March 2016

<trans data-src="在某东入手了一块Tenda W311M USB无线网卡准备给RPi使用。">A Tenda W311M USB wireless network card was prepared for RPi to use in a certain area.</trans> <trans data-src="插上之后lsusb查看">Check lsusb after plugging</trans> <trans data-src="```sh">```sh</trans> <trans data-src="pi@raspberrypi">pi@raspberrypi</trans> <trans data-src=":~ $ lsusb">:~ $ lsusb</trans> <trans data-src="Bus 001 Device 004: ID 148f:7601 Ralink Technology, Corp.">Bus 001 Device 004: ID 148f:7601 Ralink Technology, Corp.</trans> <trans data-src="Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter">Bus 001 Device 003: ID 0424:ec00 Standard Microsystems Corp. SMSC9512/9514 Fast Ethernet Adapter</trans> <trans data-src="Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.">Bus 001 Device 002: ID 0424:9514 Standard Microsystems Corp.</trans> <trans data-src="Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub">Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub</trans> <trans data-src="```">```</trans> <trans data-src="识别为148f:7601，搜索得知是MT7601，小米wifi2 小度wifi 360wifi等也使用同样的芯片。">It is identified as 148f: 7601. The search result shows that it is MT7601. Xiaomi Wifi2 and Xiaomi Wifi 360 also use the same chip.</trans> <trans data-src="普通的STA模式即接收模式现在（4.1.19-v7+）应该免驱了，ifconfig后也确实出现了wlan0，但似乎没有AP的驱动。">The common STA mode, namely the receive mode, should now be drive free (4.1.19-v7+). After ifconfig, wlan0 does appear, but it seems that there is no AP driver.</trans> <trans data-src="经搜索发现[一篇文章](">A search found [an article]（</trans> <trans data-src="http://blog.csdn.net/sumang_87/article/details/38168877">http://blog.csdn.net/sumang_87/article/details/38168877</trans> <trans data-src=" "一篇文章")，按照其中的步骤做">"One article"), follow the steps</trans> <trans data-src="```sh">```sh</trans> <trans data-src="pi@raspberrypi">pi@raspberrypi</trans> <trans data-src=":~/Downloads/mi $ git clone ">:~/Downloads/mi $ git clone </trans> <trans data-src="https://github.com/eywalink/mt7601u.git">https://github.com/eywalink/mt7601u.git</trans> <trans data-src="....">....</trans> <trans data-src="pi@raspberrypi">pi@raspberrypi</trans> <trans data-src=":~/Downloads/mi $ cd mt7601u/">:~/Downloads/mi $ cd mt7601u/</trans> <trans data-src="pi@raspberrypi">pi@raspberrypi</trans> <trans data-src=":~/Downloads/mi/mt7601u $ sudo ./">:~/Downloads/mi/mt7601u $ sudo ./</trans> <trans data-src="miwifi_build.sh">miwifi_build.sh</trans> <trans data-src="```">```</trans> <trans data-src="make时出现错误">An error occurred while making</trans> <trans data-src="```sh">```sh</trans> <trans data-src="Makefile:387: recipe for target 'LINUX' failed">Makefile:387: recipe for target 'LINUX' failed</trans> <trans data-src="```">```</trans> <trans data-src="原因是没有linux-headers，而apt源中只有3.x.x版本的。">The reason is that there is no Linux headers, and there is only 3. x.x version in the apt source.</trans> <trans data-src="当前版本的可以从[">The current version of can be accessed from[</trans> <trans data-src="https://github.com/raspberrypi/">https://github.com/raspberrypi/</trans> <trans data-src="](">](</trans> <trans data-src="https://github.com/raspberrypi/">https://github.com/raspberrypi/</trans> <trans data-src=" ""> "</trans> <trans data-src="https://github.com/raspberrypi/">https://github.com/raspberrypi/</trans> <trans data-src="")或者使用[rpi-source](">") Or use [rpi source]（</trans> <trans data-src="https://github.com/notro/rpi-source/wiki">https://github.com/notro/rpi-source/wiki</trans> <trans data-src=" "rpi-source")获得。">"Rpi source").