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Control Interface API's: Python Implementation

This document describes python API's provided for control interface. Please refer test.py to get an idea how to use these API's.

1. wifi_get_mac

This is used to retrieve the MAC address of ESP's station or softAP interface

Parameters

  • mode :
    • 1: station
    • 2: softAP

Return

String in form of "XX:XX:XX:XX:XX:XX" with MAC address of ESP interface mapping to mode or "failure" string if failed.

2. wifi_get_mode

This is used to retrieve the ESP32's Wi-Fi mode

Return

  • 0: null Mode, Wi-Fi mode not set
  • 1: station mode
  • 2: softAP mode
  • 3: station+softAP mode
  • "failure" string: if failed.

3. wifi_set_mode

This is used to set the ESP32's Wi-Fi mode

Parameters

  • mode :
    • 0: null Mode, Wi-Fi mode not set
    • 1: station mode
    • 2: softAP mode
    • 3: station+softAP mode

Return

"success" or "failure" string

4. wifi_set_mac

This is used to set MAC address for ESP's station or softAP interface

Parameters

  • mode :
    • 1: station mode
    • 2: softAP mode
  • mac : string in form of "XX:XX:XX:XX:XX:XX"

Return

"success" or "failure" string

Note

  • First set wifi mode before setting MAC address for respective station and softAP Interface
  • ESP32 station and softAP have different MAC addresses, do not set them to be the same.
  • The bit 0 of the first byte of ESP32 MAC address can not be 1. For example, the MAC address can set to be "1a:XX:XX:XX:XX:XX", but can not be "15:XX:XX:XX:XX:XX".
  • MAC address will get reset after esp restarts

5. wifi_set_power_save_mode

Set ESP32's power save mode

Parameters

  • power_save_mode :
    • 1: WIFI_PS_MIN_MODEM Minimum modem power saving. In this mode, station wakes up to receive beacon every DTIM period.
    • 2: WIFI_PS_MAX_MODEM Maximum modem power saving. In this mode, interval to receive beacons is determined by the listen_interval parameter in wifi set ap config function

Return

"success" or "failure" string

Note

  • ESP32 on boot is configured in WIFI_PS_MIN_MODEM

6. wifi_get_power_save_mode

Get the power save mode of ESP32

Return

  • 1: WIFI_PS_MIN_MODEM Minimum modem power saving. In this mode, station wakes up to receive beacon every DTIM period.
  • 2: WIFI_PS_MAX_MODEM Maximum modem power saving. In this mode, interval to receive beacons is determined by the listen_interval parameter in wifi set ap config function

Note

ESP32 on boot is configured in WIFI_PS_MIN_MODEM

7. wifi_set_ap_config

Set the AP config to which ESP32 station should connect

Parameters

  • ssid : string parameter, ssid of AP, max 32 bytes
  • pwd : string parameter, length of password should be 8~64 bytes ASCII
  • bssid : MAC address of AP, To differentiate between APs, In case multiple AP has same ssid
  • is_wpa3_supported : Status of WPA3 supplicant present on AP
    • False : Unsupported
    • True : Supported
  • listen_interval : Listen interval for ESP32 station to receive beacon when WIFI_PS_MAX_MODEM is set. Units: AP beacon intervals. Defaults to 3 if set to 0.

Return

"success" or "failure" string

8. wifi_get_ap_config

Get the AP config to which ESP32 station is connected

Return

Successful case : tuple of (ssid,bssid,channel,rssi,encryption_mode)

  • ssid : SSID of connected AP
  • bssid : MAC address of connected AP
  • channel : Channel ID, 1 ~ 10
  • rssi : RSSI signal strength
  • encryption_mode :
    • 0 : OPEN
    • 1 : WEP
    • 2 : WPA_PSK
    • 3 : WPA2_PSK
    • 4 : WPA_WPA2_PSK
    • 5 : WPA2_ENTERPRISE
    • 6 : WPA3_PSK
    • 7 : WPA2_WPA3_PSK

Failure cases

  • "not_connected" : In case ESP32 is not connected to any AP
  • "failure" string: In case of transport failure

9. wifi_disconnect_ap

Disconnect the AP to which ESP32 station is connected

Return

"success" or "failure" string

10. wifi_ap_scan_list

Set the AP config to which ESP32 station should connect

Return

Successful case : List of Aplist class instances(ssid,chnl,rssi,bssid,ecn)

  • ssid : SSID of AP
  • channel : Channel ID, in range of 1 to 10
  • bssid : MAC address of AP
  • rssi : RSSI signal strength
  • encryption_mode :
    • 0 : OPEN
    • 1 : WEP
    • 2 : WPA_PSK
    • 3 : WPA2_PSK
    • 4 : WPA_WPA2_PSK
    • 5 : WPA2_ENTERPRISE
    • 6 : WPA3_PSK
    • 7 : WPA2_WPA3_PSK

Failure case :

  • "failure" string

11. wifi_set_softap_config

Set the ESP32's softAP config

Parameters

  • ssid : String parameter, ssid of softAP
  • pwd : String parameter, length of password should be 8~64 bytes ASCII
  • chnl : Channel ID, In range of 1 to 11
  • ecn : Encryption method
    • 0 : OPEN
    • 2 : WPA_PSK
    • 3 : WPA2_PSK
    • 4 : WPA_WPA2_PSK
  • max_conn : Maximum number of stations can connect to ESP32 softAP (should be in range of 1 to 10)
  • ssid_hidden : softAP should broadcast its SSID or not
    • 0 : SSID should broadcast
    • 1 : SSID should not broadcast
  • bw : set bandwidth of ESP32 softAP
    • 1 : WIFI_BW_HT20
    • 2 : WIFI_BW_HT40

Return

"success" or "failure" string

12. wifi_get_softap_config

Get the ESP32's softAP config

Return

Success case : returns (ssid,pwd,chnl,ecn,max_conn,ssid_hidden,bw)

  • ssid : string parameter, ssid of softAP
  • pwd : string parameter, length of password should be 8~64 bytes ASCII
  • chnl : channel ID, In range of 1 to 11
  • ecn : Encryption method
    • 0 : OPEN
    • 2 : WPA_PSK
    • 3 : WPA2_PSK
    • 4 : WPA_WPA2_PSK
  • max_conn : Maximum number of stations can connect to ESP32 softAP (will be in range of 1 to 10)
  • ssid_hidden : softAP should broadcast its SSID or not
    • 0 : SSID is broadcasted
    • 1 : SSID is not broadcasted
  • bw : bandwidth of ESP32 softAP
    • 1 : WIFI_BW_HT20
    • 2 : WIFI_BW_HT40

Failure case :

  • "failure" string

13. wifi_stop_softap

Stop the ESP32's softAP

Return

"success" or "failure" string

14. wifi_connected_stations_list

Get the list of connected station to the ESP32 softAP.

Return

success case : list of Stationlist tuple(mac,rssi) Stations credentials::

  • mac : MAC address of station
  • rssi : RSSI signal strength

failure case:

  • "failure" string