Got a unknown question?

Using Arduino Programming Questions
1

Hi all.
I am running a multi_sub folders sketch which used libraries:

#include <TJpg_Decoder.h>
#include "SPI.h"
#include <TFT_eSPI.h>   
#include <TinyGPS++.h>

in setup(){
....

 if (!SD.begin(14)) {
    Serial.println("Card Mount Failed");
    return;
  }

.......

}

one sub-folder:

void xxx(){
......................
 File GPSDATAlogIDr = SD.open("/test.txt");
..........................
}

not have:

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

all compiling passed.

why and how 'SD.begin(14)' without SD.h
where possibly defined "File" without a SD library?

any clue thankful.

Adam

2

Show complete code in code brackets and also,
Tick show verbose output during compilation and copy results of all compilation results here in code brackets.

1 Like
3

Ni hao. @shanren - When you have questions concerning library files, have a look inside the repositories... look in the ".h" for other #include files, like this... where you will find SD.h...

1 Like
4

Great!
got the point.
Thank you.

5

usr doesn't get it. ineff. comstyle