基于TI 的PSDK的linux和文件系统添加wilc1000。sdk版本：ti-processor-sdk-linux-am335x-evm-06.03.00.106。
1.硬件连接
wilc1000? ? ----------------??am335x
RESET_N? ?--------------? GPMC_A6-------------?gpio1_22
WAKE ----------------------GPMC_BEN1 ----------gpio1_28
IRQN -----------------------GPMC_CSN0 ----------gpio1_29
SDCLK---------------------MMC0_CLK
SD_CMD------------------MMC0_CMD
SD_DATA0-3-------------MMC0_DATA0-3
SDIO_SPI_CFG ----------接地 （P10的配置引脚，固定接地为SDIO通迅模式）
2.驱动库准备
基于linux内核4.xx.xx版本的源码：
https://github.com/linux4wilc从上述源码仓库中下载Driver项目目录下的源码包并解压。
2.1.1 源码拷贝
将文件夹：wilc整个拷贝至linux源码目录中：ti-processor-sdk-linux-am335x-evm-06.03.00.106/board-support/linux-4.19.94+gitAUTOINC+be5389fd85-gbe5389fd85/drivers/staging
保留原wilc1000目录不去动它，两个平级。
2.1.2 修改MakeFile
修改staging目录下的MakeFile文件：
将? obj-$(CONFIG_WILC)?? ??? ?+= wilc1000/ 改成 ：obj-$(CONFIG_WILC)?? ??? ?+= wilc/
2.1.3 修改Kconfig
修改staging目录下的Kconfig文件：
将source "drivers/staging/wilc1000/Kconfig"? ?改成：source "drivers/staging/wilc/Kconfig"
2.2 wifi固件拷贝
下载源码仓库中firmware项目目录的内容，并解压。
将mhcp文件夹拷贝至ti-processor-sdk-linux-am335x-evm-06.03.00.106/board-support/linux-4.19.94+gitAUTOINC+be5389fd85-gbe5389fd85/firmware。这步可能不需要，主要是看到wilc的驱动说明里说，新版本WIFI固件会编译进内核，所以先拷贝（其实最终，WIFI测试的时候，WIFI固件还是在测试时间动态发送给wifi模块然后再运行的）。
同时，将mhcp文件夹拷贝至根文件系统中：lib/firmware/
2.3 添加config配置
?我使用的是修改Ti的tisdk_am335x-evm_defconfig? 文件，因为Ti的sdk编译使用menuconfig界面配置无效，最终会被内核编译时，make linux时，使用tisdk_am335x-evm_defconfig 内容替换。
?添加如下
CONFIG_WLAN_VENDOR_MCHP=y
CONFIG_WILC=m
CONFIG_WILC_SDIO=m以上配置，参考WILC的驱动移植说明文档，在git里有下载链接。从后续测试情况看，CONFIG_WILC应该是y就行了，因为m也无法产生.ko模块。
其中WILC_SDIO依赖CFG80211 && INET && MMC，而所依赖的几项，原来已经配置过了。注意CFG80211，在WIFI测试的时候会讲。
2.4 添加设置树
添加如下：
mmc1_pins: pinmux_mmc1_pins {
pinctrl-single,pins = <
/* AM33XX_IOPAD(0x960, PIN_INPUT | MUX_MODE7) */ /* spio0_cs1.gpio0_6 */
AM33XX_IOPAD(0x8fc, PIN_INPUT_PULLUP | MUX_MODE0) /* mmc0_dat0.mmc0_dat0 */
AM33XX_IOPAD(0x8f8, PIN_INPUT_PULLUP | MUX_MODE0) /* mmc0_dat1.mmc0_dat1 */
AM33XX_IOPAD(0x8f4, PIN_INPUT_PULLUP | MUX_MODE0) /* mmc0_dat2.mmc0_dat2 */
AM33XX_IOPAD(0x8f0, PIN_INPUT_PULLUP | MUX_MODE0) /* mmc0_dat3.mmc0_dat3 */
AM33XX_IOPAD(0x904, PIN_INPUT_PULLUP | MUX_MODE0) /* mmc0_cmd.mmc0_cmd */
AM33XX_IOPAD(0x900, PIN_INPUT_PULLUP | MUX_MODE0) /* mmc0_clk.mmc0_clk */
AM33XX_IOPAD(0x858, PIN_OUTPUT_PULLUP | MUX_MODE7) /* gpmc_a6 reset*/
AM33XX_IOPAD(0x878, PIN_OUTPUT_PULLUP | MUX_MODE7) /* gpmc_ben1 chipen*/
AM33XX_IOPAD(0x87c, PIN_INPUT_PULLUP | MUX_MODE7) /* gpmc_csn0 irq*/
>;
};
&mmc1 {
vmmc-supply = <&vmmcsd_fixed>;
pinctrl-names = "default";
pinctrl-0 = <&mmc1_pins>;
// non-removable;
bus-width = <4>;
status = "okay";
wilc_sdio@0 {
compatible = "microchip,wilc1000", "microchip,wilc3000";
irq-gpios = <&gpio1 29 0>;
reset-gpios = <&gpio1 22 1>; //<&gpio1 22 GPIO_ACTIVE_LOW>;
chip_en-gpios = <&gpio1 28 1>;
interrupt-parent = <&gpio1>;
interrupts = <29 0x2>; /* Falling edge only */
// clocks = <&pck1>;
// clock-names = "rtc_clk";
// assigned-clocks = <&pck1>;
