mrmDataBufTx Class Reference

#include <mrmDataBufTx.h>

Inheritance diagram for mrmDataBufTx:

Collaboration diagram for mrmDataBufTx:

Public Member Functions
	mrmDataBufTx (const std::string &n, volatile epicsUInt8 *bufcontrol, volatile epicsUInt8 *buffer)
virtual	~mrmDataBufTx ()
virtual void	lock () const OVERRIDE FINAL
virtual void	unlock () const OVERRIDE FINAL
virtual bool	dataTxEnabled () const OVERRIDE FINAL
	Is card configured for buffer transmission? More...
virtual void	dataTxEnable (bool) OVERRIDE FINAL
virtual bool	dataRTS () const OVERRIDE FINAL
	Is card ready to send a buffer? More...
virtual epicsUInt32	lenMax () const OVERRIDE FINAL
virtual void	dataSend (epicsUInt32 len, const epicsUInt8 *buf) OVERRIDE FINAL
	Transmit a byte array. More...
Public Member Functions inherited from dataBufTx
	dataBufTx (const std::string &n)
virtual	~dataBufTx ()=0
Public Member Functions inherited from mrf::ObjectInst< dataBufTx >
virtual propertyBase *	getPropertyBase (const char *pname, const std::type_info &ptype)
virtual void	visitProperties (bool(*cb)(propertyBase *, void *), void *arg)
Public Member Functions inherited from mrf::Object
const std::string &	name () const
const Object *	parent () const
child_iterator	beginChild () const
child_iterator	endChild () const
template<typename P >
mrf::auto_ptr< property< P > >	getProperty (const char *pname)

Additional Inherited Members
Public Types inherited from mrf::Object
typedef m_obj_children_t::const_iterator	child_iterator
typedef std::map< std::string, std::string >	create_args_t
typedef Object *(*	create_factory_t) (const std::string &name, const std::string &klass, const create_args_t &args)
Static Public Member Functions inherited from mrf::ObjectInst< dataBufTx >
static int	initObject ()
Static Public Member Functions inherited from mrf::Object
static Object *	getObject (const std::string &name)
static Object *	getCreateObject (const std::string &name, const std::string &klass, const create_args_t &args=create_args_t())
static void	addFactory (const std::string &klass, create_factory_t fn)
static void	visitObjects (bool(*)(Object *, void *), void *)
Protected Member Functions inherited from mrf::ObjectInst< dataBufTx >
	ObjectInst (const std::string &n)
	ObjectInst (const std::string &n, A &a)
virtual	~ObjectInst ()
Protected Member Functions inherited from mrf::Object
	Object (const std::string &n, const Object *par=0)
virtual	~Object ()=0

Detailed Description

With the MRM both the EVG and the EVR have the exact same Tx control register

Definition at line 19 of file mrmDataBufTx.h.

Constructor & Destructor Documentation

mrmDataBufTx()

mrmDataBufTx::mrmDataBufTx	(	const std::string &	n,
		volatile epicsUInt8 *	bufcontrol,
		volatile epicsUInt8 *	buffer
	)

Definition at line 32 of file mrmDataBufTx.cpp.

  :dataBufTx(n)
  ,dataCtrl(bufcontrol)
  ,dataBuf(buffer)
  ,dataGuard()
{
}

~mrmDataBufTx()

mrmDataBufTx::~mrmDataBufTx ( )

virtual

Definition at line 42 of file mrmDataBufTx.cpp.

{
}

Member Function Documentation

dataRTS()

bool mrmDataBufTx::dataRTS ( ) const

virtual

Is card ready to send a buffer?

Implements dataBufTx.

Definition at line 68 of file mrmDataBufTx.cpp.

{
    epicsUInt32 reg=nat_ioread32(dataCtrl);

    if (!(reg&(DataTxCtrl_ena|DataTxCtrl_mode)))
        throw std::runtime_error("Buffer Tx not enabled");
    if (reg&DataTxCtrl_done)
        return true;
    else if (reg&DataTxCtrl_run)
        return false;
    else
        throw std::runtime_error("Buffer Tx not running or done");
}

dataSend()

void mrmDataBufTx::dataSend ( epicsUInt32  len, const epicsUInt8 *  buf  )

virtual

Transmit a byte array.

Parameters

len	Number of bytes to send
buf[in]	Pointer to byte array to be sent

Implements dataBufTx.

Definition at line 90 of file mrmDataBufTx.cpp.

{
    STATIC_ASSERT(DataTxCtrl_len_max%4==0);

    if (len > DataTxCtrl_len_max)
        throw std::out_of_range("Tx buffer is too long");
    
    // len must be a multiple of 4
    len &= DataTxCtrl_len_mask;

    SCOPED_LOCK(dataGuard);

    // Zero length
    // Seems to be required?
    nat_iowrite32(dataCtrl, DataTxCtrl_ena|DataTxCtrl_mode);

    // Write 4 byte words over VME
    epicsUInt32 index;
    for(index=0; index<len; index+=4) {
        be_iowrite32(&dataBuf[index], *(epicsUInt32*)(&ubuf[index]) );
    }

    nat_iowrite32(dataCtrl, len|DataTxCtrl_trig|DataTxCtrl_ena|DataTxCtrl_mode);

    // Reading flushes output queue of VME bridge
    // Actual sending is so fast that we can use busy wait here
    // Measurements showed that we loop up to 17 times
    while(!(nat_ioread32(dataCtrl)&DataTxCtrl_done)) {};
}

dataTxEnable()

void mrmDataBufTx::dataTxEnable ( bool  v )

virtual

Implements dataBufTx.

Definition at line 54 of file mrmDataBufTx.cpp.

{
    SCOPED_LOCK(dataGuard);

    epicsUInt32 reg=nat_ioread32(dataCtrl);
    epicsUInt32 mask=DataTxCtrl_ena|DataTxCtrl_mode;
    if(v)
        reg |= mask;
    else
        reg &= ~mask;
    nat_iowrite32(dataCtrl, reg);
}

dataTxEnabled()

bool mrmDataBufTx::dataTxEnabled ( ) const

virtual

Is card configured for buffer transmission?

Implements dataBufTx.

Definition at line 47 of file mrmDataBufTx.cpp.

{
    return (nat_ioread32(dataCtrl) &
         (DataTxCtrl_ena|DataTxCtrl_mode)) != 0;
}

lenMax()

epicsUInt32 mrmDataBufTx::lenMax ( ) const

virtual

Implements dataBufTx.

Definition at line 84 of file mrmDataBufTx.cpp.

{
    return DataTxCtrl_len_max;
}

lock()

virtual void mrmDataBufTx::lock ( ) const

inlinevirtual

Implements mrf::Object.

Definition at line 29 of file mrmDataBufTx.h.

{};

unlock()

virtual void mrmDataBufTx::unlock ( ) const

inlinevirtual

Implements mrf::Object.

Definition at line 30 of file mrmDataBufTx.h.

{};

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The documentation for this class was generated from the following files:

• mrmDataBufTx.h
• mrmDataBufTx.cpp