Aim AFDX / ARINC 664, Справочное руководство

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172 Reference Manual AFDX / ARINC 664 Application Interface Library
Section 4 – Function Reference: Receiver Functions
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Prototype:
AiReturn FdxCmdRxUDPCreatePort ( AiUInt32 ul_Handle,
const TY_FDX_UDP_DESCRIPTION
*px_UdpDescription,
AiUInt32 *pul_UdpHandle);
Driver Command:
FDX_RX_UDP_CREATE_PORT (0x0000807C)
Purpose:
This function creates a port to receive data from a specified UDP connection oriented port.
This function can be used only if the receiver is not running. This function assumes that
FdxCmdRxVLControl
was previously called in order to enable a VL for reception. On this VL
this function creates an FDX communication Rx-port.
Input:
TY_FDX_UDP_DESCRIPTION *px_UdpDescription
Pointer to a structure, which describes the UDP connection.
typedef struct {
AiUInt32
ul_PortType;
struct _quintuplet {
AiUInt32 ul_UdpSrc;
AiUInt32 ul_IpSrc
AiUInt32 ul_VlId;
AiUInt32 ul_IpDst;
AiUInt32 ul_UdpDst;
}x_Quint;
AiUInt32
ul_SubVlId;
AiUInt32 ul_UdpNumBufMessages;
AiUInt32 ul_UdpMaxMessageSize;
AiUInt32 ul_UdpSamplingRate;
}TY_FDX_UDP_DESCRIPTION;
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Type of the port connection
Value Description
FDX_UDP_SAMPLING Port is a sampling port.
Each Message is represented by one MAC Frame.
The size of the messages is fixed.
FDX_UDP_QUEUING Port is a queuing port:
Each Message can be represented by one or more MAC Frame.
Reassembling will be done in the IP layer.
A Message can have a size up to 8kByte.
s s t t r r u u c c t t _ _ q q u u i i n n t t u u p p l l e e t t
This structure provides a full identification of the communication.
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UDP port-number of the source UDP port.