// assigned-clock-rates = <32768>;
status = "okay";
reg = <0>;
bus-width = <4>;
};
};2.5 编译
shell中cd到sdk根目录ti-processor-sdk-linux-am335x-evm-06.03.00.106/。
make linux-clear
make linux编译驱动没有报错，设备树配置容易出错。最终得到wilc-sdio.ko模块。再三确认，没有wilc.ko模块。因为测试时，按atmel文档是先安装wilc.ko模块。忽略不用管便可。
注：源码包里的设备树配置，reset，en有效都是0，如下
? ? ? ? reset-gpios = <&gpio1 22 0>; ?//<&gpio1 22 GPIO_ACTIVE_LOW>;
?? ??? ?chip_en-gpios = <&gpio1 28 0>;
虽然能用，但是用示波器量，en引脚的电平并没有反向，还是一样的，但低电平脉宽不正常。这部分参考了网友的设置：
AM335X BeagleBoneBlack wilc3000蓝牙wifi驱动移植_MC_J的博客-CSDN博客
3. WIFI测试
3.1 驱动模块安装
将wilc-sdio.ko拷贝至/lib/modules/4.19.94-gbe5389fd85/kernel/drivers/staging/wilc
确保之前WIFI固件已拷贝至lib/firmware/。2.2节有描述。
在wilc-sdio.ko目录下，执行? insmod wilc-sdio.ko。但会出错，如下。
/wilc# insmod wilc-sdio.ko
[ 88.260186] wilc_sdio: module is from the staging directory, the quality is unknown, you have been warned.
[ 88.274813] wilc_sdio: Unknown symbol cfg80211_inform_bss_frame_data (err -2)
[ 88.283120] wilc_sdio: Unknown symbol cfg80211_scan_done (err -2)
[ 88.291112] wilc_sdio: Unknown symbol cfg80211_remain_on_channel_expired (err -2)
[ 88.299387] wilc_sdio: Unknown symbol cfg80211_ref_bss (err -2)
[ 88.305453] wilc_sdio: Unknown symbol cfg80211_find_ie_match (err -2)
[ 88.313364] wilc_sdio: Unknown symbol cfg80211_disconnected (err -2)
[ 88.320555] wilc_sdio: Unknown symbol wiphy_new_nm (err -2)
[ 88.326216] wilc_sdio: Unknown symbol cfg80211_ready_on_channel (err -2)
[ 88.333931] wilc_sdio: Unknown symbol wiphy_register (err -2)
[ 88.340321] wilc_sdio: Unknown symbol cfg80211_put_bss (err -2)
[ 88.346476] wilc_sdio: Unknown symbol ieee80211_get_channel (err -2)
[ 88.353796] wilc_sdio: Unknown symbol wiphy_unregister (err -2)
[ 88.360765] wilc_sdio: Unknown symbol cfg80211_get_bss (err -2)
[ 88.366796] wilc_sdio: Unknown symbol cfg80211_mgmt_tx_status (err -2)
[ 88.374337] wilc_sdio: Unknown symbol ieee80211_channel_to_frequency (err -2)
[ 88.382177] wilc_sdio: Unknown symbol cfg80211_rx_mgmt (err -2)
[ 88.388827] wilc_sdio: Unknown symbol cfg80211_get_p2p_attr (err -2)
[ 88.395265] wilc_sdio: Unknown symbol ieee80211_frequency_to_channel (err -2)
[ 88.403414] wilc_sdio: Unknown symbol cfg80211_find_vendor_ie (err -2)
[ 88.411496] wilc_sdio: Unknown symbol cfg80211_connect_done (err -2)
[ 88.419173] wilc_sdio: Unknown symbol wiphy_free (err -2)
insmod: ERROR: could not insert module wilc-sdio.ko: Unknown symbol in module是因为缺少依赖模块cfg80211.ko模块。所以要先 安装 cfg80211.ko再安装wilc-sdio.ko。
其实还有直接识别依赖自动安装的指令modprobe wilc-sdio。要想使用modprobe 需要先depmod。
cd到wilc-sdio的目录，即/lib/modules/4.19.94-gbe5389fd85/kernel/drivers/staging/wilc
cd /lib/modules/4.19.94-gbe5389fd85/kernel/drivers/staging/wilc
depmod // 这时，会自动为目录下的ko模块创建依赖关系 ，在/lib/modules/4.19.94-gbe5389fd85/kernel的文件modules.dep中 操作过后，模块信息已被记录，此时在文件系统的任意目录都可以执行modprobe指令。
modprobe wilc-sdio //不要后缀.ko， 自动先安装 cfg80211,然后再安装wilc-sdio 安装完成后，即可看到wlan0无线网卡正常安装后信息：
root@am335x-evm:/lib/modules/4.19.94-gbe5389fd85/kernel/drivers/staging/wilc# cd ~
