650 lines
22 KiB
C
Executable File
650 lines
22 KiB
C
Executable File
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/******************************************************************************
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* \attention
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*
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* <h2><center>© COPYRIGHT 2020 STMicroelectronics</center></h2>
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*
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* Licensed under ST MYLIBERTY SOFTWARE LICENSE AGREEMENT (the "License");
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* You may not use this file except in compliance with the License.
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* You may obtain a copy of the License at:
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*
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* www.st.com/myliberty
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied,
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* AND SPECIFICALLY DISCLAIMING THE IMPLIED WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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******************************************************************************/
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/*
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* PROJECT: ST25R3916 firmware
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* Revision:
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* LANGUAGE: ISO C99
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*/
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/*! \file
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*
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* \author Gustavo Patricio
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*
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* \brief Implementation of ST25R3916 communication
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*
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*/
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/*
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******************************************************************************
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* INCLUDES
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******************************************************************************
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*/
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#include "st25r3916.h"
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#include "st25r3916_com.h"
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#include "st25r3916_led.h"
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#include "st_errno.h"
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#include "platform.h"
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#include "utils.h"
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/*
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******************************************************************************
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* LOCAL DEFINES
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******************************************************************************
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*/
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#define ST25R3916_OPTIMIZE true /*!< Optimization switch: false always write value to register */
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#define ST25R3916_I2C_ADDR (0xA0U >> 1) /*!< ST25R3916's default I2C address */
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#define ST25R3916_REG_LEN 1U /*!< Byte length of a ST25R3916 register */
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#define ST25R3916_WRITE_MODE (0U << 6) /*!< ST25R3916 Operation Mode: Write */
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#define ST25R3916_READ_MODE (1U << 6) /*!< ST25R3916 Operation Mode: Read */
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#define ST25R3916_CMD_MODE (3U << 6) /*!< ST25R3916 Operation Mode: Direct Command */
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#define ST25R3916_FIFO_LOAD (0x80U) /*!< ST25R3916 Operation Mode: FIFO Load */
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#define ST25R3916_FIFO_READ (0x9FU) /*!< ST25R3916 Operation Mode: FIFO Read */
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#define ST25R3916_PT_A_CONFIG_LOAD (0xA0U) /*!< ST25R3916 Operation Mode: Passive Target Memory A-Config Load */
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#define ST25R3916_PT_F_CONFIG_LOAD (0xA8U) /*!< ST25R3916 Operation Mode: Passive Target Memory F-Config Load */
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#define ST25R3916_PT_TSN_DATA_LOAD (0xACU) /*!< ST25R3916 Operation Mode: Passive Target Memory TSN Load */
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#define ST25R3916_PT_MEM_READ (0xBFU) /*!< ST25R3916 Operation Mode: Passive Target Memory Read */
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#define ST25R3916_CMD_LEN (1U) /*!< ST25R3916 CMD length */
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#define ST25R3916_BUF_LEN (ST25R3916_CMD_LEN+ST25R3916_FIFO_DEPTH) /*!< ST25R3916 communication buffer: CMD + FIFO length */
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/*
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******************************************************************************
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* MACROS
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******************************************************************************
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*/
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#ifdef RFAL_USE_I2C
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#define st25r3916I2CStart() platformI2CStart() /*!< ST25R3916 HAL I2C driver macro to start a I2C transfer */
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#define st25r3916I2CStop() platformI2CStop() /*!< ST25R3916 HAL I2C driver macro to stop a I2C transfer */
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#define st25r3916I2CRepeatStart() platformI2CRepeatStart() /*!< ST25R3916 HAL I2C driver macro to repeat Start */
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#define st25r3916I2CSlaveAddrWR( sA ) platformI2CSlaveAddrWR( sA ) /*!< ST25R3916 HAL I2C driver macro to repeat Start */
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#define st25r3916I2CSlaveAddrRD( sA ) platformI2CSlaveAddrRD( sA ) /*!< ST25R3916 HAL I2C driver macro to repeat Start */
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#endif /* RFAL_USE_I2C */
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#if defined(ST25R_COM_SINGLETXRX) && !defined(RFAL_USE_I2C)
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static uint8_t comBuf[ST25R3916_BUF_LEN]; /*!< ST25R3916 communication buffer */
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static uint16_t comBufIt; /*!< ST25R3916 communication buffer iterator */
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#endif /* ST25R_COM_SINGLETXRX */
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/*
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******************************************************************************
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* LOCAL FUNCTION PROTOTYPES
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******************************************************************************
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*/
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/*!
