2022-05-20 05:50:08 -04:00
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| Supported Targets | ESP32 | ESP32-S2 | ESP32-S3 | ESP32-C3 |
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| ----------------- | ----- | -------- | -------- | -------- |
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2021-02-05 12:49:28 -05:00
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# Wi-Fi Scan Example
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(See the README.md file in the upper level 'examples' directory for more information about examples.)
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2017-09-28 04:17:06 -04:00
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2019-10-23 02:12:32 -04:00
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This example shows how to scan for available set of APs.
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2017-09-28 04:17:06 -04:00
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2021-02-05 12:49:28 -05:00
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## How to use example
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Before project configuration and build, be sure to set the correct chip target using `idf.py set-target <chip_name>`.
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### Hardware Required
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* A development board with ESP32/ESP32-S2/ESP32-C3 SoC (e.g., ESP32-DevKitC, ESP-WROVER-KIT, etc.).
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* A USB cable for Power supply and programming.
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### Configure the project
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2022-05-20 05:50:08 -04:00
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Open the project configuration menu (`idf.py menuconfig`).
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2021-02-05 12:49:28 -05:00
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In the `Example Configuration` menu:
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* Set the Example configuration.
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* Use `Max size of scan list` to set the maximum nunber of access points in the list.
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### Build and Flash
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Build the project and flash it to the board, then run the monitor tool to view the serial output:
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Run `idf.py -p PORT flash monitor` to build, flash and monitor the project.
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(To exit the serial monitor, type ``Ctrl-]``.)
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See the Getting Started Guide for all the steps to configure and use the ESP-IDF to build projects.
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* [ESP-IDF Getting Started Guide on ESP32](https://docs.espressif.com/projects/esp-idf/en/latest/esp32/get-started/index.html)
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* [ESP-IDF Getting Started Guide on ESP32-S2](https://docs.espressif.com/projects/esp-idf/en/latest/esp32s2/get-started/index.html)
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* [ESP-IDF Getting Started Guide on ESP32-C3](https://docs.espressif.com/projects/esp-idf/en/latest/esp32c3/get-started/index.html)
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## Example Output
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As you run the example, you will see the following log:
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```
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I (443) wifi:wifi firmware version: 6bff005
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I (443) wifi:wifi certification version: v7.0
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I (443) wifi:config NVS flash: enabled
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I (443) wifi:config nano formating: disabled
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I (453) wifi:Init data frame dynamic rx buffer num: 32
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I (453) wifi:Init management frame dynamic rx buffer num: 32
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I (463) wifi:Init management short buffer num: 32
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I (463) wifi:Init dynamic tx buffer num: 32
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I (473) wifi:Init static tx FG buffer num: 2
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I (473) wifi:Init static rx buffer size: 1600
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I (473) wifi:Init static rx buffer num: 10
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I (483) wifi:Init dynamic rx buffer num: 32
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I (483) wifi_init: rx ba win: 6
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I (493) wifi_init: tcpip mbox: 32
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I (493) wifi_init: udp mbox: 6
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I (493) wifi_init: tcp mbox: 6
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I (503) wifi_init: tcp tx win: 5744
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I (503) wifi_init: tcp rx win: 5744
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I (513) wifi_init: tcp mss: 1440
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I (513) wifi_init: WiFi IRAM OP enabled
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I (513) wifi_init: WiFi RX IRAM OP enabled
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I (533) phy_init: phy_version 300,6e46ba7,Jan 25 2021
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I (683) wifi:set rx active PTI: 0, rx ack PTI: 0, and default PTI: 0
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I (683) wifi:mode : sta (7c:df:a1:40:23:84)
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I (683) wifi:enable tsf
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I (2783) scan: Total APs scanned = 17
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I (2783) scan: SSID IoTNetwork
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I (2783) scan: RSSI -50
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I (2783) scan: Authmode WIFI_AUTH_WPA2_PSK
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I (2783) scan: Pairwise Cipher WIFI_CIPHER_TYPE_CCMP
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I (2793) scan: Group Cipher WIFI_CIPHER_TYPE_CCMP
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I (2793) scan: Channel 5
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I (2883) scan: SSID TP-Link_6872
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I (2883) scan: RSSI -70
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I (2883) scan: Authmode WIFI_AUTH_WPA_WPA2_PSK
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I (2893) scan: Pairwise Cipher WIFI_CIPHER_TYPE_CCMP
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I (2893) scan: Group Cipher WIFI_CIPHER_TYPE_CCMP
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I (2903) scan: Channel 11
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...
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```
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## Troubleshooting
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For any technical queries, please open an [issue](https://github.com/espressif/esp-idf/issues) on GitHub. We will get back to you soon.
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