root@am335x-evm:~# modprobe wilc-sdio
[ 658.706632] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[ 658.878954] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[ 658.893357] wilc_sdio: module is from the staging directory, the quality is unknown, you have been warned.
[ 658.927438] Registering wifi device
[ 658.930973] Max scan ids= 10,Max scan IE len= 1000,Signal Type= 1,Interface Modes= 844
[ 658.955773] Initializing Locks ...
[ 658.975673] wifi_pm : 0
[ 658.997477] wilc_sdio mmc0:0001:1: succesfully got gpio_reset
[ 659.003400] wilc_sdio mmc0:0001:1: succesfully got gpio_chip_en
[ 659.052433] wifi_pm : 1
[ 659.066825] wilc_sdio mmc0:0001:1: succesfully got gpio_reset
[ 659.083410] wilc_sdio mmc0:0001:1: succesfully got gpio_chip_en
[ 659.140057] wilc_sdio mmc0:0001:1: Driver Initializing success
root@am335x-evm:~# [ 659.287039] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_mac_open]MAC OPEN[76a1e170] wlan0
[ 659.311024] WILC POWER UP
[ 659.323226] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_init_host_int]Host[76a1e170][8831ded1]
[ 659.336117] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_mac_open]*** re-init ***
[ 659.349653] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_wlan_init]Initializing WILC_Wlan
[ 659.365461] wilc_sdio mmc0:0001:1: SDIO speed: 50000000
[ 659.385204] wilc_sdio mmc0:0001:1: chipid 001003a0
[ 659.403571] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_wlan_initialize]WILC Initialization done
[ 659.426636] wilc_sdio mmc0:0001:1 wlan0: INFO [wlan_initialize_threads]Initializing Threads ...
[ 659.447824] wilc_sdio mmc0:0001:1 wlan0: INFO [wlan_initialize_threads]Creating kthread for transmission
[ 659.471783] wilc_sdio mmc0:0001:1 wlan0: INFO [wlan_initialize_threads]Creating kthread for Debugging
[ 659.481913] wilc_sdio mmc0:0001:1: got gpio_irq successfully
[ 659.504321] wilc_sdio mmc0:0001:1 wlan0: INFO [init_irq]IRQ request succeeded IRQ-NUM= 79
[ 659.518559] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_wlan_get_firmware]Detect chip WILC1000
[ 659.532769] wilc_handle_isr,>> UNKNOWN_INTERRUPT - 0x00000000
[ 659.542031] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_wlan_get_firmware]loading firmware mchp/wilc1000_wifi_firmware.bin
[ 659.564507] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_wlan_get_firmware]WLAN firmware: mchp/wilc1000_wifi_firmware.bin
[ 659.604947] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_firmware_download]Downloading Firmware ...
[ 659.613951] wilc_wlan_firmware_downloadDownloading firmware size = 144876
[ 659.634809] wilc_wlan_firmware_download Offset = 126916
[ 659.641579] wilc_wlan_firmware_download Offset = 144876
[ 659.646845] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_firmware_download]Download Succeeded
[ 659.660034] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_start_firmware]Starting Firmware ...
