Controllino MEGA – SD Card Logging

[LeonardClassen]

Hi all,

I am using the Controllino MEGA with a HW-125 SD Card module.
https://components101.com/modules/micro-sd-card-module-pinout-features-datasheet-alternatives.

I use the following code:

#include <controllino.h></controllino.h>

#include <sd.h></sd.h>

#include <spi.h></spi.h>

File myFile;

int pinCS = 53; // Pin 10 on Arduino Uno

void setup() {

Serial.begin(9600);

Serial.println(“start setup”);

// needs Controllino.h import

Controllino_RTC_init(); //FAQ#7: https://github.com/CONTROLLINO-PLC/CONTROLLINO_Library#faq

//pinMode(pinCS, OUTPUT);

pinMode(10, OUTPUT);

digitalWrite(10, HIGH);

// SD Card Initialization

if (SD.begin())

{

Serial.println(“SD card is ready to use.”);

} else

{

Serial.println(“SD card initialization failed”);

return;

}

// Create/Open file

myFile = SD.open(“test.txt”, FILE_WRITE);

// if the file opened okay, write to it:

if (myFile) {

Serial.println(“Writing to file…”);

// Write to file

myFile.println(“Testing text 1, 2 ,3…”);

myFile.close(); // close the file

Serial.println(“Done.”);

}

// if the file didn’t open, print an error:

else {

Serial.println(“error opening test.txt”);

}

// Reading the file

myFile = SD.open(“test.txt”);

if (myFile) {

Serial.println(“Read:”);

// Reading the whole file

while (myFile.available()) {

Serial.write(myFile.read());

}

myFile.close();

}

else {

Serial.println(“error opening test.txt”);

}

}

void loop() {

// empty

}

However, I get the error:

SD card initialization failed

I use the following pins on the controllino:

CS / SS is pin53.

What am I doing wrong?