Diff: libs/spirit1/SPIRIT1_Library/Inc/SPIRIT_Csma.h

Revision:

0:4fb29d9ee571

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/libs/spirit1/SPIRIT1_Library/Inc/SPIRIT_Csma.h	Thu Oct 13 15:41:39 2016 +0200
@@ -0,0 +1,263 @@
+/**
+  ******************************************************************************
+ * @file    SPIRIT_Csma.h
+  * @author  VMA division - AMS
+  * @version 3.2.2
+  * @date    08-July-2015
+ * @brief   Configuration and management of SPIRIT CSMA.
+ * @details
+ *
+ * The Spirit CSMA feature, when configured and enabled, is transparent
+ * for the user. It means the user has only to call the <i>@ref SpiritCsmaInit()</i>
+ * function on a filled structure and then enable the CSMA policy using the <i>@ref SpiritCsma()</i>
+ * function.
+ *
+ * <b>Example:</b>
+ * @code
+ *
+ * CsmaInit csmaInit={
+ *   S_DISABLE,         // persistent mode
+ *   TBIT_TIME_64,      // Tbit time
+ *   TCCA_TIME_3,       // Tcca time
+ *   5,                 // max number of backoffs
+ *   0xFA21,            // BU counter seed
+ *   32                 // CU prescaler
+ * };
+ *
+ * ...
+ *
+ * SpiritCsmaInit(&csmaInit);
+ * SpiritCsma(S_ENABLE);
+ *
+ *
+ * @endcode
+ *
+ * @note The CS status depends of the RSSI threshold set. Please see the Spirit_Qi
+ * module for 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.
+  *
+  ******************************************************************************
+ */
+
+/* Define to prevent recursive inclusion -------------------------------------*/
+#ifndef __SPIRIT_CSMA_H
+#define __SPIRIT_CSMA_H
+
+
+/* Includes ------------------------------------------------------------------*/
+
+#include "SPIRIT_Types.h"
+#include "SPIRIT_Regs.h"
+
+
+#ifdef __cplusplus
+ extern "C" {
+#endif
+
+
+/**
+ * @addtogroup SPIRIT_Libraries
+ * @{
+ */
+
+
+/**
+ * @defgroup SPIRIT_Csma        CSMA
+ * @brief Configuration and management of SPIRIT CSMA.
+ * @details See the file <i>@ref SPIRIT_Csma.h</i> for more details.
+ * @{
+ */
+
+/**
+ * @defgroup Csma_Exported_Types        CSMA Exported Types
+ * @{
+ */
+
+
+/**
+ * @brief  Multiplier for Tcca time enumeration (Tcca = Multiplier*Tbit).
+ */
+typedef enum
+{
+  TBIT_TIME_64 = CSMA_CCA_PERIOD_64TBIT,      /*!< CSMA/CA: Sets CCA period to 64*TBIT */
+  TBIT_TIME_128 = CSMA_CCA_PERIOD_128TBIT,    /*!< CSMA/CA: Sets CCA period to 128*TBIT */
+  TBIT_TIME_256 = CSMA_CCA_PERIOD_256TBIT,    /*!< CSMA/CA: Sets CCA period to 256*TBIT */
+  TBIT_TIME_512 = CSMA_CCA_PERIOD_512TBIT,    /*!< CSMA/CA: Sets CCA period to 512*TBIT */
+}CcaPeriod;
+
+#define IS_CCA_PERIOD(PERIOD)   (PERIOD == TBIT_TIME_64 || \
+				 PERIOD == TBIT_TIME_128 || \
+				 PERIOD == TBIT_TIME_256 || \
+				 PERIOD == TBIT_TIME_512)
+
+
+/**
+ * @brief  Multiplier of Tcca time enumeration to obtain Tlisten (Tlisten = [1...15]*Tcca).
+ */
+typedef enum
+{
+  TCCA_TIME_0   = 0x00,     /*!< CSMA/CA: Sets CCA length to 0 */
+  TCCA_TIME_1   = 0x10,     /*!< CSMA/CA: Sets CCA length to 1*TLISTEN */
+  TCCA_TIME_2   = 0x20,     /*!< CSMA/CA: Sets CCA length to 2*TLISTEN */
+  TCCA_TIME_3   = 0x30,     /*!< CSMA/CA: Sets CCA length to 3*TLISTEN */
+  TCCA_TIME_4   = 0x40,     /*!< CSMA/CA: Sets CCA length to 4*TLISTEN */
+  TCCA_TIME_5   = 0x50,     /*!< CSMA/CA: Sets CCA length to 5*TLISTEN */
+  TCCA_TIME_6   = 0x60,     /*!< CSMA/CA: Sets CCA length to 6*TLISTEN */
+  TCCA_TIME_7   = 0x70,     /*!< CSMA/CA: Sets CCA length to 7*TLISTEN */
+  TCCA_TIME_8   = 0x80,     /*!< CSMA/CA: Sets CCA length to 8*TLISTEN */
+  TCCA_TIME_9   = 0x90,     /*!< CSMA/CA: Sets CCA length to 9*TLISTEN */
+  TCCA_TIME_10  = 0xA0,     /*!< CSMA/CA: Sets CCA length to 10*TLISTEN */
+  TCCA_TIME_11  = 0xB0,     /*!< CSMA/CA: Sets CCA length to 11*TLISTEN */
+  TCCA_TIME_12  = 0xC0,     /*!< CSMA/CA: Sets CCA length to 12*TLISTEN */
+  TCCA_TIME_13  = 0xD0,     /*!< CSMA/CA: Sets CCA length to 13*TLISTEN */
