/**
* \brief This function will connect the tool with hardware. This will
* establish the data link between the application and hardware.
* \param[in] bConnect TRUE to Connect, FALSE to Disconnect
* \return Returns defERR_OK if successful otherwise corresponding Error code.
* \authors Arunkumar Karri
* \date 07.10.2011 Created
*/
static int nConnect(BOOL bConnect)
{
int nReturn = -1;
XLstatus xlStatus;
if (!sg_bIsConnected && bConnect) // Disconnected and to be connected
{
/* Set the permission mask for all channel access */
g_xlPermissionMask = g_xlChannelMask;
xlStatus = xlOpenPort(&g_xlPortHandle[0], g_AppName, g_xlChannelMask, &g_xlPermissionMask,
RX_QUEUE_SIZE, XL_INTERFACE_VERSION, XL_BUS_TYPE_LIN);
if (XL_SUCCESS == xlStatus)
{
//Calculate connected Timestamp
QueryPerformanceCounter(&sg_QueryTickCount);
// Get frequency of the performance counter
QueryPerformanceFrequency(&sg_lnFrequency);
// Convert it to time stamp with the granularity of hundreds of microsecond
//if (sg_QueryTickCount.QuadPart * 10000 > sg_QueryTickCount.QuadPart)
if ((sg_QueryTickCount.QuadPart * 10000) > sg_lnFrequency.QuadPart)
{
sg_TimeStamp = (sg_QueryTickCount.QuadPart * 10000) / sg_lnFrequency.QuadPart;
}
else
{
sg_TimeStamp = (sg_QueryTickCount.QuadPart / sg_lnFrequency.QuadPart) * 10000;
}
/* Transit into 'CREATE TIME MAP' state */
sg_byCurrState = CREATE_MAP_TIMESTAMP;
vMapDeviceChannelIndex();
sg_bIsConnected = bConnect;
xlFlushReceiveQueue(g_xlPortHandle[0]);
/* Set LIN channel Params */
nReturn = nSetBaudRate();
}
else
{
return S_FALSE;
}
}
else if (sg_bIsConnected && !bConnect) // Connected & to be disconnected
{
sg_bIsConnected = bConnect;
Sleep(0); // Let other threads run for once
nReturn = nDisconnectFromDriver();
}
else
{
nReturn = defERR_OK;
}
if ( sg_bIsConnected )
{
InitializeCriticalSection(&sg_CritSectForWrite);
}
else
{
DeleteCriticalSection(&sg_CritSectForWrite);
}
return nReturn;
}
////////////////////////////////////////////////////////////////////////////
// demoInitDriver
// initializes the driver with one port and all founded channels which
// have a connected CAN cab/piggy.
//
////////////////////////////////////////////////////////////////////////////
XLstatus demoInitDriver(XLaccess *pxlChannelMaskTx, unsigned char *pxlChannelIndex)
{
XLstatus xlStatus;
XLaccess xlChannelMaskTx = 0;
unsigned int i;
// ------------------------------------
// open the driver
// ------------------------------------
xlStatus = xlOpenDriver ();
// ------------------------------------
// get/print the hardware configuration
// ------------------------------------
if (XL_SUCCESS == xlStatus)
{
xlStatus = xlGetDriverConfig(&g_xlDrvConfig);
}
if (XL_SUCCESS == xlStatus)
{
demoPrintConfig();
printf("Usage: J1939_stack_test <BaudRate> <ApplicationName> <Identifier>\n\n");
// ------------------------------------
// select the wanted channels
// ------------------------------------
g_xlChannelMask = 0;
for (i=0; i < g_xlDrvConfig.channelCount; i++)
{
// we take all hardware we found and
// check that we have only CAN cabs/piggy's
// at the moment there is no VN8910 XLAPI support!
if (g_xlDrvConfig.channel[i].channelBusCapabilities & XL_BUS_ACTIVE_CAP_CAN)
{
if (!*pxlChannelMaskTx)
{
*pxlChannelMaskTx = g_xlDrvConfig.channel[i].channelMask;
*pxlChannelIndex = g_xlDrvConfig.channel[i].channelIndex;
}
g_xlChannelMask |= g_xlDrvConfig.channel[i].channelMask;
}
}
if (!g_xlChannelMask)
{
printf("ERROR: no available channels found! (e.g. no CANcabs...)\n\n");
xlStatus = XL_ERROR;
}
}
g_xlPermissionMask = g_xlChannelMask;
// ------------------------------------
// open ONE port including all channels
// ------------------------------------
if (XL_SUCCESS == xlStatus)
{
xlStatus = xlOpenPort(&g_xlPortHandle, g_AppName, g_xlChannelMask, &g_xlPermissionMask, RX_QUEUE_SIZE, XL_INTERFACE_VERSION, XL_BUS_TYPE_CAN);
printf("- OpenPort : CM=0x%I64x, PH=0x%02X, PM=0x%I64x, %s\n",
g_xlChannelMask, g_xlPortHandle, g_xlPermissionMask, xlGetErrorString(xlStatus));
}
if ((XL_SUCCESS == xlStatus) && (XL_INVALID_PORTHANDLE != g_xlPortHandle))
{
// ------------------------------------
// if we have permission we set the
// bus parameters (baudrate)
// ------------------------------------
if (g_xlChannelMask == g_xlPermissionMask)
{
xlStatus = xlCanSetChannelBitrate(g_xlPortHandle, g_xlChannelMask, g_BaudRate);
printf("- SetChannelBitrate: baudr.=%u, %s\n",g_BaudRate, xlGetErrorString(xlStatus));
}
else
{
printf("- : we have NO init access!\n");
}
}
else
{
xlClosePort(g_xlPortHandle);
g_xlPortHandle = XL_INVALID_PORTHANDLE;
xlStatus = XL_ERROR;
}
return xlStatus;
}
