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how to save data into file in keil IDE

Richard Lau

hi
I want to save my intermediate data into a file.
I tried to use fopen, fwrite, it can not even read. how should i use rtl.h ?

  int  count[10];
  FILE *fout;

  fout = fopen ("Counter.bin","w");
  if (fout != NULL) {
    fwrite (&count[0], sizeof (int), 10, fout);   // write an item 10 times to the file
    fclose (fout);

my keil version 4.6
ARM core is cortex-M0.
I am using the startup_MPS_CM0.s startup file to do the work.

Thanks for help!

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  • 0 in reply to ImPer Westermark

    Another thing to consider, is to have the program store the data you want to save into a RAM buffer or known address. Let the debugger retrieve this data and save to file. On another run, load this file and have the debugger send it to the RAM of your device.

    So similar operations as when programming, or reading, the contents of the flash memory.

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  • 0 in reply to ImPer Westermark

    Another thing to consider, is to have the program store the data you want to save into a RAM buffer or known address. Let the debugger retrieve this data and save to file. On another run, load this file and have the debugger send it to the RAM of your device.

    So similar operations as when programming, or reading, the contents of the flash memory.

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