+  TCCA_TIME_14  = 0xE0,     /*!< CSMA/CA: Sets CCA length to 14*TLISTEN */
+  TCCA_TIME_15  = 0xF0,     /*!< CSMA/CA: Sets CCA length to 15*TLISTEN */
+}CsmaLength;
+
+#define IS_CSMA_LENGTH(LENGTH)	(LENGTH == TCCA_TIME_0 || \
+                                 LENGTH == TCCA_TIME_1 || \
+				 LENGTH == TCCA_TIME_2 || \
+				 LENGTH == TCCA_TIME_3 || \
+				 LENGTH == TCCA_TIME_4 || \
+				 LENGTH == TCCA_TIME_5 || \
+				 LENGTH == TCCA_TIME_6 || \
+				 LENGTH == TCCA_TIME_7 || \
+				 LENGTH == TCCA_TIME_8 || \
+				 LENGTH == TCCA_TIME_9 || \
+				 LENGTH == TCCA_TIME_10 || \
+				 LENGTH == TCCA_TIME_11 || \
+				 LENGTH == TCCA_TIME_12 || \
+				 LENGTH == TCCA_TIME_13 || \
+				 LENGTH == TCCA_TIME_14 || \
+				 LENGTH == TCCA_TIME_15)
+
+
+/**
+  * @brief  SPIRIT CSMA Init structure definition
+  */
+typedef struct
+{
+  SpiritFunctionalState     xCsmaPersistentMode;          /*!< Specifies if the CSMA persistent mode has to be on or off.
+                                                               This parameter can be S_ENABLE or S_DISABLE */
+  CcaPeriod                 xMultiplierTbit;              /*!< Specifies the Tbit multiplier to obtain the Tcca.
+                                                               This parameter can be a value of @ref CcaPeriod */
+  CsmaLength                xCcaLength;                   /*!< Specifies the Tcca multiplier to determinate the Tlisten.
+                                                               This parameter can be a value of @ref CsmaLength. */
+  uint8_t                   cMaxNb;                       /*!< Specifies the max number of backoff cycles. Not used in persistent mode.
+                                                               This parameter is an uint8_t. */
+  uint16_t                  nBuCounterSeed;               /*!< Specifies the BU counter seed. Not used in persistent mode.
+                                                               This parameter can be a value of 16 bits. */
+  uint8_t                   cBuPrescaler;                 /*!< Specifies the BU prescaler. Not used in persistent mode.
+                                                               This parameter can be a value of 6 bits. */
+}CsmaInit;
+
+
+/**
+ *@}
+ */
+
+
+/**
+ * @defgroup Csma_Exported_Constants    CSMA Exported Constants
+ * @{
+ */
+
+/**
+ * @defgroup Csma_Parameters            CSMA Parameters
+ * @{
+ */
+
+#define IS_BU_COUNTER_SEED(SEED)	(SEED!=0)
+#define IS_BU_PRESCALER(PRESCALER)	(PRESCALER<64)
+#define IS_CMAX_NB(NB)			(NB<8)
+
+/**
+ *@}
+ */
+
+/**
+ *@}
+ */
+
+
+/**
+ * @defgroup Csma_Exported_Macros       CSMA Exported Macros
+ * @{
+ */
+
+
+/**
+ *@}
+ */
+
+
+/**
+ * @defgroup Csma_Exported_Functions    CSMA Exported Functions
+ * @{
+ */
+
+void SpiritCsmaInit(CsmaInit* pxCsmaInit);
+void SpiritCsmaGetInfo(CsmaInit* pxCsmaInit);
+void SpiritCsma(SpiritFunctionalState xNewState);
+SpiritFunctionalState SpiritCsmaGetCsma(void);
+void SpiritCsmaPersistentMode(SpiritFunctionalState xNewState);
+SpiritFunctionalState SpiritCsmaGetPersistentMode(void);
+void SpiritCsmaSeedReloadMode(SpiritFunctionalState xNewState);
+SpiritFunctionalState SpiritCsmaGetSeedReloadMode(void);
+void SpiritCsmaSetBuCounterSeed(uint16_t nBuCounterSeed);
+uint16_t SpiritCsmaGetBuCounterSeed(void);
+void SpiritCsmaSetBuPrescaler(uint8_t cBuPrescaler);
+uint8_t SpiritCsmaGetBuPrescaler(void);
+void SpiritCsmaSetCcaPeriod(CcaPeriod xMultiplierTbit);
+CcaPeriod SpiritCsmaGetCcaPeriod(void);
+void SpiritCsmaSetCcaLength(CsmaLength xCcaLength);
+uint8_t SpiritCsmaGetCcaLength(void);
+void SpiritCsmaSetMaxNumberBackoff(uint8_t cMaxNb);
+uint8_t SpiritCsmaGetMaxNumberBackoff(void);
+
+
+/**
+ *@}
+ */
+
+/**
+ *@}
+ */
+
+
+/**
+ *@}
+ */
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif
+
+/******************* (C) COPYRIGHT 2015 STMicroelectronics *****END OF FILE****/