[ 659.671027] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_start_firmware]Waiting for FW to get ready ...
[ 659.797963] cfg_indicate_rx: Info message received
[ 659.803285] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_start_firmware]Firmware successfully started
[ 659.828104] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_wlan_initialize]WILC Firmware Ver = WILC_WIFI_FW_REL_15_6 Build: 12804
[ 659.843042] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_init_fw_config]Start configuring Firmware
[ 659.998277] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_mac_open]Mac address: 60:8a:10:b6:68:62
[ 660.006796] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Setting mcast List with count = 1.
[ 660.016540] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[0]: 33:33:00:00:00:01
[ 660.041675] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Setting mcast List with count = 2.
[ 660.051410] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[0]: 33:33:00:00:00:01
[ 660.060472] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[1]: 01:00:5e:00:00:01
[ 660.076985] wilc_sdio mmc0:0001:1 wlan0: INFO [set_power_mgmt]dev [wlan0]
[ 660.086195] wilc_sdio mmc0:0001:1 wlan0: INFO [set_power_mgmt] Power save Enabled= 1 , TimeOut = -1
[ 660.131505] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Setting mcast List with count = 3.
[ 660.141250] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[0]: 33:33:00:00:00:01
[ 660.150297] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[1]: 01:00:5e:00:00:01
[ 660.159311] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[2]: 33:33:ff:b6:68:62
[ 660.184399] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Setting mcast List with count = 4.
[ 660.194144] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[0]: 33:33:00:00:00:01
[ 660.203187] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[1]: 01:00:5e:00:00:01
[ 660.212203] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[2]: 33:33:ff:b6:68:62
[ 660.221220] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[3]: 01:80:c2:00:00:00
[ 660.263214] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Setting mcast List with count = 5.
[ 660.272946] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[0]: 33:33:00:00:00:01
[ 660.281998] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[1]: 01:00:5e:00:00:01
[ 660.291018] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[2]: 33:33:ff:b6:68:62
[ 660.300030] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[3]: 01:80:c2:00:00:00
[ 660.309045] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[4]: 01:80:c2:00:00:03
[ 660.330315] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Setting mcast List with count = 6.
[ 660.340000] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[0]: 33:33:00:00:00:01
[ 660.349047] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[1]: 01:00:5e:00:00:01
[ 660.358063] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[2]: 33:33:ff:b6:68:62
[ 660.367068] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[3]: 01:80:c2:00:00:00
[ 660.376081] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[4]: 01:80:c2:00:00:03
[ 660.385101] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[5]: 01:80:c2:00:00:0e
[ 662.042010] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Setting mcast List with count = 7.
[ 662.051858] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[0]: 33:33:00:00:00:01
[ 662.060968] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[1]: 01:00:5e:00:00:01
[ 662.070051] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[2]: 33:33:ff:b6:68:62
[ 662.079121] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[3]: 01:80:c2:00:00:00
[ 662.088200] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[4]: 01:80:c2:00:00:03
[ 662.097269] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[5]: 01:80:c2:00:00:0e
[ 662.106312] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[6]: 33:33:00:00:00:fb
[ 662.139624] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Setting mcast List with count = 8.
[ 662.149329] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[0]: 33:33:00:00:00:01
[ 662.158379] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[1]: 01:00:5e:00:00:01
[ 662.167395] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[2]: 33:33:ff:b6:68:62
[ 662.176398] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[3]: 01:80:c2:00:00:00
[ 662.185426] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[4]: 01:80:c2:00:00:03
[ 662.194443] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[5]: 01:80:c2:00:00:0e
[ 662.203455] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[6]: 33:33:00:00:00:fb
[ 662.212471] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_set_multicast_list]Entry[7]: 33:33:00:01:00:03
注1：小插曲，因为每次开机都必须执行安装指令，安装完，重启配置几次后，再执行modprobe wilc-sdio，弹出以下信息
[ 658.706632] cfg80211: Loading compiled-in X.509 certificates for regulatory database
[ 658.878954] cfg80211: Loaded X.509 cert 'sforshee: 00b28ddf47aef9cea7'
[ 658.893357] wilc_sdio: module is from the staging directory, the quality is unknown, you have been warned.后就没有任何 东西。ifconfig -a后并没有出现wlan0网卡，但lsmod能看到cfg80211,wilc-sdio模块已安装成功。不停重启，断电均无效。后来检测，发现，芯片的复位引脚驱动不对，复位引脚短路。修复后就可以正常通讯了。
注2：加载wifi固件成功后，启动固件运行，会提示超时，Failed to start firmware。在如下位置 ，提示的不是成功，是超时失败，后来修复复位引脚后也成功，没找到其他原因。
[ 659.604947] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_firmware_download]Downloading Firmware ...
