|
提示！ The interfaces of this component contains inputs and outputs which drive and diagnose optional functionalities. With “ ⇘ CL2.GetProperty” you can check, whether a driver supports a certain functionality or not. If not, its input and output values are irrelevant. |
This function of the ⇘ CAA_CanL2.library creates a handle for a send cycle. An event which was triggered a certain period of time (udiCstForewarnTime) before the sending time can be assigned. And then a function allocated via “CB_RegisterCallback” can be called. The class used is “CB_FIELDBUS” and the source is “CB_DRIVER”. The lowest byte of the additional callback parameter contains the number of the interface. This makes it possible to update the data to be sent on time via " ⇘ CL2.CstCycleUpdate”. The priority and parameter "xEnableSyncWindow” settings are the same as in “ ⇘ CL2.Write”.
Input:
|
hDriver |
CAA.HANDLE |
handle of CAN interface |
|
eCstEvent* |
CB_EVENT |
event to be activated when receiving a message 0: no event |
|
usiPriority |
USINT |
sending priority of message with values from 1 (highest priority) to 9. Can be retrieved with GetProperty. usiPrioity = 0 forces immediate sending! |
|
xEnableSyncWindow* |
BOOL |
TRUE: sending only inside of current Sync window |
|
udiCstCycle |
UDINT |
time period for sending messages [µs] |
|
udiCstForewarnTime |
UDINT |
forewarn time before sending message [µs] |
|
peError |
POINTER TO CL2.ERROR |
pointer to error code (enumeration type) |