irext/examples
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

updated example name”

Browse Source
This commit is contained in:
strawmanbobi
2017-06-10 17:57:47 +08:00
parent 5de4ac202c
commit c5327f8717
827 changed files with 1 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files

481
cc26xx-example/ti/BLE-CC264x/ble_cc26xx/Components/npi/npi_tl.c Normal file
View File

@@ -0,0 +1,481 @@
//******************************************************************************
//! \file npi_tl.c
//! \brief NPI Transport Layer API
//
// Revised $Date: 2015-07-20 15:51:01 -0700 (Mon, 20 Jul 2015) $
// Revision: $Revision: 44375 $
//
// Copyright 2015 Texas Instruments Incorporated. All rights reserved.
//
// IMPORTANT: Your use of this Software is limited to those specific rights
// granted under the terms of a software license agreement between the user
// who downloaded the software, his/her employer (which must be your employer)
// and Texas Instruments Incorporated (the "License"). You may not use this
// Software unless you agree to abide by the terms of the License. The License
// limits your use, and you acknowledge, that the Software may not be modified,
// copied or distributed unless used solely and exclusively in conjunction with
// a Texas Instruments radio frequency device, which is integrated into
// your product. Other than for the foregoing purpose, you may not use,
// reproduce, copy, prepare derivative works of, modify, distribute, perform,
// display or sell this Software and/or its documentation for any purpose.
//
// YOU FURTHER ACKNOWLEDGE AND AGREE THAT THE SOFTWARE AND DOCUMENTATION ARE
// PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR IMPLIED,l
// INCLUDING WITHOUT LIMITATION, ANY WARRANTY OF MERCHANTABILITY, TITLE,
// NON-INFRINGEMENT AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL
// TEXAS INSTRUMENTS OR ITS LICENSORS BE LIABLE OR OBLIGATED UNDER CONTRACT,
// NEGLIGENCE, STRICT LIABILITY, CONTRIBUTION, BREACH OF WARRANTY, OR OTHER
// LEGAL EQUITABLE THEORY ANY DIRECT OR INDIRECT DAMAGES OR EXPENSES
// INCLUDING BUT NOT LIMITED TO ANY INCIDENTAL, SPECIAL, INDIRECT, PUNITIVE
// OR CONSEQUENTIAL DAMAGES, LOST PROFITS OR LOST DATA, COST OF PROCUREMENT
// OF SUBSTITUTE GOODS, TECHNOLOGY, SERVICES, OR ANY CLAIMS BY THIRD PARTIES
// (INCLUDING BUT NOT LIMITED TO ANY DEFENSE THEREOF), OR OTHER SIMILAR COSTS.
//
// Should you have any questions regarding your right to use this Software,
// contact Texas Instruments Incorporated at www.TI.com.
//******************************************************************************
// ****************************************************************************
// includes
// ****************************************************************************
#include <string.h>
#include <xdc/std.h>
#include <ti/sysbios/family/arm/cc26xx/Power.h>
#include <ti/sysbios/family/arm/cc26xx/PowerCC2650.h>
#include <ti/sysbios/family/arm/m3/Hwi.h>
#include <ti/drivers/pin/PINCC26XX.h>
#include <ti/sysbios/knl/Task.h>
#include <ti/sysbios/knl/Swi.h>
#include "inc/hw_memmap.h"
#include "inc/hw_ints.h"
#include "Board.h"
#include "ICall.h"
#include "hal_types.h"
#include "inc/npi_tl.h"
#include "inc/npi_config.h"
// ****************************************************************************
// defines
// ****************************************************************************
#if defined(NPI_USE_SPI)
#include "inc/npi_tl_spi.h"
#elif defined(NPI_USE_UART)
#include "inc/npi_tl_uart.h"
#else
#error Must define an underlying serial bus for NPI
#endif
// ****************************************************************************
// typedefs
// ****************************************************************************
//*****************************************************************************
// globals
//*****************************************************************************
//! \brief Flag for low power mode
static volatile bool npiPMSetConstraint = FALSE;
//! \brief Flag for ongoing NPI TX
static volatile bool npiTxActive = FALSE;
//! \brief The packet that was being sent when HWI of MRDY going low was received
static volatile uint32 mrdyPktStamp = 0;
//! \brief Packets transmitted counter
static uint32 txPktCount = 0;
//! \brief NPI Transport Layer receive buffer
static Char npiRxBuf[NPI_TL_BUF_SIZE];
