WifiSupport

Android WIFI Usage

Requirements

• AT91SAM9M10G45-EK or AT91SAM9X5EK Kit
• AT91SAM9M10G45-EK or AT91SAM9X5EK runing with Android OS. For flashing Android demo package to EK board, please reference page FlashPreBuildDemo
• H&D SPB104 SDIO wireless module, for more detail information please see here.

Setup WIFI

• Power up the system
  
  

• Navigate to home screen and click Settings icon
  
  

• Navigate to Wireless & networks menu and click it
  
  

• Click Wi-Fi to enable WIFI, if it is not be enabled
  
  

• Wi-Fi has been enabled
  
  

• Navigate to Wi-Fi settings menu, it will list the Wi-Fi networks
  
  
  
  

• Choose one AP and connect to it. If password is needed, please enter it. Then it will connect to the AP
  
  
  
  

• Browse network through the WIFI connection
  
  

Enable WIFI module

Take H&D SDIO WIFI module and SAM9M10 EK with Android4SAM 2.0 as an example

WIFI driver compiling

• Get the WIFI hardware module. For example, H&D SDIO WIFI module.
• Get the WIFI driver package and build it with the Linux kernel you're using.
• After a successful compiling, you will get the driver module .ko file.

Android modification

• Modify the "<android>/atmel/sam9m10/BoardConfig.mk" to set WIFI_MODULE := SDIO
• Copy the driver ko file to "<android>/device/atmel/common/config/wifi"
• Modify the "<android>/device/atmel/common/config/wifi/Android.mk" to add the driver file.
  For example: after $(LOCAL_PATH)/owl_sam9m10.ko:system/lib/modules/owl_sam9m10.ko add to this file, it looks like as following:
  

     ifeq ($(WIFI_MODULE),SDIO) 
     PRODUCT_COPY_FILES += \
          $(LOCAL_PATH)/owl_sam9m10.ko:system/lib/modules/owl_sam9m10.ko \
          $(LOCAL_PATH)/owl_sam9x5.ko:system/lib/modules/owl_sam9x5.ko \
          $(LOCAL_PATH)/wpa_supplicant.conf:system/etc/wifi/wpa_supplicant.conf
     endif
     

• Modify the "<android>/device/atmel/common/config/wifi/wpa_supplicant.conf" to specify the name of control interface.
  Take H&D as an example, it looks like: ctrl_interface=owl0

• Modify the <android>/device/atmel/sam9m10/init.atmel.rc
  Set the parameter of the script (e.g: owl0 is for H&D WIFI module)

      setprop wifi.interface owl0
  
      service wpa_supplicant /system/bin/wpa_supplicant -Dwext -iowl0 -c/data/misc/wifi/wpa_supplicant.conf
      

• Recompile the Android source code and regenerate the Android file system
• Flash the image to EK board and test the WIFI

---