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hoon/esp32-example.c

Created December 23, 2017 07:55
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Correct place to call tcpip_adapter_set_hostname() to set Wi-Fi client host name in ESP-IDF
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esp32-example.c
ESP_ERROR_CHECK( esp_wifi_set_config(WIFI_IF_STA, &sta_config) );
ESP_ERROR_CHECK( esp_wifi_start() );
ESP_ERROR_CHECK(
tcpip_adapter_set_hostname(TCPIP_ADAPTER_IF_STA, "custom-hostname") );
ESP_ERROR_CHECK( esp_wifi_connect() );
@hoon
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hoon commented Dec 23, 2017

The correct place to call

tcpip_adapter_set_hostname(TCPIP_ADAPTER_IF_STA, "custom-hostname")

is after esp_wifi_start() is called but before esp_wifi_connect() is called.

@pitrk
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pitrk commented Aug 29, 2020 •
edited
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Thanks! That saved me a lot of time.

OK, I had some problems with that. You cannot run this function twice - it leads to panic. But there are other ways:

  • set CONFIG_LWIP_LOCAL_HOSTNAME value in menuconfig (Component Config -> LWIP -> Local netif hostname) or
  • use tcpip_adapter_set_hostname function.

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