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,turbo 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
BuildCommDCBAndTimeouts
ClearCommBreak
ClearCommError
CommConfigDialog
EscapeCommFunction
GetCommConfig
GetCommMask
GetCommModemStatus
GetCommProperties
GetCommState
GetCommTimeouts
GetDefaultCommConfig
PurgeComm
SetCommBreak
SetCommConfig
SetCommMask
SetCommState
SetCommTimeouts
SetDefaultCommConfig
SetupComm
TransmitCommChar
WaitCommEvent

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