Examples

exec ut700.temu
import MyCanDevice
# Create a can bus
create class=SimpleCANBus name=canbus0
create class=MyCANClass name=mycan0

can-connect bus=canbus0:CanBusIface dev=occan0:CanDevIface # From ut700
can-connect bus=canbus0:CanBusIface dev=mycan0:CanDevIface

#include "temu-c/Bus/Can.h"
#include "temu-c/Bus/Objsys.h"

// This is a device / RTU model, it needs to know about its CAN bus
typedef struct MyCanDevice {
  temu_Object Super;
  temu_CanBusIfaceRef Bus;
} MyCanDevice;


void*
create(const char *Name, int Argc, const temu_CreateArg *Argv)
{
  MyCanDevice *Dev = malloc(sizeof(MyCanDevice));
  memset(Dev, 0, sizeof(MyCanDevice);
  return Dev;
}

void
dispose(void *Obj)
{
  MyCanDevice *Dev = (MyCanDevice*)Obj;
  free(Dev);
}

// Implement the CAN Device interface

void
connected(void *Obj, temu_CanBusIfaceRef Bus)
{
  MyCanDevice *Dev = (MyCanDevice*)Obj;
  Dev->Bus = Bus;
  temu_logInfo(Dev, "connected to CAN bus");
}

void
disconnected(void *Obj)
{
  MyCanDevice *Dev = (MyCanDevice*)Obj;
  Dev->Bus = {NULL, NULL};
  // NOTE: This should also stop any pending events related to
  // message transmissions
  temu_logInfo(Dev, "disconnected from CAN bus");
}

void
receive(void *Dev, temu_CanFrame *Frame)
{
  temu_logInfo(Dev, "received CAN message with msg id %u",
               temu_canGetIdent(Frame));
}

temu_CanDevIface CanIface = {
  connected,
  disconnected,
  receive,
};

TEMU_PLUGIN_INIT
{
  temu_Class *cls = temu_registerClass("MyCANClass", create, dispose);

  temu_addProperty(cls, "CANBus", teTY_IfaceRef, 1);
  temu_addInterface(cls, "CanDevIface", "CanDevIface", &CanIface);

}