</trans> <trans data-src="```sh">```sh</trans> <trans data-src="sudo wget ">sudo wget </trans> <trans data-src="https://raw.githubusercontent.com/notro/rpi-source/master/rpi-source">https://raw.githubusercontent.com/notro/rpi-source/master/rpi-source</trans> <trans data-src=" -O /usr/bin/rpi-source && sudo chmod +x /usr/bin/rpi-source && /usr/bin/rpi-source -q --tag-update"> -O /usr/bin/rpi-source && sudo chmod +x /usr/bin/rpi-source && /usr/bin/rpi-source -q --tag-update</trans> <trans data-src="sudo rpi-source">sudo rpi-source</trans> <trans data-src="```">```</trans> <trans data-src="这时应该可以make成功了。<">At this time, you should be able to make successfully<</trans> <trans data-src="span style="color: #ccffcc;">~~我已经忘了还遇到了哪些问题。~~></">Span style="color: # ccffcc;">~~I have forgotten what problems I have encountered.~~></</trans> <trans data-src="span>">span></trans> <trans data-src="此处略去dhcpd的安装和配置">The installation and configuration of dhcpd are omitted here</trans> <trans data-src="```sh">```sh</trans> <trans data-src="pi@raspberrypi">pi@raspberrypi</trans> <trans data-src=":~/Downloads/mi/mt7601u $ sudo ./">:~/Downloads/mi/mt7601u $ sudo ./</trans> <trans data-src="miwifi_work.sh">miwifi_work.sh</trans> <trans data-src="#或者手动卸载sta和加载ap驱动">#Or manually unload the sta and load the ap drive</trans> <trans data-src="pi@raspberrypi">pi@raspberrypi</trans> <trans data-src=":~ $sudo ifconfig wlan0 down">:~ $sudo ifconfig wlan0 down</trans> <trans data-src="pi@raspberrypi">pi@raspberrypi</trans> <trans data-src=":~ $sudo rmmod mt7601u">:~ $sudo rmmod mt7601u</trans> <trans data-src="pi@raspberrypi">pi@raspberrypi</trans> <trans data-src=":~ $sudo sudo modprobe rtnet7601Uap">:~ $sudo sudo modprobe rtnet7601Uap</trans> <trans data-src="pi@raspberrypi">pi@raspberrypi</trans> <trans data-src=":~ $sudo modprobe mt7601Uap">:~ $sudo modprobe mt7601Uap</trans> <trans data-src="pi@raspberrypi">pi@raspberrypi</trans> <trans data-src=":~ $sudo modprobe rtutil7601Uap">:~ $sudo modprobe rtutil7601Uap</trans> <trans data-src="pi@raspberrypi">pi@raspberrypi</trans> <trans data-src=":~ $sudo ifconfig ra0 up">:~ $sudo ifconfig ra0 up</trans> <trans data-src="pi@raspberrypi">pi@raspberrypi</trans> <trans data-src=":~ $iwconfig">:~ $iwconfig</trans> <trans data-src="```">```</trans> <trans data-src="iwconfig看了一下就懵逼了，一共ra0-ra15有16个interface，essid为HT_AP0、HT_AP1、HT_AP2…，并且其他设备并搜不到，打开日志一看有如下之类的错误">After a look, iwconfig was stunned. There were 16 interfaces in ra0-ra15, with the essids of HT_AP0, HT_AP1, HT_AP2..., and other devices could not be found. When the log was opened, the following errors were found</trans> <trans data-src="```sh">```sh</trans> <trans data-src="Qidx(0), not enough space in MgmtRing, MgmtRingFullCount=1!">Qidx(0), not enough space in MgmtRing, MgmtRingFullCount=1!</trans> <trans data-src="Qidx(0), not enough space in MgmtRing, MgmtRingFullCount=2!">Qidx(0), not enough space in MgmtRing, MgmtRingFullCount=2!</trans> <trans data-src="Qidx(0), not enough space in MgmtRing, MgmtRingFullCount=3!">Qidx(0), not enough space in MgmtRing, MgmtRingFullCount=3!</trans> <trans data-src="Qidx(0), not enough space in MgmtRing, MgmtRingFullCount=4!">Qidx(0), not enough space in MgmtRing, MgmtRingFullCount=4!</trans> <trans data-src="#或是">#Or</trans> <trans data-src="kernel: [47203.620633] no file read method">kernel: [47203.620633] no file read method</trans> <trans data-src="kernel: [47203.620657] Read file “/etc/Wireless/RT2870AP/RT2870AP.dat” failed(errCode=-1)!">kernel: [47203.620657] Read file “/etc/Wireless/RT2870AP/RT2870AP.dat” failed(errCode=-1)!