Enable Web UI to setup Wifi

#1
  1. My goal is:
    Allow user to change wifi ssid and password using WebUI when the GPIO0 is pushed

  2. My actions are:
    Add - origin: https://github.com/mongoose-os-libs/wifi-setup-web-ui in the mos.yml lib section

  3. The result I see is:
    The WebUI works as expected, and then the AP is disabled

  4. My expectation & question is:
    After push the GPIO 0 (zero, or any other), the AP is up again and the user can change the wifi SSID and password

Check WiFi AP mode in C code
#2

Have a look at the provision library.

1 Like
#3

I use the following to turn AP on and off.
Took me a while to work out that the device config ap state does not change when you turn AP on/off, so I’m doing it explicitly. Probably means that this is not the right way to do it :slight_smile:

static void enable_ap(void)
{
  struct mgos_config_wifi_ap ap_cfg;
  memcpy(&ap_cfg, mgos_sys_config_get_wifi_ap(), sizeof(ap_cfg));
  ap_cfg.enable = true;
  int result = mgos_wifi_setup_ap(&ap_cfg);

  // Seems to be the easiest way to track AP enabled/disabled but it's not
  // updated when the AP is turned on like your would expect
  mgos_sys_config_set_wifi_ap_enable(true);

  LOG(LL_INFO, ("Enabling AP"));
}

static void disable_ap(void)
{
  struct mgos_config_wifi_ap ap_cfg;
  memcpy(&ap_cfg, mgos_sys_config_get_wifi_ap(), sizeof(ap_cfg));
  ap_cfg.enable = false;
  int result = mgos_wifi_setup_ap(&ap_cfg);

  // Seems to be the easiest way to track AP enabled/disabled but it's not
  // updated when the AP is turned on like your would expect
  mgos_sys_config_set_wifi_ap_enable(false);

  LOG(LL_INFO, ("Disabling AP"));
}
1 Like
Switching from STA Mode to AP mode
#4

Thanks for this suggestion. I will investigate it.

#5

This is also a good suggestion. I will consider.

#6

mos latest seems to have broken something here, but mos 2.19.1 is working for me

core dump log:

0x40103707 in esp32_wifi_set_mode (mode=WIFI_MODE_NULL)
    at /home/mongoose/deps/wifi/src/esp32/esp32_wifi.c:221
221         *((int *) 123) = 456;
#0  0x40103707 in esp32_wifi_set_mode (mode=WIFI_MODE_NULL)
    at /home/mongoose/deps/wifi/src/esp32/esp32_wifi.c:221
#1  0x401037c8 in esp32_wifi_remove_mode (mode=<optimized out>)
    at /home/mongoose/deps/wifi/src/esp32/esp32_wifi.c:285
#2  0x4010400c in mgos_wifi_dev_ap_setup (
    cfg=0x3ffb6330 <mgos_task_stack+7736>)
    at /home/mongoose/deps/wifi/src/esp32/esp32_wifi.c:458
#3  0x4010233d in mgos_wifi_setup_ap (cfg=0x3ffb6330 <mgos_task_stack+7736>)
    at /home/mongoose/deps/wifi/src/mgos_wifi.c:220
#4  mgos_wifi_setup_ap (cfg=0x3ffb6330 <mgos_task_stack+7736>)
    at /home/mongoose/deps/wifi/src/mgos_wifi.c:212
#5  0x400d7a6c in disable_ap ()
    at /home/mongoose/src/main.c:1565
#6  0x400dab03 in mgos_app_init ()
    at /home/mongoose/src/main.c:3136
#7  0x400d2d0a in mgos_init () at /mongoose-os/src/mgos_init.c:29
#8  0x400daf22 in mgos_init2 ()
    at /home/mongoose/deps/freertos/src/mgos_freertos.c:169
#9  0x400823cb in mgos_task (arg=0x0)
    at /home/mongoose/deps/freertos/src/mgos_freertos.c:180
#7

I’d suggest to open an issue against the wifi library.
The line *((int *) 123) = 456; was introduced by this commit.