#include <ctype.h>
#include <windows.h>

int (_stdcall *FX_OpenPort)(char **Port) = NULL;
void (_stdcall *FX_ClosePort)(void) = NULL;
int (_stdcall *FX_SendCommand)(char **Command) = NULL;
int (_stdcall *FX_GetReport)(char **Data) = NULL;
void (_stdcall *FX_Debug)(BOOL DbgFlag) = NULL;
// int (_stdcall *GetFXM)(char **Data) = NULL;
// void (_stdcall *Log)(int DbgNum) = NULL;
// int (_stdcall *ReadMonitor)(char **Data) = NULL;
// BOOL (_stdcall *EnumeratePorts)(char **PortName, char *PortNamePrefix) = NULL;

static HMODULE module;


int FX_Init(void)
{
	FARPROC funcp;
	
	module = LoadLibrary("KK_FX80E.dll");
	if (! module)
		return 0;
	
	funcp = GetProcAddress(module, "FX_OpenPort");
  	if (! funcp)
		goto error;
	FX_OpenPort = (void *)funcp;
	
	funcp = GetProcAddress(module, "FX_ClosePort");
  	if (! funcp)
		goto error;
	FX_ClosePort = (void *)funcp;
	
	funcp = GetProcAddress(module, "FX_SendCommand");
  	if (! funcp)
		goto error;
	FX_SendCommand = (void *)funcp;
	
	funcp = GetProcAddress(module, "FX_GetReport");
  	if (! funcp)
		goto error;
	FX_GetReport = (void *)funcp;
	
	funcp = GetProcAddress(module, "FX_Debug");
  	if (! funcp)
		goto error;
	FX_Debug = (void *)funcp;
	
	return 1;
	
error:
	FreeLibrary(module);
	return 0;
}


void FX_Free(void)
{
	FreeLibrary(module);	
}


int FX_Open(char *port)
{
	int rv = FX_OpenPort(&port);
#ifdef DEBUG
	if (! rv)
		fprintf(stderr, "%s\n", *port);
#endif
	return rv;
}


void FX_Close(void)
{
	FX_ClosePort();
}


int FX_Send(char *cmd)
{
	int rv = FX_SendCommand(&cmd);
#ifdef DEBUG
	if (! rv)
		fprintf(stderr, "%s\n", cmd);
#endif
	return rv;
}


char * FX_Recv(char **ret)
{
	int rv;
	char *data;
	do {
		data = ".";
		rv = FX_GetReport(&data);
	} while (! data);
#ifdef DEBUG
	if (! rv)
		fprintf(stderr, "%s\n", data);
#endif
	if (! rv)
		return NULL;
	if (ret)
		*ret = data;
	
	return data;
}