[ 659.613951] wilc_wlan_firmware_downloadDownloading firmware size = 144876
[ 659.634809] wilc_wlan_firmware_download Offset = 126916
[ 659.641579] wilc_wlan_firmware_download Offset = 144876
[ 659.646845] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_firmware_download]Download Succeeded
[ 659.660034] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_start_firmware]Starting Firmware ...
[ 659.671027] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_start_firmware]Waiting for FW to get ready ...
[ 659.797963] cfg_indicate_rx: Info message received
[ 659.803285] wilc_sdio mmc0:0001:1 wlan0: INFO [wilc_start_firmware]Failed to start firmware但按github源码的问题反馈里，维护人员一直强调，等待固件运行，会有个wifi模块会产生中断，如果我们的linux驱动没有接收到中断，会产生超时，错误这种 状态。
我也从板子上量了irq中断线，确实并没有产生中断。修复复位引脚后，wifi模块也能正常使用。好像就没有用外部中断线。
注3：在wilc-sdio.ko模块正确安装，且wlan0能运行后，调用reboot指令使系统复位，系统启动后，无法再加载wilc-sdio模块。
经测试发现逻辑：
a）复位重启前，ifconfig wlan0 down，重启后可正常安装
b）复位重启前，rmmod wilc-sdio卸载模块后，重启可正常安装
c) 在重启后，无法安装的条件 前，复位WIFI模块，失能WIFI模块，即（reset,en引脚拉低），再使能，再安装模块，均没有用。
d)复位后，但内核 不重启。此时，复位WIFI模块，重启后可正常安装
后经调试发现，只要WIFI正常启动后，没有去让网卡下线或卸载模块，WIFI模块一直处于正常工作 状态，而此时linux内核重启，会造成mmc0初始化失败，所以重启后安装时，mmc0无效无法安装。但这个错误，在安装时没有信息提示。
解决办法：
系统复位时，关机服务添加代码，ifconfig wlan0 down
在uboot阶段，控制WIFI模块的复位引脚，我们用的是BBB的UBOOT，所以直接在启动环境变量参数增加一个：gpio clear 54，置低复位脚，然后在启动内核时gpio set 54。
以上操作后，系统启动后，modproge wilc-sdio模块加载成功。
3.2 WIFI功能测试：
添加几个配置文件，以下摘抄手册，其中DHCP部分，我系统是systemd的启动方式，不一样，没有按下面的操作，我也滑额外的配置，目前能直接使用：
Modifying Configuration Files
To use the Wi-Fi module, the user must load a set of default configuration files on the prebuilt image.
These files can be modified as per the requirement described in the following section.
8.4.1
Wi-Fi Protected Access Supplicant
The reference configuration files for Wi-Fi Protected Access (WPA) supplicant are available in:
/etc/
directory. The configuration files for both Station and Access Point modes are available in the demo
prebuilt image.
8.4.1.1
Station Mode
The configuration file for Station mode
wilc_wpa_supplicant.conf
contains the following lines.
ctrl_interface=/var/run/wpa_supplicant
update_config=1
8.4.1.2
Access Point Open Security Mode
The Access Point (AP) mode configuration file with open security
wilc_hostapd_open.conf
contains
the following lines.
interface=wlan0
driver=nl80211
ctrl_interface=/var/run/hostapd
ssid=wilc1000_SoftAP
dtim_period=2
beacon_int=100
channel=7
hw_mode=g
max_num_sta=8
ap_max_inactivity=300
ATWILC1000/ATWILC3000
Running ATWILC
?
