nRF700X Wi-Fi driver
This driver implements the Wi-Fi® protocol for the nRF700X FullMAC series of devices. FullMAC devices implement the Wi-Fi protocol in the chipset. The driver configures the chipset and transfers the frames to and from the device to the networking stack.
nRF700X is a companion IC and can be used with any Nordic Semiconductor System-on-Chips (SoCs) such as the nRF53 and nRF91 Series SoCs.
You can enable the driver by using the
CONFIG_WIFI_NRF700X Kconfig option.
The following figure illustrates the architecture of the nRF700X Wi-Fi driver.
The nRF700X Wi-Fi driver follows an OS agnostic design, and the driver is implemented into OS agnostic and OS (Zephyr) specific implementation files.
The OS agnostic files are located in the
drivers/wifi/nrf700x/osal/ folder and the OS specific files are located in the
The driver is designed to be used with the Zephyr networking stack. It is implemented as a network interface driver.
The driver supports the following IEEE 802.11 features:
Wi-Fi 6 (802.11ax) support
WPA3/WPA2 personal security
IEEE 802.11 Power Save modes
Scan only mode
IEEE 802.11 Station (STA) mode
The following features are in the driver code but not yet supported:
IEEE 802.11 AP mode (Soft AP)
Wi-Fi Direct mode
Except for scan only mode, the driver uses host access point daemon (hostapd) to implement AP Media Access Control (MAC) Sublayer Management Entity (AP MLME) and wpa_supplicant to implement 802.1X supplicant.
The driver communicates with the nRF700X device using the QSPI/SPI interface. The driver uses the QSPI/SPI interface to send commands to the nRF700X device, and to transfer the data to and from the device. The nRF7002 DK uses QSPI whereas the nRF7002 EK uses SPI.
To connect the nRF7002 EK to the SoC, the
nrf7002ek_nrf7002 shield is required.
The nRF700X Wi-Fi driver supports Radio Test mode, which can be used to test the RF performance of the nRF700X device.
This is a build time option and can be enabled by using the
CONFIG_NRF700X_RADIO_TEST Kconfig option.
For more details about using this driver in Radio Test mode, see Wi-Fi: Radio test.
After the nrf700x driver has been initialized, the application will see it as an Ethernet interface. To use the Ethernet interface, the application can use Zephyr Network APIs.