//! \brief Index to last byte written into NPI Transport Layer receive buffer
static uint16_t npiRxBufTail = 0;
//! \brief Index to first byte to be read from NPI Transport Layer receive buffer
static uint16_t npiRxBufHead = 0;
//! \brief NPI Transport Layer transmit buffer
static Char npiTxBuf[NPI_TL_BUF_SIZE];
//! \brief Number of bytes in NPI Transport Layer transmit buffer
static uint16_t npiTxBufLen = 0;
//! \brief Call back function in NPI Task for transmit complete
static npiRtosCB_t taskTxCB = NULL;
//! \brief Call back function in NPI Task for receive complete
static npiRtosCB_t taskRxCB = NULL;
//! \brief The remainder of any message that is fragmented
static uint8 *msgFrag = NULL;
//! \brief The length of the remaining message fragment
static uint16 msgFragLen = 0;
#ifdef POWER_SAVING
//! \brief Call back function in NPI Task for MRDY hardware interrupt
static npiMrdyRtosCB_t taskMrdyCB = NULL;
//! \brief PIN Config for Mrdy and Srdy signals
static PIN_Config npiHandshakePinsCfg[] =
{
MRDY_PIN | PIN_GPIO_OUTPUT_DIS | PIN_INPUT_EN | PIN_PULLUP,
SRDY_PIN | PIN_GPIO_OUTPUT_EN | PIN_GPIO_HIGH | PIN_PUSHPULL | PIN_DRVSTR_MAX,
PIN_TERMINATE
};
//! \brief PIN State for Mrdy and Srdy signals
static PIN_State npiHandshakePins;
//! \brief PIN Handles for Mrdy and Srdy signals
static PIN_Handle hNpiHandshakePins;
//! \brief No way to detect whether positive or negative edge with PIN Driver
//! Use a flag to keep track of state
static uint8 mrdy_state;
#endif
//*****************************************************************************
// function prototypes
//*****************************************************************************
//! \brief Call back function provided to underlying serial interface to be
// invoked upon the completion of a transmission
static void NPITL_transmissionCallBack(uint16 Rxlen, uint16 Txlen);
#ifdef POWER_SAVING
//! \brief HWI interrupt function for MRDY
static void NPITL_MRDYPinHwiFxn(PIN_Handle hPin, PIN_Id pinId);
#endif
// -----------------------------------------------------------------------------
//! \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] npiCBTx - Call back function for TX complete event
//! \param[in] npiCBRx - Call back function for RX event
//! \param[in] npiCBMrdy - Call back function for MRDY event
//!
//! \return void
// -----------------------------------------------------------------------------
void NPITL_initTL(npiRtosCB_t npiCBTx, npiRtosCB_t npiCBRx, npiRtosCB_t npiCBMrdy)
{
ICall_CSState key;
key = ICall_enterCriticalSection();
taskTxCB = npiCBTx;
taskRxCB = npiCBRx;
#ifdef POWER_SAVING
taskMrdyCB = npiCBMrdy;
#endif
transportInit(npiRxBuf,npiTxBuf, NPITL_transmissionCallBack);
#ifdef POWER_SAVING
SRDY_DISABLE();
// Initialize SRDY/MRDY. Enable int after callback registered
hNpiHandshakePins = PIN_open(&npiHandshakePins, npiHandshakePinsCfg);
PIN_registerIntCb(hNpiHandshakePins, NPITL_MRDYPinHwiFxn);
PIN_setConfig(hNpiHandshakePins, PIN_BM_IRQ, MRDY_PIN | PIN_IRQ_BOTHEDGES);
// Enable wakeup
PIN_setConfig(hNpiHandshakePins, PINCC26XX_BM_WAKEUP, MRDY_PIN | PINCC26XX_WAKEUP_NEGEDGE);
mrdy_state = PIN_getInputValue(MRDY_PIN);
#endif // ! POWER_SAVING
ICall_leaveCriticalSection(key);
return;
}
// -----------------------------------------------------------------------------
//! \brief This routine returns the state of transmission on NPI
//!
//! \return bool - state of NPI transmission - 1 - active, 0 - not active
// -----------------------------------------------------------------------------
bool NPITL_checkNpiBusy(void)
{
#ifdef POWER_SAVING
return !PIN_getOutputValue(SRDY_PIN);
#else
return npiTxActive;
#endif
}
#ifdef POWER_SAVING
// -----------------------------------------------------------------------------
//! \brief This routine is used to set constraints on power manager
//!
//! \return void
// -----------------------------------------------------------------------------
static void NPITL_setPM(void)
{
if( npiPMSetConstraint )
{
return;
}
// set constraints for Standby and idle mode
Power_setConstraint(Power_SB_DISALLOW);
Power_setConstraint(Power_IDLE_PD_DISALLOW);
npiPMSetConstraint = TRUE;
}
#endif
#ifdef POWER_SAVING
// -----------------------------------------------------------------------------
//! \brief This routine is used to release constraints on power manager
//!