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******************************************************************************
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* \brief ST25R3916 communication Start
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*
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* This method performs the required actions to start communications with
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* ST25R3916, either by SPI or I2C
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******************************************************************************
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*/
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static void st25r3916comStart( void );
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/*!
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******************************************************************************
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* \brief ST25R3916 communication Stop
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*
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* This method performs the required actions to terminate communications with
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* ST25R3916, either by SPI or I2C
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******************************************************************************
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*/
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static void st25r3916comStop( void );
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/*!
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******************************************************************************
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* \brief ST25R3916 communication Repeat Start
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*
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* This method performs the required actions to repeat start a transmission
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* with ST25R3916, either by SPI or I2C
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******************************************************************************
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*/
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#ifdef RFAL_USE_I2C
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static void st25r3916comRepeatStart( void );
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#else
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#define st25r3916comRepeatStart()
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#endif /* RFAL_USE_I2C */
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/*!
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******************************************************************************
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* \brief ST25R3916 communication Tx
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*
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* This method performs the required actions to transmit the given buffer
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* to ST25R3916, either by SPI or I2C
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*
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* \param[in] txBuf : the buffer to transmit
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* \param[in] txLen : the length of the buffer to transmit
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* \param[in] last : true if last data to be transmitted
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* \param[in] txOnly : true no reception is to be performed
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*
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******************************************************************************
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*/
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static void st25r3916comTx( const uint8_t* txBuf, uint16_t txLen, bool last, bool txOnly );
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/*!
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******************************************************************************
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* \brief ST25R3916 communication Rx
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*
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* This method performs the required actions to receive from ST25R3916 the given
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* amount of bytes, either by SPI or I2C
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*
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* \param[out] rxBuf : the buffer place the received bytes
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* \param[in] rxLen : the length to receive
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*
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******************************************************************************
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*/
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static void st25r3916comRx( uint8_t* rxBuf, uint16_t rxLen );
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/*!
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******************************************************************************
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* \brief ST25R3916 communication Tx Byte
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*
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* This helper method transmits a byte passed by value and not by reference
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*
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* \param[in] txByte : the value of the byte to be transmitted
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* \param[in] last : true if last byte to be transmitted
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* \param[in] txOnly : true no reception is to be performed
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*
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******************************************************************************
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*/
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static void st25r3916comTxByte( uint8_t txByte, bool last, bool txOnly );
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/*
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******************************************************************************
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* LOCAL FUNCTION
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******************************************************************************
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*/
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static void st25r3916comStart( void )
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{
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/* Make this operation atomic, disabling ST25R3916 interrupt during communications*/
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platformProtectST25RComm();
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#ifdef RFAL_USE_I2C
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/* I2C Start and send Slave Address */
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st25r3916I2CStart();
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st25r3916I2CSlaveAddrWR( ST25R3916_I2C_ADDR );
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#else
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/* Perform the chip select */
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platformSpiSelect();
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#if defined(ST25R_COM_SINGLETXRX)
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comBufIt = 0; /* reset local buffer position */
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#endif /* ST25R_COM_SINGLETXRX */
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#endif /* RFAL_USE_I2C */
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}
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/*******************************************************************************/
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static void st25r3916comStop( void )
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{
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#ifdef RFAL_USE_I2C
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/* Generate Stop signal */
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st25r3916I2CStop();
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#else
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/* Release the chip select */
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platformSpiDeselect();
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#endif /* RFAL_USE_I2C */
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/* reEnable the ST25R3916 interrupt */
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platformUnprotectST25RComm();
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}
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/*******************************************************************************/
