Prototype RF driver for STM Sub-1 GHz RF expansion board based on the SPSGRF-868 module for STM32 Nucleo.

Prototype RF Driver for STM Sub-1 GHz RF Expansion Boards based on the SPSGRF-868 and SPSGRF-915 Modules for STM32 Nucleo

Currently supported boards:

Note, in order to use expansion board X-NUCLEO-IDS01A4 in mbed you need to perform the following HW modifications on the board:

  • Unmount resistor R4
  • Mount resistor R7

Furthermore, on some Nucleo development boards (e.g. the NUCLEO_F429ZI), in order to be able to use Ethernet together with these Sub-1 GHz RF expansion boards, you need to compile this driver with macro SPIRIT1_SPI_MOSI=PB_5 defined, while the development board typically requires some HW modification as e.g. described here!

This driver can be used together with the 6LoWPAN stack (a.k.a. Nanostack).

Revision:
34:edda6a7238ec
Parent:
33:c226804be492
Child:
35:f3f444c379d0
--- a/libs/spirit1/SPIRIT1_Library/Src/SPIRIT_PktBasic.c	Mon Nov 21 13:26:17 2016 +0100
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,615 +0,0 @@
-/**
-  ******************************************************************************
-  * @file    SPIRIT_PktBasic.c
-  * @author  VMA division - AMS
-  * @version 3.2.2
-  * @date    08-July-2015
-  * @brief   Configuration and management of SPIRIT Basic packets.
-  * @details
-  *
-  * @attention
-  *
-  * <h2><center>&copy; COPYRIGHT(c) 2015 STMicroelectronics</center></h2>
-  *
-  * Redistribution and use in source and binary forms, with or without modification,
-  * are permitted provided that the following conditions are met:
-  *   1. Redistributions of source code must retain the above copyright notice,
-  *      this list of conditions and the following disclaimer.
-  *   2. Redistributions in binary form must reproduce the above copyright notice,
-  *      this list of conditions and the following disclaimer in the documentation
-  *      and/or other materials provided with the distribution.
-  *   3. Neither the name of STMicroelectronics nor the names of its contributors
-  *      may be used to endorse or promote products derived from this software
-  *      without specific prior written permission.
-  *
-  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
-  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
-  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
-  * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
-  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
-  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
-  * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
-  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
-  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
-  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-  *
-  ******************************************************************************
-  */
-
-/* Includes ------------------------------------------------------------------*/
-#include "SPIRIT_PktBasic.h"
-#include "MCU_Interface.h"
-
-
-/**
- * @addtogroup SPIRIT_Libraries
- * @{
- */
-
-
-/**
- * @addtogroup SPIRIT_PktBasic
- * @{
- */
-
-
-/**
- * @defgroup PktBasic_Private_TypesDefinitions  Pkt Basic Private Types Definitions
- * @{
- */
-
-/**
- *@}
- */
-
-
-/**
- * @defgroup PktBasic_Private_Defines           Pkt Basic Private Defines
- * @{
- */
-
-/**
- *@}
- */
-
-
-/**
- * @defgroup PktBasic_Private_Macros            Pkt Basic Private Macros
- * @{
- */
-
-/**
- *@}
- */
-
-
-/**
- * @defgroup PktBasic_Private_Variables          Pkt Basic Private Variables
- * @{
- */
-
-/**
- *@}
- */
-
-
-
-/**
- * @defgroup PktBasic_Private_FunctionPrototypes        Pkt Basic Private Function Prototypes
- * @{
- */
-
-/**
- *@}
- */
-
-
-/**
- * @defgroup PktBasic_Private_Functions                 Pkt Basic Private Functions
- * @{
- */
-
-/**
- * @brief  Initializes the SPIRIT Basic packet according to the specified parameters in the PktBasicInit struct.
- *         Notice that this function sets the autofiltering option on CRC if it is set to any value different from BASIC_NO_CRC.
- * @param  pxPktBasicInit Basic packet init structure.
- *         This parameter is a pointer to @ref PktBasicInit.
- * @retval None.
