ESP32 Forum

Posted: **Wed Sep 03, 2025 5:22 pm**

Try it without SD card, and it will work. Or specify SDIO1 (slot 0) because examples use same SDIO2 for both SD card and SDIO WIFI.

Code: Select all

    sdmmc_host_t host = SDMMC_HOST_DEFAULT();
    host.slot = SDMMC_HOST_SLOT_0;

Posted: **Wed Sep 10, 2025 11:36 am**

I have tried, but no luck yet.!

I get the following error message.

E (587) sdmmc_io: sdmmc_io_rw_extended: sdmmc_send_cmd returned 0x107
E (593) esp_host: read ESP_SLC_CONF1_REG error 0x107
E (598) esp_host: esp_extconn_sdio_init(210): esp host init slave link failed

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