how to write interrupt service routines a serial port device.

[srikanth123456]

whether windows.h is supported in C language if so how to include it in c library.

can u also help me by giving concepts for the interrupt handling phenomenon in C language for a device at serial port.

how to sent 8 bytes of data to a serial port device
i tried with inportb( ),outportb( ),they are used for only the one byte only.

[horace1]

whether windows.h is supported in C language if so how to include it in c library.

can u also help me by giving concepts for the interrupt handling phenomenon in C language for a device at serial port.

how to sent 8 bytes of data to a serial port device
i tried with inportb( ),outportb( ),they are used for only the one byte only.

how interrupts are handled depends upon the compiler - which one are you using?
also operating systems such as Windows XP will not let user programs access I/O ports, etc. - are you using Windows 95/98?
to write 8 bytes to the serial port you use a loop and write a byte at a time checking that the transmit buffer is empty beore loading the next byte.

[srikanth123456]

windows2000,tur bo c compiler.

[Banfa]

You should be able to use the functions

CreateFile
ReadFile(Ex)
WriteFile(Ex)
CloseHandle

from the WIN32 API to access a serial port, the following functions are also useful in configuraing the port



BuildCommDCB
BuildCommDCBAnd Timeouts
ClearCommBreak
ClearCommError
CommConfigDialo g
EscapeCommFunct ion
GetCommConfig
GetCommMask
GetCommModemSta tus
GetCommProperti es
GetCommState
GetCommTimeouts
GetDefaultCommC onfig
PurgeComm
SetCommBreak
SetCommConfig
SetCommMask
SetCommState
SetCommTimeouts
SetDefaultCommC onfig
SetupComm
TransmitCommCha r
WaitCommEvent

I believe that Turbo C++ has access to the windows API.