Example #1
0
bool RS485::receive(frame &frame_receive){

//读取的字节数
	DWORD wCount;
	//读取状态
	int bReadStat = 0;
	char byte_buf = 0;
	char *frame_length = new char[2];
	char frame_type = 0;

//	printf("开始读取\n");
	//读取起始位
	ReadFile(hCom,&byte_buf,1,&wCount,NULL);
	if (byte_buf != 0x10)
	{
//		printf("未读取到起始位0x10\n");
		return false;
	}
	ReadFile(hCom,&byte_buf,1,&wCount,NULL);
	if(byte_buf != 0x02){
//		printf("未读取到到起始位0x02\n");
		return false;
	}
	//读取帧长度
	ReadFile(hCom,frame_length,2,&wCount,NULL);

	//读取帧类型
	ReadFile(hCom, &frame_type, 1,&wCount,NULL);
	frame_receive.set_type(frame_type);

	//读取帧
	ReadFile(hCom, frame_receive.getFrame() + 5, frame_receive.getLength() -5,&wCount,NULL);

	return true;
}