原文地址:
使开发板上网
USB驱动部分
在arch/arm/mach-s3c2440/mach-smdk2440.c中，修改Usb时钟。
#include/* Add 2018/04/25-14:54:18 By Nick, for usb_s3c2440_init() */#include /* Add 2018/04/25-14:54:26 By Nick to support USB device gadget, 2017.5.4 */#include /* USB device UDC support add by 2018/04/25-14:54:57 By Nick */static struct s3c2410_udc_mach_info smdk2440_udc_cfg __initdata = { .pullup_pin = S3C2410_GPG(9),};/* Add by 2018/04/25-14:55:19 By Nick, fix device descriptor read/64, error -62 bug, value refer to datasheet P255 */int usb_s3c2440_init(void){ /* Input Frequency is 12.0000MHz, and MDEV=0x38 PDIV=2 SDIV=2, so output frequency 48.00MHz */ unsigned long upllvalue = (0x38<<12)|(0x02<<4)|(0x02); while (upllvalue != __raw_readl(S3C2410_UPLLCON)) { __raw_writel(upllvalue, S3C2410_UPLLCON); mdelay(1); } return 0;}
调用初始化函数
//在smdk2440_map_io函数中调用usb_s3c2440_init()，修改USB时钟static void __init smdk2440_map_io(void){ s3c24xx_init_io(smdk2440_iodesc, ARRAY_SIZE(smdk2440_iodesc)); s3c24xx_init_clocks(12000000); s3c24xx_init_uarts(smdk2440_uartcfgs, ARRAY_SIZE(smdk2440_uartcfgs)); usb_s3c2440_init();} 配置内核，使能USB和无线网卡(RT3070)驱动
[*] Networking support ---> -*- Wireless ---> <*> cfg80211 - wireless configuration API [ ] nl80211 testmode command [ ] enable developer warnings [ ] cfg80211 regulatory debugging [*] enable powersave by default [ ] cfg80211 DebugFS entries [*] cfg80211 wireless extensions compatibility [*] Wireless extensions sysfs files {*} Common routines for IEEE802.11 drivers [ ] lib80211 debugging messages <*> Generic IEEE 802.11 Networking Stack (mac80211) Default rate control algorithm (Minstrel) ---> [ ] Enable mac80211 mesh networking (pre-802.11s) support [ ] Export mac80211 internals in DebugFS [ ] Select mac80211 debugging features ---> Device Drivers ---> Generic Driver Options ---> (/sbin/hotplug) path to uevent helper [ ] Maintain a devtmpfs filesystem to mount at /dev [ ] Select only drivers that don't need compile-time external firmware [ ] Prevent firmware from being built -*- Userspace firmware loading support [*] Include in-kernel firmware blobs in kernel binary () External firmware blobs to build into the kernel binary [ ] Driver Core verbose debug messages [ ] Managed device resources verbose debug messages [*] Network device support ---> [*] Wireless LAN ---> <*> Ralink driver support ---> < > Ralink rt2500 (USB) support < > Ralink rt2501/rt73 (USB) support <*> Ralink rt27xx/rt28xx/rt30xx (USB) support [ ] rt2800usb - Include support for rt33xx devices [ ] rt2800usb - Include support for rt35xx devices (EXPERIMENTAL) [ ] rt2800usb - Include support for rt53xx devices (EXPERIMENTAL) [ ] rt2800usb - Include support for unknown (USB) devices [*] Ralink debug output Wireless tools移植
tar zxvf wireless_tools.29.tar.gzcd wireless_tools.29
修改Makefile
## Compiler to use (modify this for cross compile).CC = /opt/xtools/arm920t/bin/arm-linux-gcc## Other tools you need to modify for cross compile (static lib only).AR = /opt/xtools/arm920t/bin/arm-linux-arRANLIB = /opt/xtools/arm920t/bin/arm-linux-ranlib
使用make编译.
