Hi Everyone I want to connect SD card to ESP32S3 via SDIO interface. But limitations in PCB design, I had to change the default pins SDIO. I wanted to use arduino ide for programming, is there a way to change the default SDIO pins in arduino to my custom pins?

to connect a micro SD card to a ESP32_S3_DevKit_1 I used the default pins // ESP32_S3_DevKit_1 connections // ESP32_S3 SCK pin GPIO12 to SD card SCK // ESP32_S3 MISO pin GPIO13 to SD card MISO // ESP32_S3 MOSI pin GPIO11 to SD card MOSI // ESP32_S3 SS pin GPIO 10 to SD card SS // connect E…

in arduino???? Do you mean you want to change your sketch to reflect new pins?

Define the SPI pins you want to use and start SPI with; SPI.begin(SCK, MISO, MOSI, CS);

I was able to setup the SD card via SPI and custom pins. But for more speed I want to use SDIO protocol. How can I change the SDIO pins in programming according to the designed board?

[image] benwade: But for more speed I want to use SDIO protocol. Do you mean using the SD_MMC.h driver ?

Hello, I am looking for using SD_MMC for the sdio access. Did the declaration below solve your problem? For me, it is the same issue for the board feather ESP32S3 No PsRAM.

Hello Yes, with this command SD_MMC.setPins(MMC STOCK,MMC CMD,MMC0,MMCD1,MMCD2,MMCD2) I was able to set the SDIO pins according to my custom pin.

Wich pin did you use for SCK, CMD, D0,D1,D2,D3? Could you post the final working code please? Did you add 10k pull-up on each pin?

[image] gregonthegit: Wich pin did you use for SCK, CMD, D0,D1,D2,D3? According to ESP32S3 datasheet, any desired pin can be used for SDIO. esp-idf/examples/storage/sd_card/sdmmc at master · espressif/esp-idf Espressif IoT Development Framework. Official development framework for …

Changing the default SDIO pins in Arduino IDE to connect ESP32S3 to SD Card

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srnet August 12, 2024, 5:04pm 8

SD_MMC.setPins(MMCSCK, MMCCMD, MMCD0, MMCD1, MMCD2, MMCD2);

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Changing the default SDIO pins in Arduino IDE to connect ESP32S3 to SD Card

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