示例#1
0
// -----------------------------------------------------------------------------
//! \brief      This routine is used to handle an MRDY transition from a task
//!             context. Certain operations such as UART_read() cannot be
//!             performed from a HWI context
//!
//! \return     void
// -----------------------------------------------------------------------------
void NPITL_handleRemRdyEvent(void)
{
	_npiCSKey_t key;
	key = NPIUtil_EnterCS();
	//If the UART port is closed, then open it
    if(HS_GPIO_STATE & handshakingState)
    {
    	NPITL_setPM();
    	//Close the GPIO, then
    	//Open the UART
    	 PIN_close(hNpiHandshakePins);
    	 transportOpen(npiTLParams.portBoardID,
					  &npiTLParams.portParams.uartParams,
					  NPITL_transmissionCallBack, NPITL_chirpRecievedCB);
    	 handshakingState |=  HS_WAITFORCHIRP|HS_UART_STATE;
    	 //Clear GPIO flag, we are no longer in this state
    	 handshakingState &= ~HS_GPIO_STATE;
    }
    else
    {
    	//Once UART is open
        //Handle the RemRdy Event
        transportRemRdyEvent();
    }
    NPIUtil_ExitCS(key);
}
示例#2
0
// -----------------------------------------------------------------------------
//! \brief      This routine is used to handle an MRDY transition from a task
//!             context. Certain operations such as UART_read() cannot be
//!             performed from a HWI context
//!
//! \return     void
// -----------------------------------------------------------------------------
void NPITL_handleRemRdyEvent(void)
{
    _npiCSKey_t key;
    key = NPIUtil_EnterCS();
  
    // Check to make sure this event is not occurring during the next packet
    // transmission
    if (PIN_getInputValue(remRdyPIN) == 0 || 
        (npiTxActive && mrdyPktStamp == txPktCount))
    {
        transportRemRdyEvent();
        npiRxActive = TRUE;
        LocRDY_ENABLE();
    }
    
    NPIUtil_ExitCS(key);
}
示例#3
0
// -----------------------------------------------------------------------------
//! \brief      This routine initializes the transport layer and opens the port
//!             of the device. Note that based on project defines, either the
//!             UART, or SPI driver can be used.
//!
//! \param[in]  params - Transport Layer parameters
//!
//! \return     void
// -----------------------------------------------------------------------------
void NPITL_openTL(NPITL_Params *params)
{
    _npiCSKey_t key;
    key = NPIUtil_EnterCS();
    
    // Set NPI Task Call backs
    memcpy(&taskCBs, &params->npiCallBacks, sizeof(params->npiCallBacks));
    
    // Allocate memory for Transport Layer Tx/Rx buffers
    npiBufSize = params->npiTLBufSize;
    npiRxBuf = NPIUTIL_MALLOC(params->npiTLBufSize);
    memset(npiRxBuf, 0, npiBufSize);
    npiTxBuf = NPIUTIL_MALLOC(params->npiTLBufSize);
    memset(npiTxBuf, 0, npiBufSize);

    // This will be updated to be able to select SPI/UART TL at runtime
    // Now only compile time with the NPI_USE_[UART,SPI] flag
#if defined(NPI_USE_UART)
    transportOpen(params->portBoardID, 
                  &params->portParams.uartParams, 
                  NPITL_transmissionCallBack);
#elif defined(NPI_USE_SPI)
    transportOpen(params->portBoardID, 
                  &params->portParams.spiParams, 
                  NPITL_transmissionCallBack);
#endif //NPI_USE_UART
    
#if (NPI_FLOW_CTRL == 1)
    // Assign PIN IDs to remRdy and locRrdy
#ifdef NPI_MASTER
    remRdyPIN = (params->srdyPinID & IOC_IOID_MASK);
    locRdyPIN = (params->mrdyPinID & IOC_IOID_MASK);
#else
    remRdyPIN = (params->mrdyPinID & IOC_IOID_MASK);
    locRdyPIN = (params->srdyPinID & IOC_IOID_MASK);
#endif //NPI_MASTER
    
    // Add PIN IDs to PIN Configuration
    npiHandshakePinsCfg[REM_RDY_PIN_IDX] |= remRdyPIN;
    npiHandshakePinsCfg[LOC_RDY_PIN_IDX] |= locRdyPIN;
    
    // Initialize LOCRDY/REMRDY. Enable int after callback registered
    hNpiHandshakePins = PIN_open(&npiHandshakePins, npiHandshakePinsCfg);
    PIN_registerIntCb(hNpiHandshakePins, NPITL_remRdyPINHwiFxn);
    PIN_setConfig(hNpiHandshakePins, 
                  PIN_BM_IRQ, 
                  remRdyPIN | PIN_IRQ_BOTHEDGES);

    // Enable wakeup
    PIN_setConfig(hNpiHandshakePins, 
                  PINCC26XX_BM_WAKEUP, 
                  remRdyPIN | PINCC26XX_WAKEUP_NEGEDGE);
    
    remRdy_state = PIN_getInputValue(remRdyPIN);
    
    // If MRDY is already low then we must initiate a read because there was
    // a prior MRDY negedge that was missed
    if (!remRdy_state) 
    {
        NPITL_setPM();
        if (taskCBs.remRdyCB)
        {
            transportRemRdyEvent();
            LocRDY_ENABLE();
        }
    }
#endif // NPI_FLOW_CTRL = 1

#if (NPI_FLOW_CTRL == 0)
    // This call will start repeated Uart Reads when Power Savings is disabled
    transportRead();
#endif // NPI_FLOW_CTRL = 0

    NPIUtil_ExitCS(key);
}