//! \return void
// -----------------------------------------------------------------------------
static void NPITL_relPM(void)
{
if ( ! npiPMSetConstraint )
{
return;
}
// release constraints for Standby and idle mode
Power_releaseConstraint(Power_SB_DISALLOW);
Power_releaseConstraint(Power_IDLE_PD_DISALLOW);
npiPMSetConstraint = FALSE;
}
#endif
#ifdef POWER_SAVING
// -----------------------------------------------------------------------------
//! \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_handleMrdyEvent(void)
{
ICall_CSState key;
key = ICall_enterCriticalSection();
// Check to make sure this event is not occurring during the next packet
// transmission
if ( PIN_getInputValue(MRDY_PIN) == 0 ||
(npiTxActive && mrdyPktStamp == txPktCount ) )
{
transportMrdyEvent();
SRDY_ENABLE();
}
ICall_leaveCriticalSection(key);
}
// -----------------------------------------------------------------------------
//! \brief This is a HWI function handler for the MRDY pin. Some MRDY
//! functionality can execute from this HWI context. Others
//! must be executed from task context hence the taskMrdyCB()
//!
//! \param[in] hPin - PIN Handle
//! \param[in] pinId - ID of pin that triggered HWI
//!
//! \return void
// -----------------------------------------------------------------------------
static void NPITL_MRDYPinHwiFxn(PIN_Handle hPin, PIN_Id pinId)
{
// The pin driver does not currently support returning whether the int
// was neg or pos edge so we must use a variable to keep track of state.
// If the physical state of the pin was used then a very quick toggle of
// of MRDY could be missed.
mrdy_state ^= 1;
if (mrdy_state == 0)
{
mrdyPktStamp = txPktCount;
NPITL_setPM();
if ( taskMrdyCB )
{
taskMrdyCB();
}
}
else
{
transportStopTransfer();
}
// Check the physical state of the pin to see if it matches the variable
// state. If not then edge has been missed
if (mrdy_state != PIN_getInputValue(MRDY_PIN))
{
mrdy_state = PIN_getInputValue(MRDY_PIN);
if (mrdy_state == 0)
{
mrdyPktStamp = txPktCount;
NPITL_setPM();
if (taskMrdyCB)
{
taskMrdyCB();
}
}
else
{
transportStopTransfer();
}
}
}
#endif
// -----------------------------------------------------------------------------
//! \brief This callback is invoked on the completion of one transmission
//! to/from the host MCU. Any bytes receives will be [0,Rxlen) in
//! npiRxBuf.
//! If bytes were receives or transmitted, this function notifies
//! the NPI task via registered call backs
//!
//! \param[in] Rxlen - lenth of the data received
//! \param[in] Txlen - length of the data transferred
//!
//! \return void
// -----------------------------------------------------------------------------
static void NPITL_transmissionCallBack(uint16 Rxlen, uint16 Txlen)
{
npiRxBufHead = 0;
npiRxBufTail = Rxlen;
if(Rxlen)
{
if ( taskRxCB )
{
taskRxCB(Rxlen);
}
}
if(Txlen)
{
npiTxActive = FALSE;
// Only perform call back if NPI Task has been registered
// and if there is not another fragment to send of this message
if ( taskTxCB && !msgFragLen )
{
taskTxCB(Txlen);
}
}
#ifdef POWER_SAVING
// Reset mrdy state in case of missed HWI
mrdy_state = PIN_getInputValue(MRDY_PIN);
NPITL_relPM();
SRDY_DISABLE();
#endif
// If there is another fragment to send, begin write without notifying
// higher level tasks
if ( msgFragLen )
{
NPITL_writeTL(msgFrag,msgFragLen);
}
}
// -----------------------------------------------------------------------------
//! \brief This routine reads data from the transport layer based on len,
//! and places it into the buffer.
//!
//! \param[in] buf - Pointer to buffer to place read data.
//! \param[in] len - Number of bytes to read.
//!
//! \return uint16 - the number of bytes read from transport
// -----------------------------------------------------------------------------
uint16 NPITL_readTL(uint8 *buf, uint16 len)
{
// Only copy the lowest number between len and bytes remaining in buffer
len = (len > NPITL_getRxBufLen()) ? NPITL_getRxBufLen() : len;
memcpy(buf, &npiRxBuf[npiRxBufHead], len);
npiRxBufHead += len;
return len;
}
// -----------------------------------------------------------------------------
//! \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);
#ifdef POWER_SAVING
SRDY_ENABLE();
#endif
ICall_leaveCriticalSection(key);
return len;
}
// -----------------------------------------------------------------------------
//! \brief This routine returns the max size receive buffer.
//!
//! \return uint16 - max size of the receive buffer
// -----------------------------------------------------------------------------
uint16 NPITL_getMaxRxBufSize(void)
{
return(NPI_TL_BUF_SIZE);
}
// -----------------------------------------------------------------------------
//! \brief This routine returns the max size transmit buffer.
//!
//! \return uint16 - max size of the transmit buffer
// -----------------------------------------------------------------------------
uint16 NPITL_getMaxTxBufSize(void)
{
return(NPI_TL_BUF_SIZE);
}
// -----------------------------------------------------------------------------
//! \brief Returns number of bytes that are unread in RxBuf
//!
//! \return uint16 - number of unread bytes
// -----------------------------------------------------------------------------
uint16 NPITL_getRxBufLen(void)
{
return ((npiRxBufTail - npiRxBufHead) + NPI_TL_BUF_SIZE) % NPI_TL_BUF_SIZE;
}