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arduino-esp32-custom-lwip-p.../libraries/WiFi/examples/WiFiScan/README.md

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WiFiScan Example

This example demonstrates how to use the WiFi library to scan available WiFi networks and print the results.

Supported Targets

Currently this example supports the following targets.

Supported Targets ESP32 ESP32-S2 ESP32-C3

How to Use Example

Using Arduino IDE

  • Before Compile/Verify, select the correct board: Tools -> Board.
  • Select the COM port: Tools -> Port: xxx where the xxx is the detected COM port.

Using Platform IO

  • Select the COM port: Devices or setting the upload_port option on the platformio.ini file.

Example/Log Output

ets Jul 29 2019 12:21:46

rst:0x1 (POWERON_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
configsip: 0, SPIWP:0xee
clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
mode:DIO, clock div:1
load:0x3fff0030,len:1412
load:0x40078000,len:13400
load:0x40080400,len:3672
entry 0x400805f8
Setup done
scan start
scan done
17 networks found
1: IoTNetwork (-62)*
2: WiFiSSID (-62)*
3: B3A7992 (-63)*
4: WiFi (-63) 
5: IoTNetwork2 (-64)*
...

Troubleshooting

Important: Be sure you're using a good quality USB cable and you have enought power source for your project.

  • Programming Fail: If the programming/flash procedure fails, try to reduce the serial connection speed.
  • COM port not detected: Check the USB cable connection and the USB to Serial driver installation.

If the error persist, you can ask help at the official ESP32 forum or see Contribute.

Contribute

To know how to contribute to this project, see How to contribute.

If you have any feedback or issue to report on this example/library, please open an issue or fix it by creating a new PR. Contributions are more than welcome!

Before creating a new issue, be sure to try the Troubleshooting and to check if the same issue was already created by someone else.

Resources