 0% /usr/sbin/smbd -F
- 1088 1 root S 1824 1% 0% /sbin/rpcd
- 1306 1 nobody S 1768 1% 0% avahi-daemon: running [mylinkit.local
- 1267 1 root S 1640 1% 0% /usr/sbin/uhttpd -f -h /www -r mylink
- 1122 1 root S 1600 1% 0% /sbin/netifd
- 1582 1581 root S 1496 1% 0% -ash
- 1401 1 root S 1488 1% 0% /usr/sbin/ntpd -n -S /usr/sbin/ntpd-h
- 1602 1601 root S 1488 1% 0% -ash
- 1864 1582 root R 1488 1% 0% top
- 1504 1122 root S 1484 1% 0% udhcpc -p /var/run/udhcpc-apcli0.pid
- 1 0 root S 1436 1% 0% /sbin/procd
- 1601 1191 root S 1240 1% 0% /usr/sbin/dropbear -F -P /var/run/dro
- 1160 1 root S 1192 1% 0% /usr/sbin/odhcpd
- 1191 1 root S 1148 1% 0% /usr/sbin/dropbear -F -P /var/run/dro
- 1079 1 root S 1056 1% 0% /sbin/logd -S 16
- 1572 1 nobody S 992 1% 0% /usr/sbin/dnsmasq -C /var/etc/dnsmasq
- 430 1 root S 904 1% 0% /sbin/ubusd
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3.7 iwpriv
- root@mylinkit:/tmp# iwpriv -help
- Usage: iwpriv interface [private-command [private-arguments]]
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- root@mylinkit:/tmp# iwpriv
- eth0.1 no private ioctls.
-
- lo no private ioctls.
-
- ra0 Available private ioctls :
- set (8BE2) : set 1536 char & get 0
- show (8BF1) : set 1024 char & get 0
- get_site_survey (8BED) : set 0 & get 1024 char
- set_wsc_oob (8BF9) : set 1024 char & get 1024 char
- get_mac_table (8BEF) : set 1024 char & get 1024 char
- e2p (8BE7) : set 1024 char & get 1024 char
- bbp (8BE3) : set 1024 char & get 1024 char
- mac (8BE5) : set 1024 char & get 1024 char
- rf (8BF3) : set 1024 char & get 1024 char
- get_wsc_profile (8BF2) : set 1024 char & get 1024 char
- get_ba_table (8BF6) : set 1024 char & get 1024 char
- stat (8BE9) : set 1024 char & get 1024 char
- apcli1 Available private ioctls :
- set (8BE2) : set 1536 char & get 0
- show (8BF1) : set 1024 char & get 0
- get_site_survey (8BED) : set 0 & get 1024 char
- set_wsc_oob (8BF9) : set 1024 char & get 1024 char
- get_mac_table (8BEF) : set 1024 char & get 1024 char
- e2p (8BE7) : set 1024 char & get 1024 char
- bbp (8BE3) : set 1024 char & get 1024 char
- mac (8BE5) : set 1024 char & get 1024 char
- rf (8BF3) : set 1024 char & get 1024 char
- get_wsc_profile (8BF2) : set 1024 char & get 1024 char
- get_ba_table (8BF6) : set 1024 char & get 1024 char
- stat (8BE9) : set 1024 char & get 1024 char
- eth0 no private ioctls.
- apcli0 Available private ioctls :
- set (8BE2) : set 1536 char & get 0
- show (8BF1) : set 1024 char & get 0
- get_site_survey (8BED) : set 0 & get 1024 char
- set_wsc_oob (8BF9) : set 1024 char & get 1024 char
- get_mac_table (8BEF) : set 1024 char & get 1024 char
- e2p (8BE7) : set 1024 char & get 1024 char
- bbp (8BE3) : set 1024 char & get 1024 char
- mac (8BE5) : set 1024 char & get 1024 char
- rf (8BF3) : set 1024 char & get 1024 char
- get_wsc_profile (8BF2) : set 1024 char & get 1024 char
- get_ba_table (8BF6) : set 1024 char & get 1024 char
- stat (8BE9) : set 1024 char & get 1024 char
- br-lan no private ioctls.