- */
-void SpiritPktBasicInit(PktBasicInit* pxPktBasicInit)
-{
-  uint8_t tempRegValue[4], i;
-
-  /* Check the parameters */
-  s_assert_param(IS_BASIC_PREAMBLE_LENGTH(pxPktBasicInit->xPreambleLength));
-  s_assert_param(IS_BASIC_SYNC_LENGTH(pxPktBasicInit->xSyncLength));
-  s_assert_param(IS_BASIC_CRC_MODE(pxPktBasicInit->xCrcMode));
-  s_assert_param(IS_BASIC_LENGTH_WIDTH_BITS(pxPktBasicInit->cPktLengthWidth));
-  s_assert_param(IS_BASIC_FIX_VAR_LENGTH(pxPktBasicInit->xFixVarLength));
-  s_assert_param(IS_SPIRIT_FUNCTIONAL_STATE(pxPktBasicInit->xAddressField));
-  s_assert_param(IS_SPIRIT_FUNCTIONAL_STATE(pxPktBasicInit->xFec));
-  s_assert_param(IS_SPIRIT_FUNCTIONAL_STATE(pxPktBasicInit->xDataWhitening));
-  s_assert_param(IS_BASIC_CONTROL_LENGTH(pxPktBasicInit->xControlLength));
-
-  /* Reads the PROTOCOL1 register */
-  g_xStatus = SpiritSpiReadRegisters(PROTOCOL1_BASE, 1, &tempRegValue[0]);
-
-  /* Mask a reserved bit */
-  tempRegValue[0] &= ~0x20;
-
-  /* Always set the automatic packet filtering */
-  tempRegValue[0] |= PROTOCOL1_AUTO_PCKT_FLT_MASK;
-
-  /* Writes the value on register */
-  g_xStatus = SpiritSpiWriteRegisters(PROTOCOL1_BASE, 1, &tempRegValue[0]);
-
-  /* Reads the PCKT_FLT_OPTIONS register */
-  g_xStatus = SpiritSpiReadRegisters(PCKT_FLT_OPTIONS_BASE, 1, &tempRegValue[0]);
-
-  /* Always reset the control and source filtering (also if it is not present in basic) */
-  tempRegValue[0] &= ~(PCKT_FLT_OPTIONS_SOURCE_FILTERING_MASK | PCKT_FLT_OPTIONS_CONTROL_FILTERING_MASK);
-
-  /* Writes the value on register */
-  g_xStatus = SpiritSpiWriteRegisters(PCKT_FLT_OPTIONS_BASE, 1, &tempRegValue[0]);
-
-  if(pxPktBasicInit->xAddressField == S_ENABLE)
-  {
-    tempRegValue[0]=0x08;
-  }
-  else
-  {
-    tempRegValue[0]=0x00;
-  }
-  /* Address and control length setting */
-  tempRegValue[0] |= ((uint8_t) pxPktBasicInit->xControlLength);
-
-  /* Packet format and width length setting */
-  pxPktBasicInit->cPktLengthWidth == 0 ? pxPktBasicInit->cPktLengthWidth=1 : pxPktBasicInit->cPktLengthWidth;
-  tempRegValue[1] = ((uint8_t) PCKTCTRL3_PCKT_FRMT_BASIC) | ((uint8_t)(pxPktBasicInit->cPktLengthWidth-1));
-
-  /* Preamble, sync and fixed or variable length setting */
-  tempRegValue[2] = ((uint8_t) pxPktBasicInit->xPreambleLength) | ((uint8_t) pxPktBasicInit->xSyncLength) |
-                    ((uint8_t) pxPktBasicInit->xFixVarLength);
-
-  /* CRC length, whitening and FEC setting */
-  tempRegValue[3] = (uint8_t) pxPktBasicInit->xCrcMode;
-
-  if(pxPktBasicInit->xDataWhitening == S_ENABLE)
-  {
-     tempRegValue[3] |= PCKTCTRL1_WHIT_MASK;
-  }
-
-  if(pxPktBasicInit->xFec == S_ENABLE)
-  {
-     tempRegValue[3] |= PCKTCTRL1_FEC_MASK;
-  }
-
-  /* Writes registers */
-  SpiritSpiWriteRegisters(PCKTCTRL4_BASE, 4, tempRegValue);
-
-  /* Sync words setting */
-  for(i=0;i<4;i++)
-  {
-    if(i<3-(pxPktBasicInit->xSyncLength >>1))
-    {
-      tempRegValue[i]=0;
-    }
-    else
-    {
-      tempRegValue[i] = (uint8_t)(pxPktBasicInit->lSyncWords>>(8*i));
-    }
-  }
-
-  /* Sets CRC check bit */
-  if(pxPktBasicInit->xCrcMode == PKT_NO_CRC)
-  {
-    SpiritPktBasicFilterOnCrc(S_DISABLE);
-  }
-  else
-  {
-    SpiritPktBasicFilterOnCrc(S_ENABLE);
-  }
-
-  
-  g_xStatus = SpiritSpiWriteRegisters(SYNC4_BASE, 4, tempRegValue);
-
-}
-
-
-/**
- * @brief  Returns the SPIRIT Basic packet structure according to the specified parameters in the registers.