</trans> <trans data-src="kernel: [47203.620670] 1. ">kernel: [47203.620670] 1. </trans> <trans data-src="Phy Mode = 6">Phy Mode = 6</trans> <trans data-src="kernel: [47203.620678] 2. ">kernel: [47203.620678] 2. </trans> <trans data-src="Phy Mode = 6">Phy Mode = 6</trans> <trans data-src="kernel: [47203.620687] NVM is Efuse and its size =1d[1e0-1fc]">kernel: [47203.620687] NVM is Efuse and its size =1d[1e0-1fc]</trans> <trans data-src="kernel: [47203.630202] ERROR!!! ">kernel: [47203.630202] ERROR!!! </trans> <trans data-src="MT7601 E2PROM: WRONG VERSION 0xd, should be 12">MT7601 E2PROM: WRONG VERSION 0xd, should be 12</trans> <trans data-src="kernel: [47203.645531] 3. ">kernel: [47203.645531] 3. </trans> <trans data-src="Phy Mode = 6">Phy Mode = 6</trans> <trans data-src="kernel: [47203.645545] AntCfgInit: primary/secondary ant 0/1">kernel: [47203.645545] AntCfgInit: primary/secondary ant 0/1</trans> <trans data-src="kernel: [47203.849695] RTMPSetPhyMode: channel is out of range, use first channel=0">kernel: [47203.849695] RTMPSetPhyMode: channel is out of range, use first channel=0</trans> <trans data-src="```">```</trans> <trans data-src="第一种错误的我没验证过的方法是[这个](">The first wrong method I haven't verified is [this]（</trans> <trans data-src="http://blog.csdn.net/bbandxq521/article/details/5997419">http://blog.csdn.net/bbandxq521/article/details/5997419</trans> <trans data-src=" "这个")">This)</trans> <trans data-src="第二种错误就是没有成功读取配置文件，这时候驱动就使用默认的配置如ssid为HT_APx，相关源码如下">The second error is that the configuration file is not successfully read. At this time, the driver uses the default configuration. For example, the ssid is HT_APx. The relevant source code is as follows</trans> <trans data-src="```c">```c</trans> <trans data-src="//ap.c Line 164">//ap.c Line 164</trans> <trans data-src="for (apidx=0; apidx<pAd->ApCfg.BssidNum; apidx++)">for (apidx=0; apidx<pAd->ApCfg.BssidNum; apidx++)</trans> <trans data-src="{">{</trans> <trans data-src="MULTISSID_STRUCT *pMbss = &pAd->ApCfg.">MULTISSID_STRUCT *pMbss = &pAd->ApCfg.</trans> <trans data-src="MBSSID[apidx];">MBSSID[apidx];</trans> <trans data-src="if ((pMbss->SsidLen <= 0) || (pMbss->SsidLen > MAX_LEN_OF_SSID))">if ((pMbss->SsidLen <= 0) || (pMbss->SsidLen > MAX_LEN_OF_SSID))</trans> <trans data-src="{">{</trans> <trans data-src="NdisMoveMemory(pMbss->Ssid, "HT_AP", 5);">NdisMoveMemory(pMbss->Ssid, "HT_AP", 5);</trans> <trans data-src="pMbss->Ssid[5] = '0'+apidx;">pMbss->Ssid[5] = '0'+apidx;</trans> <trans data-src="pMbss->SsidLen = 6;">pMbss->SsidLen = 6;</trans> <trans data-src="}">}</trans> <trans data-src="//.......................................">//.......................................</trans> <trans data-src="```">```</trans> <trans data-src="哦那就看看怎么让它读配置。">Oh, let's see how to make it read the configuration.</trans> <trans data-src="Read file failed的错误来自于这">The error of Read file failed comes from here</trans> <trans data-src="```c">```c</trans> <trans data-src="//rt_profile.c Line 181">//rt_profile.c Line 181</trans> <trans data-src="if (src && *src)">if (src && *src)</trans> <trans data-src="{">{</trans> <trans data-src="RtmpOSFSInfoChange(&osFSInfo, TRUE);">RtmpOSFSInfoChange(&osFSInfo, TRUE);</trans> <trans data-src="srcf = RtmpOSFileOpen(src, O_RDONLY, 0);">srcf = RtmpOSFileOpen(src, O_RDONLY, 0);</trans> <trans data-src="if (IS_FILE_OPEN_ERR(srcf)) ">if (IS_FILE_OPEN_ERR(srcf)) </trans> <trans data-src="{">{</trans> <trans data-src="DBGPRINT(RT_DEBUG_ERROR, ("Open file \"%s\" failed!