ESP32 SPI

• 3V3 - 3.3V
• CS - GPIO 5
• MOSI - GPIO 23
• CLK - GPIO 18
• MISO - GPIO 19
• GND - GND

ESP32 Software SPI Interface

• SPI_CS = IO15 or IO27
• SPI_MOSI = IO13
• SPI_CLK = IO14

• SPI_MISO = IO12

• sketch refer to here:

SPI MOSI MISO SCLK CS VSPI GPIO 23 GPIO 19 GPIO 18 GPIO 5 HSPI GPIO 13 GPIO 12 GPIO 14 GPIO 15

hspi.begin(HSPI_CLK, HSPI_MISO, HSPI_MOSI, HSPI_SS);

#include "FS.h"
#include "SD.h"
#include "SPI.h"

SPIClass spiSD(HSPI);
#define SD_CS 15

void setup() {
    Serial.begin(115200);
    spiSD.begin(14, 12, 13, SD_CS ); //SCK, MISO, MOSI, SS //HSPI1 // hspi.begin(HSPI_CLK, HSPI_MISO, HSPI_MOSI, HSPI_SS);

    if (!SD.begin( SD_CS, spiSD )) {
        // if(!SD.begin()){
            Serial.println("Card Mount Failed");
            return;
        }
}

void loop() {
}