- * @param  pxPktBasicInit Basic packet init structure.
- *         This parameter is a pointer to @ref PktBasicInit.
- * @retval None.
- */
-void SpiritPktBasicGetInfo(PktBasicInit* pxPktBasicInit)
-{
-  uint8_t tempRegValue[10];
-
-  /* Reads registers */
-  g_xStatus = SpiritSpiReadRegisters(PCKTCTRL4_BASE, 10, tempRegValue);
-
-  /* Length width */
-  pxPktBasicInit->cPktLengthWidth=(tempRegValue[1] & 0x0F)+1;
-
-  /* Address field */
-  pxPktBasicInit->xAddressField=(SpiritFunctionalState)((tempRegValue[0]>>3) & 0x01);
-
-  /* Control length */
-  pxPktBasicInit->xControlLength=(BasicControlLength)(tempRegValue[0] & 0x07);
-
-  /* CRC mode */
-  pxPktBasicInit->xCrcMode=(BasicCrcMode)(tempRegValue[3] & 0xE0);
-
-  /* Whitening */
-  pxPktBasicInit->xDataWhitening=(SpiritFunctionalState)((tempRegValue[3] >> 4) & 0x01);
-
-  /* FEC */
-  pxPktBasicInit->xFec=(SpiritFunctionalState)(tempRegValue[3] & 0x01);
-
-  /* FIX or VAR bit */
-  pxPktBasicInit->xFixVarLength=(BasicFixVarLength)(tempRegValue[2] & 0x01);
-
-  /* Preamble length */
-  pxPktBasicInit->xPreambleLength=(BasicPreambleLength)(tempRegValue[2] & 0xF8);
-
-  /* Sync length */
-  pxPktBasicInit->xSyncLength=(BasicSyncLength)(tempRegValue[2] & 0x06);
-
-  /* sync Words */
-  pxPktBasicInit->lSyncWords=0;
-  for(uint8_t i=0 ; i<4 ; i++)
-  {
-      if(i>2-(((uint8_t)pxPktBasicInit->xSyncLength) >>1))
-      {
-        pxPktBasicInit->lSyncWords |= (uint32_t)(tempRegValue[i+6])<<(8*i);
-      }
-  }
-
-}
-
-
-/**
- * @brief  Initializes the SPIRIT Basic packet addresses according to the specified
- *         parameters in the PktBasicAddressesInit struct.
- * @param  pxPktBasicAddresses Basic packet addresses init structure.
- *         This parameter is a pointer to @ref PktBasicAddresses.
- * @retval None.
