To interface smoothly with Embed, Embed can call seven Pascal-style functions that share the base DLL function name and have an event code suffix corresponding to an Embed event. You should supply a function for each event that you want your DLL code to handle. The additional functions are described below:
|
Function name |
Purpose |
When it’s called |
|
userBlock() |
Block time step |
Each simulation time step |
|
userBlockEvent() |
Block event handler |
On occurrence of a block-related event |
|
userBlock PA() |
Block parameter allocation |
Block creation |
|
userBlock PC() |
Block parameter change |
Right button click |
|
userBlock PI() |
Block parameter initialization |
Immediately after userBlockPA() |
|
userBlock SE() |
Block simulation end |
Simulation end time |
|
userBlock SS() |
Block simulation start |
Simulation start time |
The term userBlock is a placeholder for your DLL base function name. You specify the DLL base function name when you bind the DLL to a userFunction block. For more information, see Accessing a custom block from Embed.
You can have any number of user-written blocks in a single DLL file.
All definitions are kept in the VSUSER.H file. This file should be included in every user DLL.