The Library Runs Only Once about rp2040_sd HOT 1 CLOSED

Thanks for your interest in the library.

You have to know that the examples are just simple examples, written as a proof of concepts to demonstrate the basic features of the library, how to use the basic functions and you can't expect it to run in all use cases.

For example, the while (!Serial); in setup()

// Open serial communications and wait for port to open:
Serial.begin(115200);
while (!Serial);

the sole purpose is for you to read the debugging messages in Serial / USB port and have basic knowledge to debug, if having issue.

When you remove the USB/Serial port, the system will hang there, waiting for Serial port to be ready.

Try to remove/comment out that while (!Serial); line, it'll possibly be OK for you.

Also check you power as it seems you got big issue with the power, leading to corruption of data/flash/bootloader, ???/etc. if you can't restart when repower it from USB.

That's all I can help. If you have further issue, I suggest you post issue on Arduino Forum to ask for help.

Good Luck,

from rp2040_sd.