- */
-void SpiritPktBasicAddressesInit(PktBasicAddressesInit* pxPktBasicAddresses)
-{
-  uint8_t tempRegValue[3];
-
-  /* Check the parameters */
-  s_assert_param(IS_SPIRIT_FUNCTIONAL_STATE(pxPktBasicAddresses->xFilterOnMyAddress));
-  s_assert_param(IS_SPIRIT_FUNCTIONAL_STATE(pxPktBasicAddresses->xFilterOnMulticastAddress));
-  s_assert_param(IS_SPIRIT_FUNCTIONAL_STATE(pxPktBasicAddresses->xFilterOnBroadcastAddress));
-
-
-  /* Reads the PCKT_FLT_OPTIONS ragister */
-  g_xStatus = SpiritSpiReadRegisters(PCKT_FLT_OPTIONS_BASE, 1, &tempRegValue[0]);
-  
-  /* Enables or disables filtering on my address */
-  if(pxPktBasicAddresses->xFilterOnMyAddress == S_ENABLE)
-  {
-    tempRegValue[0] |= PCKT_FLT_OPTIONS_DEST_VS_TX_ADDR_MASK;
-  }
-  else
-  {
-    tempRegValue[0] &= ~PCKT_FLT_OPTIONS_DEST_VS_TX_ADDR_MASK;
-  }
-  
-  /* Enables or disables filtering on multicast address */
-  if(pxPktBasicAddresses->xFilterOnMulticastAddress == S_ENABLE)
-  {
-    tempRegValue[0] |= PCKT_FLT_OPTIONS_DEST_VS_MULTICAST_ADDR_MASK;
-  }
-  else
-  {
-    tempRegValue[0] &= ~PCKT_FLT_OPTIONS_DEST_VS_MULTICAST_ADDR_MASK;
-  }
-  
-  /* Enables or disables filtering on broadcast address */
-  if(pxPktBasicAddresses->xFilterOnBroadcastAddress == S_ENABLE)
-  {
-    tempRegValue[0] |= PCKT_FLT_OPTIONS_DEST_VS_BROADCAST_ADDR_MASK;
-  }
-  else
-  {
-    tempRegValue[0] &= ~PCKT_FLT_OPTIONS_DEST_VS_BROADCAST_ADDR_MASK;
-  }
-  
-  /* Writes the new value on the PCKT_FLT_OPTIONS register */
-  g_xStatus = SpiritSpiWriteRegisters(PCKT_FLT_OPTIONS_BASE, 1, &tempRegValue[0]);
-  
-  /* Fills the array with the addresses passed in the structure */
-  tempRegValue[0] = pxPktBasicAddresses->cBroadcastAddress;
-  tempRegValue[1] = pxPktBasicAddresses->cMulticastAddress;
-  tempRegValue[2] = pxPktBasicAddresses->cMyAddress;
-  
-  /* Writes values on the PCKT_FLT_GOALS registers */
-  g_xStatus = SpiritSpiWriteRegisters(PCKT_FLT_GOALS_BROADCAST_BASE, 3, tempRegValue);
-  
-  
-}
-
-
-/**
- * @brief  Returns the SPIRIT Basic packet addresses structure according to the specified
- *         parameters in the registers.
- * @param  pxPktBasicAddresses Basic packet addresses init structure.
- *         This parameter is a pointer to @ref PktBasicAddresses.
- * @retval None.
- */
-void SpiritPktBasicGetAddressesInfo(PktBasicAddressesInit* pxPktBasicAddresses)
-{
-  uint8_t tempRegValue[3];
-
-  /* Reads values on the PCKT_FLT_GOALS registers */
-  g_xStatus = SpiritSpiReadRegisters(PCKT_FLT_GOALS_BROADCAST_BASE, 3, tempRegValue);
-
-  /* Fit the structure with the read addresses */
-  pxPktBasicAddresses->cBroadcastAddress = tempRegValue[0];
-  pxPktBasicAddresses->cMulticastAddress = tempRegValue[1];
-  pxPktBasicAddresses->cMyAddress = tempRegValue[2];
-
-  g_xStatus = SpiritSpiReadRegisters(PCKT_FLT_OPTIONS_BASE, 1, &tempRegValue[0]);
-
-  /* Fit the structure with the read filtering bits */
-  pxPktBasicAddresses->xFilterOnBroadcastAddress = (SpiritFunctionalState)((tempRegValue[0] >> 1) & 0x01);
-  pxPktBasicAddresses->xFilterOnMulticastAddress = (SpiritFunctionalState)((tempRegValue[0] >> 2) & 0x01);
-  pxPktBasicAddresses->xFilterOnMyAddress = (SpiritFunctionalState)((tempRegValue[0] >> 3) & 0x01);
-
-}
-
-
-/**
- * @brief  Configures the Basic packet format as packet used by SPIRIT.
- * @param  None.
- * @retval None.
