text: #include <kernel/drivers/timer.h>
  #include <kernel/hardware/tmu.h>
  #include <kernel/util/atomic.h>
  
  /*
  ** int timer_stop(int timer_ID)
  **
  ** @info
  ** This function will try to stop hardware timer.
  */
  int timer_stop(int timer_ID)
  {
  	extern struct timer_cache_s timercache[TIMER_NUMBER];
  
  	// Check bad ID
  	if (timer_ID < 0 || timer_ID >= TIMER_NUMBER)
  		return (-1);
  
  	// Start Atomic operation.
  	atomic_start();
  
  	// Start hardware timer.
  	SH7305_TMU.TSTR.BYTE &= ~(1 << timer_ID);
  
  	// Stop atomic operation and return.
  	atomic_stop();
  	return (0);
  }
  