AteqCom.cpp

// AteqCom.cpp : Defines the exported functions for the DLL application.
//

#include "stdafx.h"
#include <Windows.h>
#include <map>
#include "Serial.h"



extern "C"
{
	int nextSerialId = 1;
	std::map<int, CSerial*> createdSerials;




	UINT16 CRC16_2(unsigned char *buf, int len)
	{
		UINT16 crc = 0xFFFF;
		for (int pos = 0; pos < len; pos++)
		{
			crc ^= (UINT16)buf[pos];    // XOR byte into least sig. byte of crc

			for (int i = 8; i != 0; i--) {    // Loop over each bit
				if ((crc & 0x0001) != 0) {      // If the LSB is set
					crc >>= 1;                    // Shift right and XOR 0xA001
					crc ^= 0xA001;
				}
				else                            // Else LSB is not set
					crc >>= 1;                    // Just shift right
			}
		}

		return crc;
	}

	__declspec(dllexport) int AteqOpen(LPCTSTR comPort) {

		int serialId = 0;		
		CSerial* serial = new CSerial();
		try {			
			LONG res = serial->Open(comPort);
			if (res != 0)
				return -1;
			res = serial->Setup(CSerial::EBaud19200, CSerial::EData8, CSerial::EParEven, CSerial::EStop1);			
			if (res != 0) {
				serial->Close();
				return -2;
			}
			res = serial->SetupHandshaking(CSerial::EHandshakeOff);
			if (res != 0) {
				serial->Close();
				return -3;
			}
			res = serial->SetupReadTimeouts(CSerial::EReadTimeoutNonblocking);
			if (res != 0) {
				serial->Close();
				return -4;
			}
			serialId = nextSerialId++;			
			createdSerials[serialId] = serial;
			return serialId;
		}
		catch(...) {
			delete serial;
		}
		return 0;
	}

	__declspec(dllexport) int AteqGetStatus(int ateqId, BYTE* buffer, int bufferSize) {
		if (createdSerials.count(ateqId) == 1) {
			try {
				DWORD dwBytesRead = 0;
				BYTE bytes[] = { 255, 3, 0, 48, 0, 37, 145, 192 };
				LONG res = createdSerials[ateqId]->Write(bytes, sizeof(bytes));
				if (res != 0)
					return -3;
				res = createdSerials[ateqId]->WaitEvent(0, 100);
				/*if (res != 0)
					return -4; */
				res = createdSerials[ateqId]->Break();
				if (res != 0)
					return -5;
				res = createdSerials[ateqId]->Read(buffer, bufferSize, &dwBytesRead);
				if (res != 0)
					return -6;
				res = createdSerials[ateqId]->WaitEvent(0, 100);
				/*if (res != 0)
					return -7;*/
				return dwBytesRead;
			}
			catch (...) {
				return -2;
			}
		}

		return -1;
	}

	__declspec(dllexport) int AteqSetProgram(int ateqId, BYTE programNumber, BYTE* buffer, int bufferSize) {
			if (createdSerials.count(ateqId) == 1) {
				try {
					DWORD dwBytesRead = 0;
					BYTE bytes[] = { 255, 16, 2, 0, 0, 1, 2, programNumber, 0, 0, 0};

					UINT16 crc = CRC16_2(bytes, 9);
					bytes[10] = crc >> 8;
					bytes[9] = crc >> 0;

					LONG res = createdSerials[ateqId]->Write(bytes, sizeof(bytes));
					if (res != 0)
						return -3;
					BYTE bytes1[] = { 255, 16, 48, 4, 0, 1, 2, 0, 0, 223, 179 };

					createdSerials[ateqId]->Write(bytes1, sizeof(bytes1));
					
					res = createdSerials[ateqId]->WaitEvent(0,100);
					/*if (res != 0)
						return -4; */
					res = createdSerials[ateqId]->Break();
					if (res != 0)
						return -5;
					res = createdSerials[ateqId]->Read(buffer, bufferSize, &dwBytesRead);					
					if (res != 0)
						return -6;
					res = createdSerials[ateqId]->WaitEvent(0, 100);
					/*if (res != 0)
						return -7; */
					return dwBytesRead;
				}
				catch (...) {
					return -2;
				}
			}
			return -1;
	}

	__declspec(dllexport) int AteqStart(int ateqId, BYTE* buffer, int bufferSize) {
		if (createdSerials.count(ateqId) == 1) {
			try {
				DWORD dwBytesRead = 0;
				BYTE bytes[] = { 255,5,0,1,255,0,200,36 };
				LONG res = createdSerials[ateqId]->Write(bytes, sizeof(bytes));
				if (res != 0)
					return -3;
				res = createdSerials[ateqId]->WaitEvent(0,100);
				/*if (res != 0)
					return -4; */
				res = createdSerials[ateqId]->Break();
				if (res != 0)
					return -5;
				res = createdSerials[ateqId]->Read(buffer, bufferSize, &dwBytesRead);
				if (res != 0)
					return -6;
				res = createdSerials[ateqId]->WaitEvent(0, 100);
				/*if (res != 0)
					return -7; */
				return dwBytesRead;
			}
			catch (...) {
				return -2;
			}
		}

		return -1;
	}

	__declspec(dllexport) int AteqStop(int ateqId, BYTE* buffer, int bufferSize) {
		if (createdSerials.count(ateqId) == 1) {
			try {
				DWORD dwBytesRead = 0;
				
				BYTE bytes[] = { 255,5,0,2,255,0,56,36 };
				LONG res = createdSerials[ateqId]->Write(bytes, sizeof(bytes));
				if (res != 0)
					return -2;
				res = createdSerials[ateqId]->WaitEvent(0, 100);
				/*if (res != 0)
					return -3; */
				res = createdSerials[ateqId]->Break();
				if (res != 0)
					return -4;
				res = createdSerials[ateqId]->Read(buffer, bufferSize, &dwBytesRead);
				if (res != 0)
					return -5;
				res = createdSerials[ateqId]->WaitEvent(0, 100);
				/*if (res != 0)
					return -6; */
				return dwBytesRead;
			}
			catch (...) {
				return -2;
			}
		}

		return -1;
	}

	


	__declspec(dllexport) int AteqReset(int ateqId, BYTE* buffer, int bufferSize) {
		if (createdSerials.count(ateqId) == 1) {
			try {
				DWORD dwBytesRead = 0;
				BYTE bytes[] = { 255,5,0,0,255,0,153,228 };
				LONG res = createdSerials[ateqId]->Write(bytes, sizeof(bytes));
				if (res != 0)
					return -3;
				res = createdSerials[ateqId]->WaitEvent(0, 100);
				/*if (res != 0)
					return -4;*/
				res = createdSerials[ateqId]->Break();
				if (res != 0)
					return -5;
				res = createdSerials[ateqId]->Read(buffer, bufferSize, &dwBytesRead);
				if (res != 0)
					return -6;
				res = createdSerials[ateqId]->WaitEvent(0, 100);
				/*if (res != 0)
					return -7; */
				return dwBytesRead;
			}
			catch (...) {
				return -2;
			}
		}
		return -1;
	}

	__declspec(dllexport) int AteqClose(int ateqId) {
		if (createdSerials.count(ateqId) == 1) {
			try {
				LONG res = createdSerials[ateqId]->Close();
				if (res != 0)
					return 0;
				delete createdSerials[ateqId];
				createdSerials.erase(ateqId);
			}
			catch (...) {
				return 0;
			}
			return 1;
		}
		else
			return 0;
	}

}