- */
-void SpiritPktBasicSetFormat(void)
-{
-  uint8_t tempRegValue;
-
-  /* Reads the register value */
-  g_xStatus = SpiritSpiReadRegisters(PCKTCTRL3_BASE, 1, &tempRegValue);
-
-  /* Build the new value. Also set to 0 the direct RX mode bits */
-  tempRegValue &= 0x0F;
-  tempRegValue |= (uint8_t)PCKTCTRL3_PCKT_FRMT_BASIC;
-
-  /* Writes the  value on the PCKTCTRL3 register */
-  g_xStatus = SpiritSpiWriteRegisters(PCKTCTRL3_BASE, 1, &tempRegValue);
-
-  /* Reads the PCKTCTRL1_BASE register */
-  g_xStatus = SpiritSpiReadRegisters(PCKTCTRL1_BASE, 1, &tempRegValue);
-
-  /* Build the new value. Set to 0 the direct TX mode bits */
-  tempRegValue &= 0xF3;
-
-  /* Writes the value on the PCKTCTRL1 register */
-  g_xStatus = SpiritSpiWriteRegisters(PCKTCTRL1_BASE, 1, &tempRegValue);
-
-  /* Reads the PROTOCOL1 register */
-  g_xStatus = SpiritSpiReadRegisters(PROTOCOL1_BASE, 1, &tempRegValue);
-
-  /* Mask a reserved bit */
-  tempRegValue &= ~0x20;
-
-  /* Writes the value on register */
-  g_xStatus = SpiritSpiWriteRegisters(PROTOCOL1_BASE, 1, &tempRegValue);
-}
-
-
-/**
- * @brief  Sets the address length for SPIRIT Basic packets.
- * @param  xAddressField length of ADDRESS in bytes.
- *         This parameter can be: S_ENABLE or S_DISABLE.
- * @retval None.
- */
-void SpiritPktBasicAddressField(SpiritFunctionalState xAddressField)
-{
-  uint8_t tempRegValue;
-
-  /* Check the parameters */
-  s_assert_param(IS_SPIRIT_FUNCTIONAL_STATE(xAddressField));
-
-  /* Reads the PCKTCTRL4 register value */
-  g_xStatus = SpiritSpiReadRegisters(PCKTCTRL4_BASE, 1, &tempRegValue);
-
-  /* Build the address length for the register */
-  if(xAddressField==S_ENABLE)
-  {
-    tempRegValue |= 0x08;
-  }
-  else
-  {
-    tempRegValue &= 0x07;
-  }
-
-  /* Writes the new value on the PCKTCTRL4 register */
-  g_xStatus = SpiritSpiWriteRegisters(PCKTCTRL4_BASE, 1, &tempRegValue);
-
-}
-
-
-/**
- * @brief  Specifies if the Address field for SPIRIT Basic packets is enabled or disabled.
- * @param  None.
- * @retval SpiritFunctionalState Notifies if the address field is enabled or disabled.
- */
-SpiritFunctionalState SpiritPktBasicGetAddressField(void)
-{
-  uint8_t tempRegValue;
-
-  /* Reads the PCKTCTRL4 register value */
-  g_xStatus = SpiritSpiReadRegisters(PCKTCTRL4_BASE, 1, &tempRegValue);
-
-  /* Returns the address field value */
-  if(tempRegValue & PCKTCTRL4_ADDRESS_LEN_MASK)
-  {
-    return S_ENABLE;
-  }
-  else
-  {
-    return S_DISABLE;
-  }
-
-}
-
-
-/**
- * @brief  Sets the payload length for SPIRIT Basic packets. Since the packet length
- *         depends from the address and the control field size, this
- *         function reads the correspondent registers in order to determine
- *         the correct packet length to be written.
- * @param  nPayloadLength payload length in bytes.
- *         This parameter is an uint16_t.
- * @retval None.
- */
-void SpiritPktBasicSetPayloadLength(uint16_t nPayloadLength)
-{
-  uint8_t tempRegValue[2];
-  uint16_t overSize=0;
-
-  /* Computes the oversize (address + control) size */
-  if(SpiritPktBasicGetAddressField())
-  {
-    overSize=1;
-  }
-  overSize += (uint16_t) SpiritPktBasicGetControlLength();
-
-  /* Computes PCKTLEN0 value from nPayloadLength */
-  tempRegValue[1]=BASIC_BUILD_PCKTLEN0(nPayloadLength+overSize);
-  /* Computes PCKTLEN1 value from nPayloadLength */
-  tempRegValue[0]=BASIC_BUILD_PCKTLEN1(nPayloadLength+overSize);
-
-  /* Writes data on the PCKTLEN1/0 register */
-  g_xStatus = SpiritSpiWriteRegisters(PCKTLEN1_BASE, 2, tempRegValue);
-
-}
-
-
-/**
- * @brief  Returns the payload length for SPIRIT Basic packets. Since the
- *         packet length depends from the address and the control
- *         field size, this function reads the correspondent
- *         registers in order to determine the correct payload length
- *         to be returned.
