include/asm-nios2nommu/timer_struct.h

   1
   2 // ----------------------------------------------
   3 // Timer Peripheral
   4
   5 // Timer Registers
   6 typedef volatile struct
   7         {
   8         int np_timerstatus;  // read only, 2 bits (any write to clear TO)
   9         int np_timercontrol; // write/readable, 4 bits
  10         int np_timerperiodl; // write/readable, 16 bits
  11         int np_timerperiodh; // write/readable, 16 bits
  12         int np_timersnapl;   // read only, 16 bits
  13         int np_timersnaph;   // read only, 16 bits
  14         } np_timer;
  15
  16 // Timer Register Bits
  17 enum
  18         {
  19         np_timerstatus_run_bit    = 1, // timer is running
  20         np_timerstatus_to_bit     = 0, // timer has timed out
  21
  22         np_timercontrol_stop_bit  = 3, // stop the timer
  23         np_timercontrol_start_bit = 2, // start the timer
  24         np_timercontrol_cont_bit  = 1, // continous mode
  25         np_timercontrol_ito_bit   = 0, // enable time out interrupt
  26
  27         np_timerstatus_run_mask    = (1<<1), // timer is running
  28         np_timerstatus_to_mask     = (1<<0), // timer has timed out
  29
  30         np_timercontrol_stop_mask  = (1<<3), // stop the timer
  31         np_timercontrol_start_mask = (1<<2), // start the timer
  32         np_timercontrol_cont_mask  = (1<<1), // continous mode
  33         np_timercontrol_ito_mask   = (1<<0)  // enable time out interrupt
  34         };
  35
  36 // Timer Routines
  37 int nr_timer_milliseconds(void);        // Starts on first call, hogs timer1.
  38