8.3.2 Serial Peripheral Interface Shield Board
The ATWILC3000 Shield Boards can operate using both SDIO and SPI, and are configured by installing or removing 0 Ohm resistors. By default, the boards are preconfigured for SDIO mode.
To switch to the SPI mode, the user must change the following resistors as shown in the following illustration.
The resistors marked with green arrows must be connected, and those marked with red arrows must be removed.
| Resistors to be Removed | Resistors to be Connected |
|---|---|
| R311 | R310 |
| R218 | R214 |
| R219 | R215 |
| R220 | R216 |
| R221 | R217 |
- Load the Wi-Fi SDIO driver module
using the following
command:
# insmode wilc-spi Registering wifi device Max scan ids= 10,Max scan IE len= 1000,Signal Type= 1,Interface Modes= 844 Initializing Locks ... WILC_SPI spi1.0: WILC SPI probe succes # ifconfig wlan0 up WILC_SPI spi32765.0 wlan0: INFO [wilc_mac_open]MAC OPEN[d477d800] wlan0 WILC POWER UP WILC_SPI spi32765.0 wlan0: INFO [wilc_init_host_int]Host[d477d800][d477cc00] WILC_SPI spi32765.0 wlan0: INFO [wilc_mac_open]*** re-init *** WILC_SPI spi32765.0 wlan0: INFO [wlan_init_locks]Initializing Locks ... WILC_SPI spi32765.0 wlan0: INFO [wilc_wlan_init]Initializing WILC_Wlan ... WILC_SPI spi32765.0 wlan0: INFO [init_chip]Bootrom sts = c WILC_SPI spi32765.0 wlan0: INFO [wilc_wlan_initialize]WILC Initialization done WILC_SPI spi32765.0 wlan0: INFO [init_irq]IRQ request succeeded IRQ-NUM= 137 on GPIO: 91 WILC_SPI spi32765.0 wlan0: INFO [wlan_initialize_threads]Initializing Threads ... WILC_SPI spi32765.0 wlan0: INFO [wlan_initialize_threads]Creating kthread for transmission WILC_SPI spi32765.0 wlan0: INFO [wlan_initialize_threads]Creating kthread for Debugging WILC_SPI spi32765.0 wlan0: INFO [wilc_wlan_get_firmware]Detect chip WILC3000 WILC_SPI spi32765.0 wlan0: INFO [wilc_wlan_get_firmware]loading firmware mchp/wilc3000_wifi_firmware.bin WILC_SPI spi32765.0 wlan0: INFO [wilc_wlan_get_firmware]WLAN firmware: mchp/wilc3000_wifi_firmware.bin WILC_SPI spi32765.0 wlan0: INFO [wilc_firmware_download]Downloading Firmware ... WILC_SPI spi32765.0 wlan0: INFO [wilc_wlan_firmware_download]Downloading firmware size = 137172 WILC_SPI spi32765.0 wlan0: INFO [wilc_wlan_firmware_download]Offset = 120228 WILC_SPI spi32765.0 wlan0: INFO [wilc_wlan_firmware_download]Offset = 137172 WILC_SPI spi32765.0 wlan0: INFO [wilc_firmware_download]Download Succeeded WILC_SPI spi32765.0 wlan0: INFO [linux_wlan_start_firmware]Starting Firmware ... WILC_SPI spi32765.0 wlan0: INFO [linux_wlan_start_firmware]Waiting for Firmware to get ready ... WILC_SPI spi32765.0 wlan0: INFO [linux_wlan_start_firmware]Firmware successfully started WILC_SPI spi32765.0 wlan0: INFO [wilc_wlan_initialize]WILC Firmware Ver = WILC_WIFI_FW_REL_15_00_RC4 Build: 9153 [root@buildroot ~]#