| 1 |
28 |
ultra_embe |
//-----------------------------------------------------------------
|
| 2 |
|
|
// AltOR32
|
| 3 |
|
|
// Alternative Lightweight OpenRisc
|
| 4 |
|
|
// V2.0
|
| 5 |
|
|
// Ultra-Embedded.com
|
| 6 |
|
|
// Copyright 2011 - 2013
|
| 7 |
|
|
//
|
| 8 |
|
|
// Email: admin@ultra-embedded.com
|
| 9 |
|
|
//
|
| 10 |
|
|
// License: LGPL
|
| 11 |
|
|
//-----------------------------------------------------------------
|
| 12 |
|
|
//
|
| 13 |
|
|
// Copyright (C) 2011 - 2013 Ultra-Embedded.com
|
| 14 |
|
|
//
|
| 15 |
|
|
// This source file may be used and distributed without
|
| 16 |
|
|
// restriction provided that this copyright statement is not
|
| 17 |
|
|
// removed from the file and that any derivative work contains
|
| 18 |
|
|
// the original copyright notice and the associated disclaimer.
|
| 19 |
|
|
//
|
| 20 |
|
|
// This source file is free software; you can redistribute it
|
| 21 |
|
|
// and/or modify it under the terms of the GNU Lesser General
|
| 22 |
|
|
// Public License as published by the Free Software Foundation;
|
| 23 |
|
|
// either version 2.1 of the License, or (at your option) any
|
| 24 |
|
|
// later version.
|
| 25 |
|
|
//
|
| 26 |
|
|
// This source is distributed in the hope that it will be
|
| 27 |
|
|
// useful, but WITHOUT ANY WARRANTY; without even the implied
|
| 28 |
|
|
// warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
|
| 29 |
|
|
// PURPOSE. See the GNU Lesser General Public License for more
|
| 30 |
|
|
// details.
|
| 31 |
|
|
//
|
| 32 |
|
|
// You should have received a copy of the GNU Lesser General
|
| 33 |
|
|
// Public License along with this source; if not, write to the
|
| 34 |
|
|
// Free Software Foundation, Inc., 59 Temple Place, Suite 330,
|
| 35 |
|
|
// Boston, MA 02111-1307 USA
|
| 36 |
|
|
//-----------------------------------------------------------------
|
| 37 |
|
|
#ifndef __PERIPH_TIMER_H__
|
| 38 |
|
|
#define __PERIPH_TIMER_H__
|
| 39 |
|
|
|
| 40 |
|
|
#include "peripheral.h"
|
| 41 |
|
|
|
| 42 |
|
|
//--------------------------------------------------------------------
|
| 43 |
|
|
// Defines:
|
| 44 |
|
|
//--------------------------------------------------------------------
|
| 45 |
|
|
#define TIMER_BASE 0x12000100
|
| 46 |
|
|
|
| 47 |
|
|
//--------------------------------------------------------------------
|
| 48 |
|
|
// Class
|
| 49 |
|
|
//--------------------------------------------------------------------
|
| 50 |
|
|
class TimerPeripheral: public Peripheral
|
| 51 |
|
|
{
|
| 52 |
|
|
virtual void Reset(void)
|
| 53 |
|
|
{
|
| 54 |
|
|
tick_count = 0;
|
| 55 |
|
|
}
|
| 56 |
|
|
|
| 57 |
|
|
virtual void Clock(void)
|
| 58 |
|
|
{
|
| 59 |
|
|
static int ticks = 0;
|
| 60 |
|
|
|
| 61 |
|
|
// 1ms tick, 1MHz clock rate...
|
| 62 |
|
|
if (++ticks == 1000)
|
| 63 |
|
|
{
|
| 64 |
|
|
tick_count++;
|
| 65 |
|
|
ticks = 0;
|
| 66 |
|
|
}
|
| 67 |
|
|
}
|
| 68 |
|
|
|
| 69 |
|
|
virtual TRegister Access(TAddress addr, TRegister data_in, TRegister wr, TRegister rd)
|
| 70 |
|
|
{
|
| 71 |
|
|
switch (addr)
|
| 72 |
|
|
{
|
| 73 |
|
|
case TIMER_BASE:
|
| 74 |
|
|
return tick_count;
|
| 75 |
|
|
}
|
| 76 |
|
|
|
| 77 |
|
|
return 0;
|
| 78 |
|
|
}
|
| 79 |
|
|
|
| 80 |
|
|
virtual bool Interrupt(void)
|
| 81 |
|
|
{
|
| 82 |
|
|
return false;
|
| 83 |
|
|
}
|
| 84 |
|
|
|
| 85 |
|
|
virtual TAddress GetStartAddress() { return TIMER_BASE; }
|
| 86 |
|
|
virtual TAddress GetStopAddress() { return TIMER_BASE; }
|
| 87 |
|
|
private:
|
| 88 |
|
|
|
| 89 |
|
|
TRegister tick_count;
|
| 90 |
|
|
};
|
| 91 |
|
|
|
| 92 |
|
|
#endif
|
