8 years, 7 months ago.

Increment File names if they are already present in the file system.

This is my first program. with mbed, and my experience is with C as i am an electrical engineer and do not have much programing experiance.

Anyway.

I am eventualy creating a stand alone CAN data logging system that will have a small batter back and will desing a BMS system..

I have the USBMSD host set up from the handbook,

I want to check the file system for a peticualr file name incrementation, and if that file already exists, it will increment the next file.

Eventually this will be a time stamp, but for now i just want the filet to be name test1, test2, test3 and so on.

Everythign ive tried to do with my basic C knowledge has lead to many errors.

This is the base code.

1. include "mbed.h"
2. include "USBHostMSD.h"

DigitalOut led(LED1);

void msd_task(void const *) {

USBHostMSD msd("usb"); int i = 0;

while(1) {

try to connect a MSD device while(!msd.connect()) { Thread::wait(10); }

in a loop, append a file if the device is disconnected, we try to connect it again while(1) {

append a file FILE * fp = fopen("/usb/test1.txt", "a");

if (fp != NULL) { fprintf(fp, "Hello fun SD Card World: %d!\r\n", i++); printf("Goodbye World!\r\n"); fclose(fp); } else { printf("FILE == NULL\r\n"); }

Thread::wait(10);

if device disconnected, try to connect again if (!msd.connected()) break; }

} }