SD.open(...) Timeout How can I set it?

[TiagoARAlves]

When I open a file, SD.open(...), if there is no microsd it takes 1s before telling me it gave an error. How can I set a shorter timeout?
It would be for a hard runtime software that would have to continue even without the microsd running, and could not be subject to stop for 1s.
I hope you can help me,
Thank you.

[pedrominatel]

Hi,

You can try the following code to detect the presence of a SD card attached:

uint8_t cardType = SD.cardType();

    if(cardType == CARD_NONE){
        Serial.println("No SD card attached");
        return;
    }

Change it according to your needs.