title: Embedded system Can we use any function inside ISR?
body: <p>I stumbled upon a this embedded system question, can we call an function inside an ISR ?
  Working ARM Cortex M4, Have called function many times from ISR without any fault.</p>
  
  <p>I assume behavior will be same for other micro controller as well or am i wrong ?</p>
  
  <p>Note : Please ignore calling an function in ISR would increase my ISR time in turn increasing the interrupt latency.</p>