// -----------------------------------------------------------------------------
//! \brief This routine writes data from the buffer to the transport layer.
//!
//! \param[in] buf - Pointer to buffer to write data from.
//! \param[in] len - Number of bytes to write.
//!
//! \return uint16_t - NPI error code value
// -----------------------------------------------------------------------------
uint8_t NPITL_writeTL(uint8_t *buf, uint16_t len)
{
_npiCSKey_t key;
key = NPIUtil_EnterCS();
// Check to make sure NPI is not currently in a transaction
if (TL_ready != NPITL_getTlStatus())
{
NPIUtil_ExitCS(key);
return NPI_BUSY;
}
// Check to make sure that write size is not greater than what is
// allowed
if (len > npiBufSize)
{
NPIUtil_ExitCS(key);
return NPI_TX_MSG_OVERSIZE;
}
// Copy into the second byte of npiTxBuf. This will save Serial Port
// Specific TL code from having to shift one byte later on for SOF.
//memset(npiTxBuf, 0, npiTLParams.npiTLBufSize);
memcpy(&npiTxBuf[1], buf, len);
npiTxBufLen = len;
npiTxActive = TRUE;
txPktCount++;
trasnportLayerState = TL_busy;
transportWrite(npiTxBufLen);
NPIUtil_ExitCS(key);
return NPI_SUCCESS;
}
// -----------------------------------------------------------------------------
//! \brief This routine writes data from the buffer to the transport layer.
//!
//! \param[in] buf - Pointer to buffer to write data from.
//! \param[in] len - Number of bytes to write.
//!
//! \return uint16_t - NPI error code value
// -----------------------------------------------------------------------------
uint8_t NPITL_writeTL(uint8_t *buf, uint16_t len)
{
#if (NPI_FLOW_CTRL == 1)
_npiCSKey_t key;
key = NPIUtil_EnterCS();
#endif // NPI_FLOW_CTRL = 1
// Check to make sure NPI is not currently in a transaction
if (NPITL_checkNpiBusy())
{
#if (NPI_FLOW_CTRL == 1)
NPIUtil_ExitCS(key);
#endif // NPI_FLOW_CTRL = 1
return NPI_BUSY;
}
// Check to make sure that write size is not greater than what is
// allowed
if (len > npiBufSize)
{
#if (NPI_FLOW_CTRL == 1)
NPIUtil_ExitCS(key);
#endif // NPI_FLOW_CTRL = 1
return NPI_TX_MSG_OVERSIZE;
}
// Copy into the second byte of npiTxBuf. This will save Serial Port
// Specific TL code from having to shift one byte later on for SOF.
memcpy(&npiTxBuf[1], buf, len);
npiTxBufLen = len;
npiTxActive = TRUE;
txPktCount++;
transportWrite(npiTxBufLen);
#if (NPI_FLOW_CTRL == 1)
LocRDY_ENABLE();
NPIUtil_ExitCS(key);
#endif // NPI_FLOW_CTRL = 1
return NPI_SUCCESS;
}
// -----------------------------------------------------------------------------
//! \brief This routine writes data from the buffer to the transport layer.
//!
//! \param[in] buf - Pointer to buffer to write data from.
//! \param[in] len - Number of bytes to write.
//!
//! \return uint16 - the number of bytes written to transport
// -----------------------------------------------------------------------------
uint16 NPITL_writeTL(uint8 *buf, uint16 len)
{
ICall_CSState key;
key = ICall_enterCriticalSection();
// Writes are atomic at transport layer
if ( NPITL_checkNpiBusy() )
{
ICall_leaveCriticalSection(key);
return 0;
}
// If len of message is greater than fragment size
// then message must be sent over the span of multiple
// fragments
if ( len > NPI_MAX_FRAG_SIZE )
{
msgFrag = buf + NPI_MAX_FRAG_SIZE;
msgFragLen = len - NPI_MAX_FRAG_SIZE;
len = NPI_MAX_FRAG_SIZE;
}
else
{
msgFrag = NULL;
msgFragLen = 0;
}
memcpy(npiTxBuf, buf, len);
npiTxBufLen = len;
npiTxActive = TRUE;
txPktCount++;
len = transportWrite(npiTxBufLen);
#if (NPI_FLOW_CTRL == 1)
SRDY_ENABLE();
#endif // NPI_FLOW_CTRL = 1
ICall_leaveCriticalSection(key);
return len;
}
