#include "stdafx.h"
#include <stdlib.h>
#include <time.h>	
#include <math.h>

#include "cusb.h"
#include "cusb.c"

#ifndef max
#define max(x, y) (((x) > (y)) ? (x) : (y))
#endif

#ifndef min
#define min(x, y) (((x) < (y)) ? (x) : (y))
#endif

extern "C" {
	void __declspec(dllexport) getADCs(int *, int);
};

#define FW_VERSION  "V100"
#define PIPE_AD7739 4

#ifdef __cplusplus
extern "C"{
#endif
  extern u8 fw_bin[];
#ifdef __cplusplus
}
#endif

HANDLE dev_handle;

BOOL APIENTRY DllMain( HANDLE hModule, 
                       DWORD  ul_reason_for_call, 
                       LPVOID lpReserved )
{
  switch(ul_reason_for_call){
    case DLL_PROCESS_ATTACH:
      if(cusb_init(0, &dev_handle, fw_bin, (s8 *)"RGIO", (s8 *)FW_VERSION)){
        return FALSE;
      }
      break;

    case DLL_PROCESS_DETACH:
      usb_close(&dev_handle);
      break;

    case DLL_THREAD_ATTACH:
    case DLL_THREAD_DETACH:
      break;
  }
  return TRUE;
}

void __declspec(dllexport) getADCs(int *iArray, int array_size)
{
  unsigned char buf[64];
  int index = 0;
 
  usb_bulk_read(&dev_handle, PIPE_AD7739, buf, sizeof(buf));
      
  long global_ms = 0;
  (global_ms |= buf[index++]);
  global_ms <<= 8;
  (global_ms |= buf[index++]);
  global_ms <<= 8;
  (global_ms |= buf[index++]);
  global_ms <<= 8;
  (global_ms |= buf[index++]);
  
  for(int ch = 0; ch < min(8, array_size); ch++){
    int *target = iArray + ch;
    (*target |= buf[index++]);
    *target <<= 8;
    (*target |= buf[index++]);
    *target <<= 8;
    (*target |= buf[index++]);
  }
}