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/lib/netifd/wireless/ralink.sh
* iwpriv ra0
* set
* Channel
* NoForwarding
* NoForwardingBTNBSSID
* NoForwardingMBCast
* HideSSID
* RADIUS_Server
* RADIUS_Port
* RADIUS_Key
* own_ip_addr
* EAPifname
* PreAuthIfname
* AuthMode
* EncrypType
* IEEE8021X
* “SSID={key}
* DefaultKeyID=2
* AuthMode=WEPAUTO
* EncrypType=WEP
* IEEE8021X=0
* DefaultKeyID=wsc_mode
* WscConfStatus=2
* WscMode=2
* ACLClearAll=1
* ACLAddEntry=”$m”
* AccessPolicy=0,1,2
# iwpriv ra0 set Channel=6
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3.8 miniDLNA
https://wiki.openwrt.org/doc/uci/minidlna
https://github.com/xiongyihui/LinkIt_Smart_7688
Openwrt下安装miniDLNA
- root@OpenWrt:~# opkg update
- root@OpenWrt:~# opkg install minidlna
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- root@mylinkit:~# opkg install minidlna
- Installing minidlna (1.1.4-2) to root...
- Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7688/packages/packages/minidlna_1.1.4-2_ramips_24kec.ipk.
- Installing libexif (0.6.21-1) to root...
- Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7688/packages/packages/libexif_0.6.21-1_ramips_24kec.ipk.
- Installing libffmpeg-mini (2.6.2-1) to root...
- Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7688/packages/packages/libffmpeg-mini_2.6.2-1_ramips_24kec.ipk.
- Installing libflac (1.3.1-1) to root...
- Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7688/packages/packages/libflac_1.3.1-1_ramips_24kec.ipk.
- Installing libvorbis (1.3.5-1) to root...
- Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7688/packages/packages/libvorbis_1.3.5-1_ramips_24kec.ipk.
- Installing libogg (1.3.2-2) to root...
- Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7688/packages/packages/libogg_1.3.2-2_ramips_24kec.ipk.
- Installing libuuid (2.25.2-4) to root...
- Downloading http://downloads.openwrt.org/chaos_calmer/15.05.1/ramips/mt7688/packages/base/libuuid_2.25.2-4_ramips_24kec.ipk.
- Configuring libogg.
- Configuring libexif.
- Configuring libflac.
- Configuring libvorbis.
- Configuring libuuid.
- Configuring libffmpeg-mini.
- Configuring minidlna.
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Ubuntu下安装miniDLNAhttp://blog.csdn.net/wanruirui/article/details/14222283
1，安装
$ sudo apt-get install minidlna
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2，修改配置
$ sudo vi /etc/minidlna.conf
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3、你可以选择让minidlna随机启动
$ sudo update-rc.d minidlna defaults
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4、启动minidlna服务
$ sudo service minidlna start
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5、当你修改配置文件及媒体资源更新时，需要强制刷新，以便minidlna将最新的媒体文件进行索引
sudo service minidlna force-reload
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6、查看资源个数
http://192.168.1.106:8200/
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7、取消minidlna的开机自动启动
sudo update-rc.d -f minidlna remove
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8、停止minidlna服务
sudo service minidlna stop
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9、停止minidlna所有进程
sudo killall minidlna
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10、卸载minidlna
sudo apt-get remove --purge minidlna
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3.9 which/find
which用来查找可执行文件，find用来查找文件。另外，还有whereis,locate，不过在OpenWrt中默认没有这两个命令。
- root@mylinkit:/# which which
- /usr/bin/which
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3.10 网络工具 //net-tools, iproute2, vlan, bridge-utils, wireless-tools
3.11 huawei 4g
- kmod-usb-serial
- kmod-usb-serial-option
- kmod-usb-serial-wwan
-
- usb-modeswitch
- kmod-mii
- kmod-usb-net
- kmod-usb-wdm
- kmod-usb-net-qmi-wwan
- usb-modeswitch-data
- uqmi
-
- kmod-usb-net-huawei-cdc-ncm
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uart
开两个shell,一端:cat /dev/ttyS0,另一端: echo 1111 >/dev/ttyS0
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4. linux application
在ubuntu环境下，需要安装下面的安装包用来编译openwrt。
sudo apt-get install git g++ make libncurses5-dev subversion libssl-dev gawk libxml-parser-perl unzip wget python xz-utils
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4.1 openssh-service
SSH服务是一个非常好的服务，采用加密方式进行文件传输。该服务可以替代telnet的明文连接，并且可以实现文件加密传输(scp)。
4.2 vnc server
在ubuntu12系统环境下
vnc server安装
$ sudo apt-get install vnc4server
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设置vnc Password
启动VNC Server
$ vncserver
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关闭一个VNC窗口
