freemaster_bdm.c

Go to the documentation of this file.

/******************************************************************************
*
* Freescale Semiconductor Inc.
* (c) Copyright 2004-2011 Freescale Semiconductor
* ALL RIGHTS RESERVED.
*
****************************************************************************/
#include "freemaster.h"
#include "freemaster_private.h"
#include "freemaster_protocol.h"

#if FMSTR_USE_PDBDM
typedef struct
{
        FMSTR_U16 buffBorder1;                 // Border code of Packet driven BDM communication buffer
        FMSTR_U8 buffSize;                     // Size of Packet driven BDM communication buffer
        FMSTR_U8 bdmState;                     // State of the Packet driven BDM communication
        FMSTR_BCHR commBuffer[FMSTR_COMM_BUFFER_SIZE+1]; //FreeMASTER Packet driven BDM communication buffer (in/out) plus the STS
        FMSTR_U16 buffBorder2;                 // Border code of Packet driven BDM communication buffer
}FMSTR_PDBDM_COMBUFF;

static FMSTR_PDBDM_COMBUFF pcm_bdm_pCommBuffer; //Packet driven communication buffer

/**************************************************************************/
void FMSTR_InitPDBdm(void)
{   
        /* Initialize buffer border and size in communication buffer */
        pcm_bdm_pCommBuffer.buffBorder1 = FMSTR_PDBDM_BUFFBORDER_CODE1;
        pcm_bdm_pCommBuffer.buffSize = FMSTR_COMM_BUFFER_SIZE + 1;
        pcm_bdm_pCommBuffer.buffBorder2 = FMSTR_PDBDM_BUFFBORDER_CODE2;

        /* initialize state variables */
        pcm_bdm_pCommBuffer.bdmState = FMSTR_PDBDM_IDLE;
}

/**************************************************************************/
void FMSTR_SendResponse(FMSTR_BPTR pResponse, FMSTR_SIZE8 nLength)
{
        FMSTR_UNUSED(pResponse);
        FMSTR_UNUSED(nLength);
        /* Frame is ready to send */
        pcm_bdm_pCommBuffer.bdmState = FMSTR_PDBDM_FRAME_TO_SEND;
}

/*******************************************************************************
*
* @brief    API: Main "Polling" call from the application main loop
*
*******************************************************************************/

void FMSTR_Poll(void)
{ 
        if (pcm_bdm_pCommBuffer.bdmState == FMSTR_PDBDM_RECEIVED_FRAME)
        {
                /* Packet is received */ 
                pcm_bdm_pCommBuffer.bdmState = FMSTR_PDBDM_DECODING_FRAME;
                /* Decode packet and create response */
                FMSTR_ProtocolDecoder(pcm_bdm_pCommBuffer.commBuffer);
        }
}
#else /* FMSTR_USE_PDBDM */

/*lint -efile(766, freemaster_protocol.h) include file is not used in this case */

#endif /* FMSTR_USE_PDBDM */