ESP32, Wi-Fi, smart_config

ESP32, Wi-Fi, smart_config

Google Play를 통해 Esp8266_SmartConfig 앱을 다운로드받을 수 있습니다.

EPS32 부팅 후 패킷 스니핑 상태를 유지합니다.
안드로이드 Esp8266_SmartConfig 앱에서 wifi ssid, passwd를 입력하면

ESP32 보드에서 이 패킷을 스니핑하여 외부 AP와 연결합니다.

즉, APP에서 ssid, passwd를 wifi 형태로 브로드캐스팅하면

ESP32가 패킷 스니핑으로 정보를 취한 다음 외부 wifi와 연결하는 방식입니다.

0. 참고 사이트

• esp-idf/examples/wifi/smart_config/
• https://esp-idf.readthedocs.io/en/latest/api-reference/wifi/esp_smartconfig.html#
• https://github.com/espressif/esp-idf/tree/020ade652d9b6b0b87b0bebe176a150cc4407749/examples/wifi/smart_config
  
• https://github.com/EspressifApp/EsptouchForAndroid
• https://github.com/EspressifApp/EsptouchForIOS
  

1. 모듈

2. 보드 연결

3. 소스 설명

4. 소스

https://github.com/sglee0223/esp32/tree/master/smart_config

5. 결과 확인

I (0) cpu_start: App cpu up. I (356) heap_init: Initializing. RAM available for dynamic allocation: I (363) heap_init: At 3FFAE6E0 len 00001920 (6 KiB): DRAM I (369) heap_init: At 3FFB9748 len 000268B8 (154 KiB): DRAM I (375) heap_init: At 3FFE0440 len 00003BC0 (14 KiB): D/IRAM I (381) heap_init: At 3FFE4350 len 0001BCB0 (111 KiB): D/IRAM I (388) heap_init: At 40090450 len 0000FBB0 (62 KiB): IRAM I (394) cpu_start: Pro cpu start user code I (77) cpu_start: Starting scheduler on PRO CPU. I (0) cpu_start: Starting scheduler on APP CPU. I (159) wifi: wifi driver task: 3ffc0f48, prio:23, stack:3584, core=0 I (159) wifi: wifi firmware version: 633012a I (159) wifi: config NVS flash: enabled I (159) wifi: config nano formating: disabled I (159) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE I (169) system_api: Base MAC address is not set, read default base MAC address from BLK0 of EFUSE I (209) wifi: Init dynamic tx buffer num: 32 I (209) wifi: Init data frame dynamic rx buffer num: 32 I (209) wifi: Init management frame dynamic rx buffer num: 32 I (209) wifi: Init static rx buffer size: 1600 I (209) wifi: Init static rx buffer num: 10 I (219) wifi: Init dynamic rx buffer num: 32 I (279) phy: phy_version: 3960, 5211945, Jul 18 2018, 10:40:07, 0, 0 I (279) wifi: mode : sta (30:ae:a4:15:20:9c) I (329) smartconfig: SC version: V2.7.3 I (5149) wifi: ic_enable_sniffer I (5149) sc: SC_STATUS_FINDING_CHANNEL I (15629) smartconfig: TYPE: ESPTOUCH I (15629) smartconfig: T|PHONE MAC:d0:f8:8c:2c:3c:49 I (15629) smartconfig: T|AP MAC:88:36:6c:32:21:a4 I (15629) sc: SC_STATUS_GETTING_SSID_PSWD I (18179) smartconfig: T|pswd: 11111111 I (18179) smartconfig: T|ssid: iptime I (18179) smartconfig: T|bssid: 88:36:6c:32:21:a4 I (18179) wifi: ic_disable_sniffer I (18179) sc: SC_STATUS_LINK I (18189) sc: SSID:iptime I (18189) sc: PASSWORD:19840223 I (18339) wifi: n:1 0, o:1 0, ap:255 255, sta:1 0, prof:1 I (19319) wifi: state: init -> auth (b0) I (19319) wifi: state: auth -> assoc (0) I (19329) wifi: state: assoc -> run (10) I (19759) wifi: connected with iptime, channel 1 I (19809) wifi: pm start, type: 1 I (20659) event: sta ip: 192.168.0.9, mask: 255.255.255.0, gw: 192.168.0.1 I (20659) sc: WiFi Connected to ap I (23719) sc: SC_STATUS_LINK_OVER I (23719) sc: Phone ip: 192.168.0.5 I (23719) sc: smartconfig over