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#ifdef RFAL_USE_I2C
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static void st25r3916comRepeatStart( void )
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{
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st25r3916I2CRepeatStart();
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st25r3916I2CSlaveAddrRD( ST25R3916_I2C_ADDR );
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}
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#endif /* RFAL_USE_I2C */
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/*******************************************************************************/
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static void st25r3916comTx( const uint8_t* txBuf, uint16_t txLen, bool last, bool txOnly )
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{
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NO_WARNING(last);
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NO_WARNING(txOnly);
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if( txLen > 0U )
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{
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#ifdef RFAL_USE_I2C
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platformI2CTx( txBuf, txLen, last, txOnly );
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#else /* RFAL_USE_I2C */
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#ifdef ST25R_COM_SINGLETXRX
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ST_MEMCPY( &comBuf[comBufIt], txBuf, MIN( txLen, (ST25R3916_BUF_LEN - comBufIt) ) ); /* copy tx data to local buffer */
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comBufIt += MIN( txLen, (ST25R3916_BUF_LEN - comBufIt) ); /* store position on local buffer */
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if( last && txOnly ) /* only perform SPI transaction if no Rx will follow */
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{
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platformSpiTxRx( comBuf, NULL, comBufIt );
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}
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#else
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platformSpiTxRx( txBuf, NULL, txLen );
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#endif /* ST25R_COM_SINGLETXRX */
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#endif /* RFAL_USE_I2C */
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}
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}
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/*******************************************************************************/
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static void st25r3916comRx( uint8_t* rxBuf, uint16_t rxLen )
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{
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if( rxLen > 0U )
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{
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#ifdef RFAL_USE_I2C
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platformI2CRx( rxBuf, rxLen );
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#else /* RFAL_USE_I2C */
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#ifdef ST25R_COM_SINGLETXRX
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ST_MEMSET( &comBuf[comBufIt], 0x00, MIN( rxLen, (ST25R3916_BUF_LEN - comBufIt) ) ); /* clear outgoing buffer */
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platformSpiTxRx( comBuf, comBuf, MIN( (comBufIt + rxLen), ST25R3916_BUF_LEN ) ); /* transceive as a single SPI call */
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ST_MEMCPY( rxBuf, &comBuf[comBufIt], MIN( rxLen, (ST25R3916_BUF_LEN - comBufIt) ) ); /* copy from local buf to output buffer and skip cmd byte */
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#else
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if( rxBuf != NULL)
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{
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ST_MEMSET( rxBuf, 0x00, rxLen ); /* clear outgoing buffer */
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}
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platformSpiTxRx( NULL, rxBuf, rxLen );
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#endif /* ST25R_COM_SINGLETXRX */
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#endif /* RFAL_USE_I2C */
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}
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}
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/*******************************************************************************/
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static void st25r3916comTxByte( uint8_t txByte, bool last, bool txOnly )
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{
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uint8_t val = txByte; /* MISRA 17.8: use intermediate variable */
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st25r3916comTx( &val, ST25R3916_REG_LEN, last, txOnly );
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}
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/*
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******************************************************************************
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* GLOBAL FUNCTIONS
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******************************************************************************
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*/
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/*******************************************************************************/
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ReturnCode st25r3916ReadRegister( uint8_t reg, uint8_t* val )
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{
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return st25r3916ReadMultipleRegisters( reg, val, ST25R3916_REG_LEN );
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}
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/*******************************************************************************/
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ReturnCode st25r3916ReadMultipleRegisters( uint8_t reg, uint8_t* values, uint8_t length )
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{
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if( length > 0U )
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{
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st25r3916comStart();
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/* If is a space-B register send a direct command first */
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if( (reg & ST25R3916_SPACE_B) != 0U )
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{
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st25r3916comTxByte( ST25R3916_CMD_SPACE_B_ACCESS, false, false );
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}
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st25r3916comTxByte( ((reg & ~ST25R3916_SPACE_B) | ST25R3916_READ_MODE), true, false );
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st25r3916comRepeatStart();
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st25r3916comRx( values, length );
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st25r3916comStop();
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}
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return ERR_NONE;
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}
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/*******************************************************************************/
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ReturnCode st25r3916WriteRegister( uint8_t reg, uint8_t val )
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{
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uint8_t value = val; /* MISRA 17.8: use intermediate variable */
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return st25r3916WriteMultipleRegisters( reg, &value, ST25R3916_REG_LEN );
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}
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/*******************************************************************************/
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ReturnCode st25r3916WriteMultipleRegisters( uint8_t reg, const uint8_t* values, uint8_t length )
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{
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if( length > 0U )
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{
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st25r3916comStart();
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if( (reg & ST25R3916_SPACE_B) != 0U )
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{
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st25r3916comTxByte( ST25R3916_CMD_SPACE_B_ACCESS, false, true );
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}
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st25r3916comTxByte( ((reg & ~ST25R3916_SPACE_B) | ST25R3916_WRITE_MODE), false, true );
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st25r3916comTx( values, length, true, true );
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st25r3916comStop();