2019 Microchip Technology Inc.
User Guide
DS70005328C-page 27
8.4.1.3
Access Point Wired Equivalent Privacy Security Mode
The AP mode configuration file for Wired Equivalent Privacy (WEP) Security
wilc_hostapd_wep.conf
contains the following lines.
interface=wlan0
driver=nl80211
ctrl_interface=/var/run/hostapd
ssid=wilc1000_SoftAP
dtim_period=2
beacon_int=100
channel=7
hw_mode=g
max_num_sta=8
ap_max_inactivity=300
ieee80211n=1
auth_algs=1
######### WEP ###########
wep_default_key=0
wep_key0=1234567890
wep_key1="vwxyz"
wep_key2=0102030405060708090a0b0c0d
wep_key3=".2.4.6.8.0.23"
wep_key_len_broadcast=5
wep_key_len_unicast=5
wep_rekey_period=300
8.4.1.4
WPA Security Mode
The AP mode configuration file with WPA security
wilc_hostapd_wpa.conf
contains the following
lines.
interface=wlan0
driver=nl80211
ctrl_interface=/var/run/hostapd
ssid=wilc1000_SoftAP
dtim_period=2
beacon_int=100
channel=7
hw_mode=g
max_num_sta=8
ap_max_inactivity=300
ieee80211n=1
auth_algs=1
######### WPA/WPA2 ###########
wpa=3
wpa_passphrase=12345678
wpa_key_mgmt=WPA-PSK
wpa_pairwise=TKIP CCMP
rsn_pairwise=CCMP
8.4.2
Dynamic Host Configuration Protocol
The reference configuration file for the Dynamic Host Configuration Protocol (DHCP) server is available in
the
/etc/dhcp/dhcpd.conf
file.
ddns-update-style none;
default-lease-time 600;
max-lease-time 7200;
option subnet-mask 255.255.255.0;
option domain-name-servers 168.126.63.1, 164.124.101.2; # DNS Server IP
option domain-name “sample.example”; # domain name
subnet 192.168.0.0 netmask 255.255.255.0 {
range 192.168.0.100 192.168.0.110; # range ip
option broadcast-address 192.168.0.255;
option routers 192.168.0.1; # gateway ip
ATWILC1000/ATWILC3000
Running ATWILC
?
2019 Microchip Technology Inc.
User Guide
DS70005328C-page 28
}
Log-facility local7;
Note:?
Each value must be modified as per the test environment.
The location of the dhcpd.conf file should match the location defined in
/etc/init.d/S80dhcp
server
under:
test -f /etc/dhcp/dhcpd.conf || exit 0
.
8.4.3
radvd
For IPv6, the radvd configuration file is required. The reference file on the demo image is available in
the
/etc/radvd.conf
directory.
interface wlan0
{
AdvSendAdvert on;
prefix 2001:db8:0:2::/64
{
};
};
3.2.1 Station模式测试
手机开热点，测试指令如下：
// 以下指令是非加密连接。
# wpa_supplicant -iwlan0 -Dnl80211 -c /etc/wilc_wpa_supplicant.conf &
# wpa_cli -p/var/run/wpa_supplicant ap_scan 1
# wpa_cli -p/var/run/wpa_supplicant add_network
# wpa_cli -p/var/run/wpa_supplicant set_network 0 ssid '"User_AP"' // User_AP替换为热点SSID
# wpa_cli -p/var/run/wpa_supplicant set_network 0 key_mgmt NONE
# wpa_cli -p/var/run/wpa_supplicant select_network 0 // 这步才会连入手机热点，前面都没有效提示信息开始ping测试，由于我们的板子还有有线网口，所以ping 需要指定网卡。
ping -I wlan0 www.baidu.com 很不辛，ping外网不成功
另一台笔记本也接入同一个手机热点，接着ping笔记本IP
ping -I wlan0 192.168.73.55??
此时是ping成功的。
注：所以有个疑问，为什么ping外网没成功，笔记本连手机热点，是可能上网的。如果有朋友测试成功，知道原因，麻烦告知下，万分感谢。
TCP测试的，server? client的QT代码包分享,免分下载，希望CSDN不要调分：
TcpClient? :TcpClient测试-QT文档类资源-CSDN下载
TcpServer:TcpServer测试-QT文档类资源-CSDN下载
演示如下：服务器，本机IP，填写本地主机的IP即可。点监听，成功后会显示如下，监听按键变成断开，即成功。
如下，客户端，服务器IP填写已处于监听状态的服务器IP地址，点连接即可。整个TCP服务器，客户端在AM335x的板子上已测试通过，板子不方便截图，在Windows下运行截个图直观的展示下。
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参考：
https://github.com/linux4wilc/driver
AM335X BeagleBoneBlack wilc3000蓝牙wifi驱动移植_MC_J的博客-CSDN博客
一种调试IO方法参考：
?failed to get GPIO · Issue #49 · linux4wilc/driver · GitHub
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