Thanks, I'm with you thus far. But how can I know what the pointer is supposed to point to?

Here are all the valid options:

typedef enum{
ESP_NETIF_SUBNET_MASK = 1, /**< Network mask */
ESP_NETIF_DOMAIN_NAME_SERVER = 6, /**< Domain name server */
ESP_NETIF_ROUTER_SOLICITATION_ADDRESS = 32 ...

I'm trying to fix several issues related to DHCP, and I'm really struggling with the scarce documentation.

Does anyone know where to find documentation for this function? The opt_val parameter is critical, but I can't find any documentation for it.

esp_err_t esp_netif_dhcpc_option(esp_netif_t ...

I'm creating a captive portal to receive the user's home wifi credentials. As recommended, I set up a DNS server that reroutes all requests to my access point. This works fine with iPhone and Windows: both send well-formed UDP packages. However, the ESP doesn't receive any UDP information from the ...

Thanks for the link! On what pin does the reset pulse need to come in?

Thanks for this response. Plugging the USB evidently doesn't generate a strong enough pulse in my design. Is there a reference design for how to make this work?

Here is the current design:

I'm running power testing on my custom ESP32 PCB. The following code works great when entering sleep:


esp_sleep_enable_ext0_wakeup(gpio_num_t(CHARGER_PLUGGED_PIN), HIGH);
esp_deep_sleep(sleep_time);


The ESP wakes up after sleep_time. If the charger is plugged it wakes up immediately.

However ...

Thanks for your answer! Are you sure that nvs_set_blob uses wear leveling? It is really hard to tell from the documentation.

I'm loading and saving two structs from/to flash each boot. This will quickly add up to > 10k saves, so I need to implement some kind of wear management. I'm not sure what the best option is. I don't want to add extra power-consuming overhead, so I'm leaning toward lower-level operations. But I'm ...

I had this issue and just found a solution: there can't be any spaces in the path to /main. So all directories in the path need to be renamed, or you need to build somewhere else.