\n", src));">DBGPRINT(RT_DEBUG_ERROR, ("Open file \"%s\" failed!\n", src));</trans> <trans data-src="}">}</trans> <trans data-src="else ">else </trans> <trans data-src="{">{</trans> <trans data-src="retval =RtmpOSFileRead(srcf, buffer, MAX_INI_BUFFER_SIZE);">retval =RtmpOSFileRead(srcf, buffer, MAX_INI_BUFFER_SIZE);</trans> <trans data-src="if (retval > 0)">if (retval > 0)</trans> <trans data-src="{">{</trans> <trans data-src="RTMPSetProfileParameters(pAd, buffer);">RTMPSetProfileParameters(pAd, buffer);</trans> <trans data-src="retval = NDIS_STATUS_SUCCESS;">retval = NDIS_STATUS_SUCCESS;</trans> <trans data-src="}">}</trans> <trans data-src="else">else</trans> <trans data-src="DBGPRINT(RT_DEBUG_ERROR, ("Read file \"%s\" failed(errCode=%d)!\n", src, retval));">DBGPRINT(RT_DEBUG_ERROR, ("Read file \"%s\" failed(errCode=%d)!\n", src, retval));</trans> <trans data-src="retval = RtmpOSFileClose(srcf);">retval = RtmpOSFileClose(srcf);</trans> <trans data-src="if ( retval != 0)">if ( retval != 0)</trans> <trans data-src="{">{</trans> <trans data-src="retval = NDIS_STATUS_FAILURE;">retval = NDIS_STATUS_FAILURE;</trans> <trans data-src="DBGPRINT(RT_DEBUG_ERROR, ("Close file \"%s\" failed(errCode=%d)!\n", src, retval));">DBGPRINT(RT_DEBUG_ERROR, ("Close file \"%s\" failed(errCode=%d)!\n", src, retval));</trans> <trans data-src="}">}</trans> <trans data-src="}">}</trans> <trans data-src="RtmpOSFSInfoChange(&osFSInfo, FALSE);">RtmpOSFSInfoChange(&osFSInfo, FALSE);</trans> <trans data-src="}">}</trans> <trans data-src="#ifdef HOSTAPD_SUPPORT">#ifdef HOSTAPD_SUPPORT</trans> <trans data-src="for (i = 0; i < pAd->ApCfg.BssidNum; i++)">for (i = 0; i < pAd->ApCfg.BssidNum; i++)</trans> <trans data-src="{">{</trans> <trans data-src="pAd->ApCfg.">pAd->ApCfg.</trans> <trans data-src="MBSSID[i].">MBSSID[i].</trans> <trans data-src="Hostapd=FALSE;">Hostapd=FALSE;</trans> <trans data-src="DBGPRINT(RT_DEBUG_TRACE, ("Reset ra%d hostapd support=FLASE", i));">DBGPRINT(RT_DEBUG_TRACE, ("Reset ra%d hostapd support=FLASE", i));</trans> <trans data-src="}">}</trans> <trans data-src="#endif /*HOSTAPD_SUPPORT */">#endif /*HOSTAPD_SUPPORT */</trans> <trans data-src="```">```</trans> <trans data-src="那就是RtmpOSFileRead()没有读取到文件，这个函数在/src/os/linux/rt_linux.c里">That is, RtmpOSFileRead() does not read the file. This function is in/src/os/linux/rt_linux. c</trans> <trans data-src="```c">```c</trans> <trans data-src="//rt_linux.c Line 1162">//rt_linux.c Line 1162</trans> <trans data-src="int RtmpOSFileRead(RTMP_OS_FD osfd, char *pDataPtr, int readLen)">int RtmpOSFileRead(RTMP_OS_FD osfd, char *pDataPtr, int readLen)</trans> <trans data-src="{">{</trans> <trans data-src="/* The object must have a read method */">/* The object must have a read method */</trans> <trans data-src="if (osfd->f_op && osfd->f_op->read) {">if (osfd->f_op && osfd->f_op->read) {</trans> <trans data-src="return osfd->f_op->read(osfd, pDataPtr, readLen, &osfd->f_pos);">return osfd->f_op->read(osfd, pDataPtr, readLen, &osfd->f_pos);</trans> <trans data-src="} else {">} else {</trans> <trans data-src="DBGPRINT(RT_DEBUG_ERROR, ("no file read method\n"));">DBGPRINT(RT_DEBUG_ERROR, ("no file read method\n"));</trans> <trans data-src="return -1;">return -1;</trans> <trans data-src="}">}</trans> <trans data-src="}">}</trans> <trans data-src="```">```</trans> <trans data-src="也正是这里报的no file read method错误。">It is also the no file read method error reported here.