- * @param  None.
- * @retval uint16_t Payload length in bytes.
- */
-uint16_t SpiritPktBasicGetPayloadLength(void)
-{
-  uint8_t tempRegValue[2];
-  uint16_t overSize=0;
-
-  /* Computes the oversize (address + control) size */
-  if(SpiritPktBasicGetAddressField())
-  {
-    overSize=1;
-  }
-  overSize += (uint16_t) SpiritPktBasicGetControlLength();
-
-  /* Reads the packet length registers */
-  g_xStatus = SpiritSpiReadRegisters(PCKTLEN1_BASE, 2, tempRegValue);
-
-  /* Returns the packet length */
-  return ((((uint16_t)tempRegValue[0])<<8) + (uint16_t) tempRegValue[1]) - overSize;
-}
-
-/**
- * @brief  Returns the packet length field of the received packet.
- * @param  None.
- * @retval uint16_t Packet length.
- */
-uint16_t SpiritPktBasicGetReceivedPktLength(void)
-{
-  uint8_t tempRegValue[2];
-  uint16_t overSize=0;
-
-  /* Computes the oversize (address + control) size */
-  if(SpiritPktBasicGetAddressField())
-  {
-    overSize=1;
-  }
-  overSize += (uint16_t) SpiritPktBasicGetControlLength();
-  
-  /* Reads the RX_PCKT_LENx registers value */
-  g_xStatus = SpiritSpiReadRegisters(RX_PCKT_LEN1_BASE, 2, tempRegValue);
-
-  /* Rebuild and return the length field */
-  return (((((uint16_t) tempRegValue[0]) << 8) + (uint16_t) tempRegValue[1]) - overSize);
-}
-
-/**
- * @brief  Computes and sets the variable payload length for SPIRIT Basic packets.
- * @param  nMaxPayloadLength payload length in bytes.
- *         This parameter is an uint16_t.
- * @param  xAddressField Enable or Disable Address Field.
- *         This parameter can be S_ENABLE or S_DISABLE.
- * @param  xControlLength Control length in bytes.
- *         This parameter can be any value of @ref BasicControlLength.
- * @retval None.
- */
-void SpiritPktBasicSetVarLengthWidth(uint16_t nMaxPayloadLength, SpiritFunctionalState xAddressField, BasicControlLength xControlLength)
-{
-  uint8_t tempRegValue,
-          addressLength,
-          i;
-  uint32_t packetLength;
-
-  /* Sets the address length according to xAddressField */
-  if(xAddressField == S_ENABLE)
-  {
-    addressLength=1;
-  }
-  else
-  {
-    addressLength=0;
-  }
-
-  /* packet length = payload length + address length + control length */
-  packetLength=nMaxPayloadLength+addressLength+xControlLength;
-
-  /* Computes the number of bits */
-  for(i=0;i<16;i++)
-  {
-    if(packetLength == 0) break;
-    {
-    packetLength >>= 1;
-    }
-  }
-  i==0 ? i=1 : i;
-
-  /* Reads the PCKTCTRL3 register value */
-  g_xStatus = SpiritSpiReadRegisters(PCKTCTRL3_BASE, 1, &tempRegValue);
-
-  /* Build value for the length width */
-  tempRegValue &= ~PCKTCTRL3_LEN_WID_MASK;
-  tempRegValue |= (uint8_t)(i-1);
-
-  /* Writes the PCKTCTRL3 register value */
-  g_xStatus = SpiritSpiWriteRegisters(PCKTCTRL3_BASE, 1, &tempRegValue);
-
-}
-
-
-
-/**
- *@}
- */
-
-/**
- *@}
- */
-
-
-/**
- *@}
- */
-
-
-
-/******************* (C) COPYRIGHT 2015 STMicroelectronics *****END OF FILE****/