Last error code: 701

Guillaume_Lescoute · June 21, 2021, 5:52pm

hello, i just tried to connect my esp32 in wifi to the new blynk. for this i use “edgent” example.
But I meet an error: 701

How can I correct this error?

12:28:06.326 -> [151443] Sending board info...
12:28:12.214 -> [157334] Scanning networks...
12:28:17.531 -> [162654] Found networks: 18
12:28:47.025 -> [192153] Applying configuration...
12:28:47.025 -> [192154] WiFi SSID: GUILLAUME 4147 Pass: 74W407o
12:28:47.025 -> [192154] Blynk cloud: lAe_bMwxYG5jrQQEODWTw-wRo8f6ITZ_ @ blynk.cloud:443
12:28:47.025 -> [192159] CONFIGURING => SWITCH_TO_STA
12:28:47.073 -> [192161] Switching to STA...
12:28:48.212 -> [193313] SWITCH_TO_STA => CONNECTING_NET
12:28:48.212 -> [193313] Connecting to WiFi: GUILLAUME 4147
12:29:18.194 -> [223314] Last error code: 701
12:29:18.290 -> [223392] Configuration stored to flash
12:29:18.290 -> [223392] CONNECTING_NET => ERROR
12:29:28.294 -> [233401] Restarting after error.
12:29:28.294 -> ets Jun  8 2016 00:22:57
12:29:28.294 -> 
12:29:28.294 -> rst:0xc (SW_CPU_RESET),boot:0x13 (SPI_FAST_FLASH_BOOT)
12:29:28.294 -> configsip: 0, SPIWP:0xee
12:29:28.294 -> clk_drv:0x00,q_drv:0x00,d_drv:0x00,cs0_drv:0x00,hd_drv:0x00,wp_drv:0x00
12:29:28.294 -> mode:DIO, clock div:1
12:29:28.294 -> load:0x3fff0018,len:4
12:29:28.294 -> load:0x3fff001c,len:1216
12:29:28.294 -> ho 0 tail 12 room 4
12:29:28.294 -> load:0x40078000,len:10944
12:29:28.341 -> load:0x40080400,len:6388
12:29:28.341 -> entry 0x400806b4
12:29:28.822 -> [241]

Dmitriy · June 22, 2021, 1:04pm

@vshymanskyy please advise.

vshymanskyy · June 22, 2021, 1:16pm

github.com

blynkkk/blynk-library/blob/66e44f84ac428e6f252044cabd23bea1ba45781f/examples/Blynk.Edgent/Edgent_ESP32/ConfigStore.h#L7



#define CONFIG_FLAG_VALID       0x01
#define CONFIG_FLAG_STATIC_IP   0x02

#define BLYNK_PROV_ERR_NONE     0      // All good
#define BLYNK_PROV_ERR_CONFIG   700    // Invalid config from app (malformed token,etc)
#define BLYNK_PROV_ERR_NETWORK  701    // Could not connect to the router
#define BLYNK_PROV_ERR_CLOUD    702    // Could not connect to the cloud
#define BLYNK_PROV_ERR_TOKEN    703    // Invalid token error (after connection)
#define BLYNK_PROV_ERR_INTERNAL 704    // Other issues (i.e. hardware failure)

struct ConfigStore {
  uint32_t  magic;
  char      version[15];
  uint8_t   flags;

  char      wifiSSID[34];

The device could not connect to the router. Maybe password is invalid, or wifi signal is low.

Guillaume_Lescoute · June 22, 2021, 6:15pm

@vshymanskyy thank; I found my mistake

kuhaziq · November 7, 2022, 2:58am

bro how did u solve it? help me

CedarwoodSpas · March 17, 2025, 11:01pm

I just had this problem with a board that was previously connecting just fine. I spent the day chasing down the problem.

The fix for me was to select Erase All Flash Before Sketch Upload in the arduino esp32 tool settings. I had to manually install the code again of course, but my wifi started working perfectly again afterwards and successfully did an OTA update. I started having the error after multiple OTA updates, and I wonder if there is something in Blynk Edgent causing a pile up of stored wifi credentials and causing and error when connecting.