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Function COMSetProtocol

COMSetProtocol can set the desired protocol for a particular port:

void COMSetProtocol(int         Port, 
                    int         Prot, 
                    unsigned    ProtTaskPrio, 
                    RTKDuration PollCycle);

Parameters

Port

The port to configure.

Prot

The protocol to set. This parameter may have one of the following values: COM_PROT_NONE, COM_PROT_XON_XOFF, COM_PROT_RTS_CTS, COM_PROT_DTR_DSR.

ProtTaskPrio

This parameter specifies the priority of the RTCom internal task which implements the active protocol. If it is 0 (COM_PASSIVE), this task is not created and the protocol is passive. For any other valid thread priority in the range RTK_MIN_PRIO..RTK_MAX_PRIO (1..256), the protocol is active.

PollCycle

If ProtTaskPrio is not equal to COM_PASSIVE, parameter PollCycle specifies the interval in timer ticks to check whether a protocol action is required on any port. Only one such protocol task is created for all ports. The last values given for ProtTaskPrio and PollCycle apply.

If this function is never called for a specific port, no protocol is assumed. Protocols are only supported for interrupt-driven communication.

Function COMEnableFIFO

Function COMAllocateBuffers