$ vncserver -kill :1
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安装gnome
apt-get install gnome-panel gnome-settings-daemon metacity nautilus gnome-terminal
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4.3 git
https://git-scm.com/book/zh/v2/Git-%E5%9F%BA%E7%A1%80-%E6%92%A4%E6%B6%88%E6%93%8D%E4%BD%9C
-
git command**
-
git clone
- git reset HEAD^
- git reset HEAD^^
- git reset HEAD~3/1
- git reset -hard origin/master // 回退到远程最新版本
- git remote add github https://github.com/xxxx/openwrt.git
- git remote -v
- git checkout -b huang
- git branch
- git pull github huang:master // 从远程github拉出huang分支到本地的master
- git push github huang:master // 上传本地的huang分支到github远程的master
- git merge
基础命令：撤销没有提交修改
$ git checkout -- config-3.18
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分支操作：合并master到分支
- git pull origon master // 从远程服务器更新master分支
- git checkout IR077H // 切换到IR077H分支
- git merge Master // 合并Master分支到当前分支
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库：创建本地 git 库 example.git
- $ cd /opt/git
- $ mkdir example.git
- $ cd example.git
- $ git --bare init
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库：clone本地git库
$ git clone /opt/git/example.git
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库：clone ssh远程库
$ git clone git@192.168.1.1:/opt/git/example.git
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库；clone github库
# git clone https://github.com/MediaTek-Labs/linkit-smart-7688-feed.git
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4.3.7 从服务器更新本地文档
- $ git pull origin master:master
- $ git pull origin IR077H:IR077H
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分支管理
创建分支并切换到分支
$ git checkout -b moh
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分支切换
$ git checkout moh
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分支合并 //合并master到moh分支
- $ git checkout moh
- $ git merge master
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#
图形界面GitK
$ gitk
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gitk是linux下git自带的一个图形显示工具。可以使用这个工具在图形模式下察看详细的log文件等信息。
4.4 串口通讯
screen
ubuntu系统中使用如何使用RS232通讯，在系统中，可以采用screen命令。
- $ ls /dev/ttyUSB*
- $ sudo apt-get install screen
- $ sudo screen /dev/ttyUSB0 57600
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4.5 tftp server
在openwrt系统更新环节中，有多种方法可以实现firmware更新。tftp方式就是一个方法。我们可以在ubuntu中创建一个tftp server，这样uboot就可以通过网线直接更新firmware了。这是一个非常简单的方式。
- sudo apt-get install tftpd-hpa
- config /etc/default/tftpd-hpa
- start server /etc/init.d/tftpd-hpa start or start tftp-hpa
- stop server /etc/init.d/tftpd-hpa stop or stop tftp-hpa
4.5.1 安装下面的安装包
$ sudo apt-get install xinetd tftpd tftp
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4.5.2 创建/etc/xinetd.d/tftp并且put this entry
- service tftp
- {
- protocol = udp
- port = 69
- socket_type = dgram
- wait = yes
- user = nobody
- server = /usr/sbin/in.tftpd
- server_args = /tftpboot
- disable = no
- }
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4.6 scp(secure copy)安全文件传输
Secure copy or SCP is a means of securely transferring computer files between a local host and a remote host or between two remote hosts. It is based on the Secure Shell (SSH) protocol.[1]
scp ~/.ssh/id_dsa.pub root@192.168.1.1:/tmp
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4.7 重定向 0，1，2 >&1,>&2
0 是 < 的默认值，因此 < 与 0<是一样的;同理，> 与 1> 是一样的
- 标准输入(stdin):代码为0，使用<或<<；
- 标准输入(stdout):代码为1，使用>或>>；
- 标准错误输出(stderr)：代码为2，使用2>或2>>。
0:Standard Input(STDIN)
1:Standard Output(STDOUT)
2:Standard Error Output(STDERR)
http://blog.csdn.net/thirstyblue/article/details/7974300
http://www.cnblogs.com/Centaurus/archive/2013/05/25/3098256.html
- $ls /dev 1>filename //把命令的标准输出重新定向到一个文件filename
- $ls /dev >>filename //把输出追加到filename文件的末尾
- $ls -qw /dev 2>filename //把标准错误重新定向到文件
- $ls /dev &>filename //把标准输出和错误都定向到文件
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4.8垃圾黑洞 /dev/null
$find /home -name .basehrc 2> /dev/null
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4.8 yes 命令
4.9 du 查询磁盘空间使用情况
# du /
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4.10 PID查询命令ps, pidof, pgrep
4.11 串口通讯 uart
得到串口数据
# cat /dev/ttyUSB0
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$screen /dev/cu.usbserial-XXXXXXXX 57600
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4.12 screen 串口命令
ubuntu@ubuntu-System-Name:~$ sudo screen /dev/ttyUSB1 57600
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- ubuntu@ubuntu-System-Name:~$ screen
- -D -RR Do whatever is needed to get a screen session.
