/**
 *
 * \file    cpx.h
 * \brief   read and write DIO
 *
 * \author  Manuel Traut
 * \version 2006-10-06
 *
 */

#ifndef CPX_H
#define CPX_H

#include <iostream>

#include <sys/mman.h>
#include <sys/ioctl.h>
#include <fcntl.h>
#include <unistd.h>

// Device Nodes
#define CPX_Input     "/dev/iio2"
#define CPX_Input_1   "/dev/iio2_in"
#define CPX_Output_1  "/dev/iio2_out"

// Memory Addresses
#define PORT1_OUT     0x2c00
#define PORT2_OUT     0x3c00
#define PORT3_OUT     0x4c00

#define PORT1_IN      0x5c00
#define PORT2_IN      0x6c00
#define PORT3_IN      0x7c00 

#define PROT_READ     0x01
#define PROT_WRITE    0x02
#define MAP_SHARED    0x01
#define MAP_PRIVATE   0x02

// ioctl (file descriptor, CPX_DIO_IOCTL_SET_SIGNAL, irq_send_signal_param*)
// enable sending signal on interrupt
// cpx_dio_set_signal_param.signal = signal to be sent to process     
#define CPX_DIO_IOCTL_BASE 0xCD

typedef struct{
    int signal; // signal to be sent
    int pid;    // process id, signal should be sent to
}cpx_dio_set_signal_param;

#define CPX_DIO_IOCTL_ADD_SIG  _IOW(CPX_DIO_IOCTL_BASE, 3, cpx_dio_set_signal_param)
#define CPX_DIO_IOCTL_DEL_SIG  _IOW(CPX_DIO_IOCTL_BASE, 4, cpx_dio_set_signal_param)

class CPX{
  public:
    CPX();
    void set(short port, short value);
    short get(short port);
  private:
	int init();
	unsigned char *mapped_in;
    unsigned char *mapped_out;
    volatile u_char *DOUT;
    volatile u_char *DIN;
    cpx_dio_set_signal_param param;
};

#endif