</trans> <trans data-src="检查 osfd->f_op 和 osfd->f_op->read 发现后者为空，即没有read函数来读取文件。">Check osfd ->f_op and osfd ->f_op ->read, and find that the latter is empty, that is, there is no read function to read the file.</trans> <trans data-src="在[这里](">At [here]（</trans> <trans data-src="http://lkml.iu.edu/hypermail/linux/kernel/1506.3/02378.html">http://lkml.iu.edu/hypermail/linux/kernel/1506.3/02378.html</trans> <trans data-src=" "这里")和[这里](">"Here") and [here]（</trans> <trans data-src="http://stackoverflow.com/questions/33183923/">http://stackoverflow.com/questions/33183923/</trans> <trans data-src=" "这里")看到用`ssize_t vfs_read(struct file* filp, char __user* buffer, size_t len, loff_t* pos);`">"Here"). See the use of ` size_t vfs_read (struct file * filp, char __user * buffer, size_t len, loff_t * pos)`</trans> <trans data-src="替换`ssize_t read()`：">Replace 'size_t read()':</trans> <trans data-src="```c">```c</trans> <trans data-src="int RtmpOSFileRead(RTMP_OS_FD osfd, char *pDataPtr, int readLen)">int RtmpOSFileRead(RTMP_OS_FD osfd, char *pDataPtr, int readLen)</trans> <trans data-src="{">{</trans> <trans data-src="DBGPRINT(RT_DEBUG_ERROR, ("add: %p %p\n", osfd->f_op, osfd->f_op->read));">DBGPRINT(RT_DEBUG_ERROR, ("add: %p %p\n", osfd->f_op, osfd->f_op->read));</trans> <trans data-src="/* The object must have a read method */">/* The object must have a read method */</trans> <trans data-src="if (osfd->f_op /*&& osfd->f_op->read*/) {">if (osfd->f_op /*&& osfd->f_op->read*/) {</trans> <trans data-src="//return osfd->f_op->read(osfd, pDataPtr, readLen, &osfd->f_pos);">//return osfd->f_op->read(osfd, pDataPtr, readLen, &osfd->f_pos);</trans> <trans data-src="return vfs_read(osfd, pDataPtr, readLen, &osfd->f_pos);">return vfs_read(osfd, pDataPtr, readLen, &osfd->f_pos);</trans> <trans data-src="} else {">} else {</trans> <trans data-src="DBGPRINT(RT_DEBUG_ERROR, ("no file read method\n"));">DBGPRINT(RT_DEBUG_ERROR, ("no file read method\n"));</trans> <trans data-src="return -1;">return -1;</trans> <trans data-src="}">}</trans> <trans data-src="}">}</trans> <trans data-src="```">```</trans> <trans data-src="重新编译和加载后">After recompiling and loading</trans> <trans data-src="```sh">```sh</trans> <trans data-src="pi@raspberrypi">pi@raspberrypi</trans> <trans data-src=":~/Downloads/mi/mt7601u $ iwconfig">:~/Downloads/mi/mt7601u $ iwconfig</trans> <trans data-src="ppp0      no wireless extensions.">ppp0      no wireless extensions.</trans> <trans data-src="ra0       RTWIFI SoftAP  ESSID:"FREE-WIFI"">ra0       RTWIFI SoftAP  ESSID:"FREE-WIFI"</trans> <trans data-src="Mode:Managed  Channel=11  Access Point: C8:3A:35:CC:ED:B2">Mode:Managed  Channel=11  Access Point: C8:3A:35:CC:ED:B2</trans> <trans data-src="Bit Rate=150 Mb/s">Bit Rate=150 Mb/s</trans> <trans data-src="lo        no wireless extensions.">lo        no wireless extensions.</trans> <trans data-src="eth0      no wireless extensions.">eth0      no wireless extensions.</trans> <trans data-src="```">```</trans> <trans data-src="[![](">[![](</trans> <trans data-src="http://lo-li.net/wp-content/uploads/2016/03/1361093046-169x300.jpg">http://lo-li.net/wp-content/uploads/2016/03/1361093046-169x300.jpg</trans> <trans data-src=")](">)](</trans> <trans data-src="http://lo-li.net/wp-content/uploads/2016/03/1361093046-169x300.jpg">http://lo-li.net/wp-content/uploads/2016/03/1361093046-169x300.jpg</trans> <trans data-src=")">)</trans>

Use the MT7601 chip USB network card to build an AP on Raspberry Pie 2

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