Writing to STM32 but application not running ?

[antonius]

Dear Members,

I am writing to STM32 flash but application not running ?

I reset it, it's still not responding,

any ideas ? I can read and write to the chip,

thanks

[antonius]

this one is right ?

void SystemInit (void)

{

 /*!< Set MSION bit */

 RCC->CR |= (uint32_t)0x00000100;

 /*!< Reset SW[1:0], HPRE[3:0], PPRE1[2:0], PPRE2[2:0], MCOSEL[2:0] and MCOPRE[2:0] bits */

 RCC->CFGR &= (uint32_t)0x88FFC00C;

 /*!< Reset HSION, HSEON, CSSON and PLLON bits */

 RCC->CR &= (uint32_t)0xEEFEFFFE;

 /*!< Reset HSEBYP bit */

 RCC->CR &= (uint32_t)0xFFFBFFFF;

 /*!< Reset PLLSRC, PLLMUL[3:0] and PLLDIV[1:0] bits */

 RCC->CFGR &= (uint32_t)0xFF02FFFF;

 /*!< Disable all interrupts */

 RCC->CIR = 0x00000000;

#ifdef DATA_IN_ExtSRAM

 SystemInit_ExtMemCtl();

#endif /* DATA_IN_ExtSRAM */

#ifdef VECT_TAB_SRAM

 SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM. */

#else

 SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH. */

#endif

}

[antonius]

this block of code making the system freeze, I have no idea why, but when I take it out from the while loop, it's working

//Mount drive
    res = f_mount(&FatFs, "", 1); //1=mount now
    if (res != FR_OK) {
      printf("f_mount error (%i)\r\n", res);
      while(1);
    }
 
    DWORD free_clusters, free_sectors, total_sectors;
 
    FATFS* getFreeFs;
 
    res = f_getfree("", &free_clusters, &getFreeFs);
    if (res != FR_OK) {
      printf("f_getfree error (%i)\r\n", res);
      while(1);
    }
 
    total_sectors = (getFreeFs->n_fatent - 2) * getFreeFs->csize;
    free_sectors = free_clusters * getFreeFs->csize;
 
    printf("SD card stats:\r\n%10lu KiB total drive space.\r\n%10lu KiB available.\r\n", total_sectors / 2, free_sectors / 2);
        
    //Try to open file
    res = f_open(&fil, "test.txt", FA_WRITE | FA_CREATE_ALWAYS);
    if (res != FR_OK) {
      printf("f_open error (%i)\r\n");
      while(1);
    }
    printf("I was able to open 'test.txt' for reading!\r\n");
 
    BYTE readBuf[1024];
    
    //We can either use f_read OR f_gets to get data out of files
    //f_gets is a wrapper on f_read that does some string formatting for us
    //TCHAR* rres = f_gets((TCHAR*)readBuf, 1024, &fil); 
		 while (f_gets(line, sizeof line, &fil))
      
		printf(line);
    /*
		 if(rres != 0) {
      printf("Read string from 'test.txt' contents: %s\r\n", readBuf);
    } else {
      printf("f_gets error (%i)\r\n", res);
    }*/
    
    //Close file, don't forget this!
    f_close(&fil);
 
    res = f_open(&fil, "write.txt", FA_WRITE | FA_OPEN_ALWAYS | FA_CREATE_ALWAYS);
    if(res == FR_OK) {
      printf("I was able to open 'write.txt' for writing\r\n");
    } else {
      printf("f_open error (%i)\r\n", res);
    }
 
    strncpy((char*)readBuf, "a new file is made!", 19);
    UINT bytesWrote; 
    res = f_write(&fil, readBuf, 19, &bytesWrote);
    if(res == FR_OK) {
      printf("Wrote %i bytes to 'write.txt'!\r\n", bytesWrote);
    } else {
      printf("f_write error (%i)\r\n");
    }
 
    //Close file, don't forget this!
    f_close(&fil);
 
    //De-mount drive
    f_mount(NULL, "", 0);
  
    //while(1);