title: When trying to build the code mentioned below the build output is showing an error message
body: <pre><code>#include &quot;stm32f4xx.h&quot;
  
  int main(void) {
  
            RCC-&gt;AHB1ENR |= 1;   
            GPIOA-&gt;MODER |=0x400;
                       
        while (1) {
  
                   GPIOA-&gt;ODR |= 0x20;
         
           }
  }
  </code></pre>
  <p>The above code is giving the below output. Tried debugging the issue but could not find any mistake. This is a simple STM32 program to turn on an led.</p>
  <p><strong>Build output:</strong></p>
  <pre><code>    Build started: Project: gpio
  
      *** Using Compiler 'V5.06 update 7 (build 960)',
      folder: 'C:\Keil_v5\ARM\ARMCC\Bin'
      Build target 'Target 1'
      system_stm32f4xx.c...
      &quot;no source&quot;: Error:  #219: error while deleting file &quot;.\objects\system_stm32f4xx.d&quot;: Permission denied
      RTE\Device\STM32F446RETx\system_stm32f4xx.c: 0 warnings, 1 error
      compiling main.c...
      &quot;.\Objects\gpio.axf&quot; - 1 Error(s), 0 Warning(s).
      Target not created.
      Build Time Elapsed:  00:00:01
  </code></pre>