コード例 #1
0
ファイル: rt_io_m_mb_master.c プロジェクト: siamect/proview 
/*----------------------------------------------------------------------------*\
   Read method for the Modbus Master agent
\*----------------------------------------------------------------------------*/
static pwr_tStatus IoAgentRead(io_tCtx ctx, io_sAgent* ap)
{
  io_sAgentLocal* local;
  io_sRackLocal* local_rack;
  pwr_tUInt16 sts;
  io_sRack* rp;
  pwr_tCid cid;
  pwr_sClass_Modbus_TCP_Slave* sp;

  local = (io_sAgentLocal*)ap->Local;

  /* Do configuration check and initialize modules. */

  rp = ap->racklist;

  while (rp) {
    cid = rp->Class;
    while (ODD(gdh_GetSuperClass(cid, &cid, rp->Objid)))
      ;

    switch (cid) {
    case pwr_cClass_Modbus_TCP_Slave:

      sp = (pwr_sClass_Modbus_TCP_Slave*)rp->op;
      local_rack = rp->Local;

      /* Start receving old data so the input buffer is flushed */
      if (sp->Status == MB__NORMAL) {
        sts = mb_recv_data(local_rack, rp, sp);
      }

      /* Request new data */
      if (sp->Status == MB__NORMAL && sp->DisableSlave != 1) {
        sts = mb_send_data(local_rack, rp, sp, mb_mSendMask_ReadReq);
      }

      break;
    } /* End - switch ... */

    rp = rp->next;
  }

  return IO__SUCCESS;
}
コード例 #2
0
/*----------------------------------------------------------------------------*\
   Write method for the Modbus_TCP slave
\*----------------------------------------------------------------------------*/
static pwr_tStatus IoRackWrite (
    io_tCtx	ctx,
    io_sAgent	*ap,
    io_sRack	*rp
)
{
    io_sRackLocal *local;
    pwr_sClass_Modbus_TCP_Slave *sp;
    pwr_tStatus sts;

    local = rp->Local;

    sp = (pwr_sClass_Modbus_TCP_Slave *) rp->op;

    local->expected_msgs = 0;

    if (sp->Status == MB__NORMAL && sp->DisableSlave != 1) {
        sts = mb_send_data(local, rp, sp, mb_mSendMask_WriteReq);
    }

    if (sp->DisableSlave == 1) sp->Status = MB__DISABLED;

    return IO__SUCCESS;
}