将生成的命令工具:ifrename、iwevent、wgetid、iwspy、iwlist、iwconfig、iwpriv，libiw.so.29拷贝到开发板的/bin下，并分别赋予权限chmod 777 iw* libiw.so.29.制作openssl库
tar zxvf openssl-1.0.0s.tar.gz mkdir install
修改Makefile
- 修改路径
INSTALL_PREFIX=INSTALLTOP=/home/nick/s3c2440/3rdparty/openssl-1.0.0s/installOPENSSLDIR=/home/nick/s3c2440/3rdparty/openssl-1.0.0s/install
- 修改编译选项
CC= /opt/xtools/arm920t/bin/arm-linux-ccCFLAG= -ODEPFLAG= -DOPENSSL_NO_GMP -DOPENSSL_NO_JPAKE -DOPENSSL_NO_MD2 -DOPENSSL_NO_RC5 -DOPENSSL_NO_RFC3779 -DOPENSSL_NO_STOREPEX_LIBS=EX_LIBS=EXE_EXT=ARFLAGS=AR= /opt/xtools/arm920t/bin/arm-linux-ar $(ARFLAGS) rRANLIB= /opt/xtools/arm920t/bin/arm-linux-ranlib
- 使用sudo make && sudo make install 编译安装 拷贝libcrypto.a; libssl.a到开发板的/lib下 在下一步wpa_supplicant中需要使用这个库，因此install将会被引用。
wpa_supplicant移植
tar zxvf wpa_supplicant-0.7.3.tar.gz cd ./wpa_supplicant-0.7.3/wpa_supplicant/cp defconfig .config
修改.config
CC=/opt/xtools/arm920t/bin/arm-linux-gcc -L /home/nick/s3c2440/3rdparty/openssl-1.0.0s/install/lib#CC=/opt/brcm/hndtools-mipsel-uclibc/bin/mipsel-uclibc-gcc#CFLAGS += -OsCFLAGS += -I/home/nick/s3c2440/3rdparty/openssl-1.0.0s/install/include#CPPFLAGS += -I../src/include -I../../src/router/openssl/include#LIBS += -L/opt/brcm/hndtools-mipsel-uclibc-0.9.19/lib -lsslLIBS += -L /home/nick/s3c2440/3rdparty/openssl-1.0.0s/install/lib
使用make编译
将wpa_cli，wpa_supplicant，wpa_passphrase拷贝到开发板的/bin目录下。并给予权限 chmod 777：wpa_cli，wpa_supplicant，wpa_passphrase开发板配置以及操作
在/etc目录下创建wpa_supplicant.conf配置文件
cd /etcwpa_passphrase ssid psk >> wpa_supplicant.conf
ssid 是WIFI的用户名
psk 是WIFI的密码 例如：wpa_passphrase 16402_1 1640216402 >> wpa_supplicant.conf
cat ./wpa_supplicant.conf network={ ssid="16402_1" #psk="1640216402" psk=136a6b18bd0d21eb12d6bc591fa652d628cbb438e8f29fcfeb8d763c0bf15ec2}[nick@NickQ_fl2440 ~]# 修改wpa_supplicant.conf,加入加密方式等配置
cat wpa_supplicant.conf network={ ssid="16402_1" key_mgmt=WPA-PSK proto=WPA2 pairwise=TKIP CCMP group=TKIP CCMP psk="1640216402"} key_mgmt=WPA-PSK 表示 采用WPA-PSK共享密钥的认证方式
proto=WPA2 表示 WPA2加密方式 pairwise = TKIP CCMP 和 group =TKIP CCMP 表示 自动匹配加密算法CCMP或TKIP；
启动RT3070并配置RT3070无线网卡参数
wpa_supplicant -B -d -Dwext -iwlan0 -c/etc/wpa_supplicant.conf
其中：
-d ：增加调试信息 -B：后台守护进程 -c：指定配置文件 -Dwext：wext为驱动名称 -iwlan0 ：wlan0为网络接口名称
iwconfig 查看连接状态，已连接
[nick@NickQ_fl2440 ~]# iwconfiglo no wireless extensions.eth0 no wireless extensions.wlan0 IEEE 802.11bgn ESSID:"16402_1" Mode:Managed Frequency:2.437 GHz Access Point: 14:75:90:7C:18:AC Bit Rate=6.5 Mb/s Tx-Power=20 dBm Retry long limit:7 RTS thr:off Fragment thr:off Encryption key:off Power Management:on Link Quality=51/70 Signal level=-59 dBm Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 Tx excessive retries:0 Invalid misc:1 Missed beacon:0
ifconfig 查看网络状态,发现无IP地址
[nick@NickQ_fl2440 ~]# ifconfig wlan0wlan0 Link encap:Ethernet HWaddr 00:A1:B0:40:6F:1E inet6 addr: fe80::2a1:b0ff:fe40:6f1e/64 Scope:Link UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1 RX packets:8 errors:0 dropped:0 overruns:0 frame:0 TX packets:8 errors:0 dropped:0 overruns:0 carrier:0 collisions:0 txqueuelen:1000 RX bytes:600 (600.0 B) TX bytes:876 (876.0 B)
配置网络IP,子网掩码,网关
配置网络IP,子网掩码：ifconfig wlan0 192.168.168.100 netmask 255.255.255.0配置默认网关：route add default gw 192.168.168.1 配置DNS： echo "nameserver 8.8.8.8" > /etc/resolv.conf
Ping测试
[nick@NickQ_fl2440 ~]# ping baidu.comPING baidu.com (220.181.57.216): 56 data bytes64 bytes from 220.181.57.216: seq=0 ttl=55 time=25.000 ms64 bytes from 220.181.57.216: seq=1 ttl=55 time=65.000 ms64 bytes from 220.181.57.216: seq=2 ttl=55 time=65.000 ms
开机自启动
cd /etc/init.d/vim S20_conf_wifi
#!/bin/shifconfig wlan0 upwpa_supplicant -B -d -Dwext -iwlan0 -c/etc/wpa_supplicant.confifconfig wlan0 192.168.168.100 netmask 255.255.255.0route add default gw 192.168.168.1