fast_scan
Overview
This example demonstrates how to use Wi-Fi to quickly scan the functional connection AP.
It supports fast scan and full-channel scan.
Fast Scan: In this mode, the scan ends as soon as a matching AP is detected, even if all channel have not been fully scanned. You can set a threshold for signal strength and select the desired authentication mode provided by the AP. The Wi-Fi driver will ignore APS that do not meet the above criteria.Full-Channel Scan: Only end when the scan is complete. The ranking method of APS includes signal strength and authentication mode. After scanning, the Wi-Fi driver selects the most suitable AP.
After scanning, Wi-Fi will try to connect. In most cases, the AP with the best signal strength is connected.
Requirements
A properly connected AP is required.
Configure WiFi SSID and WiFi Password in menuconfig .
Building and Flashing
Example Location： examples/wifi/fast_scan
For compilation, burning, and more, please refer to: Quick Start Guide
Running Result
Upon successful execution, the following logs will be output(Due to possible differences between versions, specific details shall be subject to the actual version used)
I/fast scan [2.248] fast_scan finished.
D/wifi [7.218] distribution event 1
D/wifi [7.222] sta connected 42-C1-82-80-2A-15 channel 6 authmode 3
I/fast scan [8.046] got ip: 192.168.3.102
D/wifi [8.050] distribution event 0
D/wifi [8.056] sta got ip 192.168.3.102