Code doesn't save credentials

[gibzwein]

Hi there,
I run Your code, and it seems to not save credentials.

2000-01-01 00:31:14 [info     / 106kB] > GET /generate_204 (200 OK) [331ms]
Saving wifi credentials...
2000-01-01 00:31:41 [debug    / 103kB] > parsed template: ap_templates/configured.html (took 44 ms)
2000-01-01 00:31:41 [info     / 102kB] > POST /configure (200 OK) [725ms]
2000-01-01 00:31:41 [debug    /  96kB] > parsed template: ap_templates/redirect.html (took 29 ms)
2000-01-01 00:31:42 [info     /  95kB] > GET /generate_204 (200 OK) [1240ms]
Resetting...
ets Jun  8 2016 00:22:57

rst:0xc (SW_CPU_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:2
load:0x3fff0030,len:4728
load:0x40078000,len:14888
load:0x40080400,len:3368
entry 0x400805cc
Entering setup mode...
2000-01-01 00:31:44 [info     / 129kB] > starting catch all dns server on port 53
2000-01-01 00:31:44 [info     / 127kB] > starting web server on port 80

after some debugging:

try:
    print(f"Trying to connect to wifi")
    os.stat(WIFI_FILE)
    print(f"wifi file found")

    # File was found, attempt to connect to wifi...
    with open(WIFI_FILE) as f:
        print(f"wifi file loaded")
        wifi_current_attempt = 1
        wifi_credentials = json.load(f)
        print(f"wifi credentials loaded")
        
        while (wifi_current_attempt < WIFI_MAX_ATTEMPTS):
            ip_address = connect_to_wifi(wifi_credentials["ssid"], wifi_credentials["password"])
            print(f"I am here now")

            if is_connected_to_wifi():
                print(f"Connected to wifi, IP address {ip_address}")
                break
            else:
                wifi_current_attempt += 1
                
        if is_connected_to_wifi():
            application_mode()
        else:
            
            # Bad configuration, delete the credentials file, reboot
            # into setup mode to get new credentials from the user.
            print("Bad wifi connection!")
            print(wifi_credentials)
            os.remove(WIFI_FILE)
            machine_reset()

except Exception:
    # Either no wifi configuration file found, or something went wrong, 
    # so go into setup mode.
    print(f"Something went wrong")
    setup_mode()

rst:0xc (SW_CPU_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:2
load:0x3fff0030,len:4728
load:0x40078000,len:14888
load:0x40080400,len:3368
entry 0x400805cc
Trying to connect to wifi
wifi file found
wifi file loaded
wifi credentials loaded
Something went wrong
Entering setup mode...
2000-01-01 01:14:30 [info     / 128kB] > starting catch all dns server on port 53
2000-01-01 01:14:30 [info     / 126kB] > starting web server on port 80

[simonprickett]

Hi there - I'll try and investigate. In order to reproduce I might need to know something about your credentials (please don't send me your SSID and password or post them here though!). Does the SSID and/or password have any "special" characters in it (Other than 0-9 a-z A-Z). Knowing this might help me reproduce.

[tristanwilson111]

Hey there, just following up as I loaded this onto my Pico W, connected my Pico to USB power that is not connected to my VSCode machine, and went through the Wifi setup.

After disconnecting the Pico from power and powering it back on, after a minute I was able to reconnect to the Pico using the same IP address. I believe the credentials are stored as intended @simonprickett. Agreed that it may be an issue with special characters in some instances, my SSID and password are only alphanumeric.