class comport

hide all comport I/O complexity

Public Methods

comport( const std::string &comport_name )

arg is com1 or com2

void init()

init only there

void shutdown()

~comport()

bool wait_comport_event()

this is a blocking call which does not returns until some activity on port happens

text_data* get_data()

fill given structures with data

Private Fields

std::string portname

HANDLE port_h

open this with CreateFile

mutex shutdown_mutex

mutex to lock shutdown procedure

OVERLAPPED os

allows background data loading

DWORD dwEvtMask

this var just keep the status of previous call of wait_comport_event()

std::string internal_buffer

internal buffer where get_data function places intermediate data

std::string portname

HANDLE port_h

open this with CreateFile

mutex shutdown_mutex

mutex to lock shutdown procedure

OVERLAPPED os

allows background data loading

DWORD dwEvtMask

this var just keep the status of previous call of wait_comport_event()

std::string internal_buffer

internal buffer where get_data function places intermediate data

comport( const std::string &comport_name )

arg is com1 or com2. Do not connect immediately

void init()

init only there

void shutdown()

~comport()

bool wait_comport_event()

this is a blocking call which does not returns until some activity on port happens. We can do that because this thread have nothing to do if no data in port. It returns true if new data is awailable. It happens that it returns false if new event is coming but this is not a data event

text_data* get_data()

fill given structures with data. If it happens that data from comport are invalid or end-of-line is not reached yet - return NULL. The structure is allocated inside this function and pointer is released - you are responsible to clean-up it

This class has no child classes.

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