/usr/include/gpsim/spp.h is in gpsim-dev 0.29.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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Copyright (C) 2014 Roy R Rankin
This file is part of the libgpsim library of gpsim
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Lesser General Public
License as published by the Free Software Foundation; either
version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public
License along with this library; if not, see
<http://www.gnu.org/licenses/lgpl-2.1.html>.
*/
#ifndef __SPP_H__
#define __SPP_H__
#include "pic-processor.h"
#include "14bit-registers.h"
#include "pic-ioports.h"
#include "pir.h"
class SPP;
class SppSignalSource;
class PicPSP_PortRegister;
class PicTrisRegister;
class SPPCON : public sfr_register, public TriggerObject
{
public:
SPPCON(Processor *pCpu, const char *pName, const char *pDesc);
virtual void put(unsigned int new_value);
virtual void put_value(unsigned int new_value);
void set_spp(SPP *_spp) { spp = _spp; }
private:
SPP *spp;
};
class SPPCFG : public sfr_register, public TriggerObject
{
public:
SPPCFG(Processor *pCpu, const char *pName, const char *pDesc);
virtual void put(unsigned int new_value);
virtual void put_value(unsigned int new_value);
void set_spp(SPP *_spp) { spp = _spp; }
private:
SPP *spp;
};
class SPPEPS : public sfr_register, public TriggerObject
{
public:
SPPEPS(Processor *pCpu, const char *pName, const char *pDesc);
virtual void put(unsigned int new_value);
virtual void put_value(unsigned int new_value);
void set_spp(SPP *_spp) { spp = _spp; }
private:
SPP *spp;
};
class SPPDATA : public sfr_register, public TriggerObject
{
public:
SPPDATA(Processor *pCpu, const char *pName, const char *pDesc);
virtual void put(unsigned int new_value);
virtual unsigned int get();
virtual void put_value(unsigned int new_value);
void set_spp(SPP *_spp) { spp = _spp; }
private:
SPP *spp;
};
class SPP : public TriggerObject
{
public:
void initialize( PIR_SET *pir_set, PicPSP_PortRegister *port_set,
PicTrisRegister *port_tris,
SPPCON *_sppcon, SPPCFG *_sppcfg, SPPEPS *_sppeps,
SPPDATA *_sppdata, PinModule *pin_clk1spp, PinModule *pin_clk2spp,
PinModule *pin_oespp, PinModule *pin_csspp
);
void data_write(unsigned int data);
unsigned int data_read();
void eps_write(unsigned int data);
void cfg_write(unsigned int data);
void enabled(bool state);
virtual void callback();
SPP() : sppcon(0), sppcfg(0), sppeps(0), sppdata(0), state_enabled(0),
cfg_value(0), eps_value(0),
sig_oespp(0), sig_csspp(0), sig_clk1spp(0), sig_clk2spp(0),
active_sig_oe(false), active_sig_cs(false), active_sig_clk1(false),
active_sig_clk2(false)
{
}
~SPP();
enum {
SPPEN = 1<<0, // SPPCON
SPPOWN = 1<<1,
WS0 = 1<<0, // SPPCFG
WS1 = 1<<1,
WS2 = 1<<2,
WS3 = 1<<3,
CLK1EN = 1<<4,
CSEN = 1<<5,
CLKCFG0 = 1<<6,
CLKCFG1 = 1<<7,
ADDR0 = 1<<0, //SPPEPS
ADDR1 = 1<<1,
ADDR2 = 1<<2,
ADDR3 = 1<<3,
SPPBUSY = 1<<4,
WRSPP = 1<<6,
RDSPP = 1<<7
};
protected:
// cycle States
enum {
ST_IDLE = 0,
ST_CYCLE1,
ST_CYCLE2,
};
// I/O operatiom
enum {
ADDR_WRITE = 1,
DATA_WRITE,
DATA_READ
};
SPPCON *sppcon;
SPPCFG *sppcfg;
SPPEPS *sppeps;
SPPDATA *sppdata;
bool state_enabled;
unsigned int cfg_value;
unsigned int eps_value;
unsigned int data_value;
PinModule *pin_clk1spp;
PinModule *pin_clk2spp;
PinModule *pin_oespp;
PinModule *pin_csspp;
int cycle_state;
unsigned int io_operation;
SppSignalSource *sig_oespp;
SppSignalSource *sig_csspp;
SppSignalSource *sig_clk1spp;
SppSignalSource *sig_clk2spp;
bool active_sig_oe;
bool active_sig_cs;
bool active_sig_clk1;
bool active_sig_clk2;
PIR_SET *pir_set;
PicPSP_PortRegister *parallel_port;
PicTrisRegister *parallel_tris;
};
#endif // __SPP_H__
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