- -e xy Change command characters.
- -f Flow control on, -fn = off, -fa = auto.
- -h lines Set the size of the scrollback history buffer.
- -i Interrupt output sooner when flow control is on.
- -l Login mode on (update /var/run/utmp), -ln = off.
- -list or -ls. Do nothing, just list our SockDir.
- -L Turn on output logging.
- -m ignore $STY variable, do create a new screen session.
- -O Choose optimal output rather than exact vt100 emulation.
- -p window Preselect the named window if it exists.
- -q Quiet startup. Exits with non-zero return code if unsuccessful.
- -r Reattach to a detached screen process.
- -R Reattach if possible, otherwise start a new session.
- -s shell Shell to execute rather than $SHELL.
- -S sockname Name this session <pid>.sockname instead of <pid>.<tty>.<host>.
- -t title Set title. (window's name).
- -T term Use term as $TERM for windows, rather than "screen".
- -U Tell screen to use UTF-8 encoding.
- -v Print "Screen version 4.00.03jw4 (FAU) 2-May-06".
- -wipe Do nothing, just clean up SockDir.
- -x Attach to a not detached screen. (Multi display mode).
- -X Execute <cmd> as a screen command in the specified session.
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4.13 后台运行命令
在linux中，让程序在后台运行的话，其实很简单。只要在运行程序的时候，在后面增加&符号就可以了。
5. Uboot
5.1 编译Uboot
- $git clone https://github.com/MediaTek-Labs/linkit-smart-7688-uboot.git
- $cd linkit-smart-7688-uboot
- $sudo tar jxf buildroot-gcc342.tar.bz2 -C /opt/
- $make
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5.2 修改uboot串口号
修改文件linkit-smart-7688-uboot\board\rt2880\serial.h
line21: #define CFG_RT2880_CONSOLE RT2880_UART3
5.3 uboot环境变量打印/修改(printenv,setenv,saveenv)
- MT7628 # printenv
- bootcmd=tftp
- bootdelay=1
- baudrate=57600
- ethaddr="00:AA:BB:CC:DD:10" //
- ipaddr=10.10.10.123 // 设备IP
- serverip=10.10.10.3 // 服务器IP
- stdin=serial
- stdout=serial
- stderr=serial
-
- Environment size: 149/4092 bytes
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- MT7628 # setenv ipaddr 192.168.1.120
- MT7628 # setenv serverip 192.168.1.116
- MT7628 # saveenv
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5.4 linkit u-boot特有烧录功能
5.4.1 uboot更新uboot-env环境变量
a. 在U盘中创建lks7688.cfg文件
- $cat lks7688.cfg
- wifi_ssid=moh_app
- wifi_key=12345678
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b. 插入u盘到开发板usb端口，按下wifi按钮，复位板子。等待wifi指示灯亮后，松开wifi按钮。uboot烧录配置到uboot-env
5.4.2 uboot更新固件
a.烧录lks7688.img到U盘
b.插入u盘，按下wifi按钮，复位板子，等待大约5秒（wifi指示灯亮然后灭掉），松开wifi按钮，uboot开始烧录firmware
5.4.3 uboot更新uboot
a. 复制lks7688.ldr到U盘
b. u盘，按下wifi按钮，复位板子，等待大约20秒，松开wifi按钮，uboot更新uboot。
5.5 Uboot源代码分析
5.5.1 lib_mips/board.c
linkit-smart-7688-uboot的主要代码内容在这个文件当中，如果想对该uboot进行一些功能修改的话，可以在这个文件中进行进行。
6 shell command
6.1 pidof madplay
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