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/* Send a WriteMultiReg event to LED handling */
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st25r3916ledEvtWrMultiReg( reg, values, length);
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}
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return ERR_NONE;
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}
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/*******************************************************************************/
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ReturnCode st25r3916WriteFifo( const uint8_t* values, uint16_t length )
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{
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if( length > ST25R3916_FIFO_DEPTH )
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{
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return ERR_PARAM;
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}
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if( length > 0U )
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{
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st25r3916comStart();
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st25r3916comTxByte( ST25R3916_FIFO_LOAD, false, true );
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st25r3916comTx( values, length, true, true );
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st25r3916comStop();
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}
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return ERR_NONE;
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}
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/*******************************************************************************/
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ReturnCode st25r3916ReadFifo( uint8_t* buf, uint16_t length )
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{
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if( length > 0U )
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{
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st25r3916comStart();
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st25r3916comTxByte( ST25R3916_FIFO_READ, true, false );
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st25r3916comRepeatStart();
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st25r3916comRx( buf, length );
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st25r3916comStop();
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}
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return ERR_NONE;
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}
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/*******************************************************************************/
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ReturnCode st25r3916WritePTMem( const uint8_t* values, uint16_t length )
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{
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if( length > ST25R3916_PTM_LEN )
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{
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return ERR_PARAM;
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}
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if( length > 0U )
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{
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st25r3916comStart();
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st25r3916comTxByte( ST25R3916_PT_A_CONFIG_LOAD, false, true );
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st25r3916comTx( values, length, true, true );
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st25r3916comStop();
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}
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return ERR_NONE;
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}
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/*******************************************************************************/
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ReturnCode st25r3916ReadPTMem( uint8_t* values, uint16_t length )
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{
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uint8_t tmp[ST25R3916_REG_LEN + ST25R3916_PTM_LEN]; /* local buffer to handle prepended byte on I2C and SPI */
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if( length > 0U )
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{
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if( length > ST25R3916_PTM_LEN )
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{
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return ERR_PARAM;
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}
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st25r3916comStart();
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st25r3916comTxByte( ST25R3916_PT_MEM_READ, true, false );
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st25r3916comRepeatStart();
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st25r3916comRx( tmp, (ST25R3916_REG_LEN + length) ); /* skip prepended byte */
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st25r3916comStop();
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/* Copy PTMem content without prepended byte */
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ST_MEMCPY( values, (tmp+ST25R3916_REG_LEN), length );
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}
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return ERR_NONE;
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}
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/*******************************************************************************/
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ReturnCode st25r3916WritePTMemF( const uint8_t* values, uint16_t length )
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{
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if( length > (ST25R3916_PTM_F_LEN + ST25R3916_PTM_TSN_LEN) )
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{
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return ERR_PARAM;
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}
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if( length > 0U )
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{
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st25r3916comStart();
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st25r3916comTxByte( ST25R3916_PT_F_CONFIG_LOAD, false, true );
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st25r3916comTx( values, length, true, true );
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st25r3916comStop();
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}
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return ERR_NONE;
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}
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/*******************************************************************************/
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ReturnCode st25r3916WritePTMemTSN( const uint8_t* values, uint16_t length )
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{
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if( length > ST25R3916_PTM_TSN_LEN )
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{
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return ERR_PARAM;
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}
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if(length > 0U)
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{
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st25r3916comStart();
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st25r3916comTxByte( ST25R3916_PT_TSN_DATA_LOAD, false, true );
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st25r3916comTx( values, length, true, true );
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st25r3916comStop();
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}
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return ERR_NONE;
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}
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/*******************************************************************************/
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ReturnCode st25r3916ExecuteCommand( uint8_t cmd )
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{
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st25r3916comStart();
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st25r3916comTxByte( (cmd | ST25R3916_CMD_MODE ), true, true );
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st25r3916comStop();
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/* Send a cmd event to LED handling */
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st25r3916ledEvtCmd(cmd);
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return ERR_NONE;
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}
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/*******************************************************************************/
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ReturnCode st25r3916ReadTestRegister( uint8_t reg, uint8_t* val )
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{
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st25r3916comStart();
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st25r3916comTxByte( ST25R3916_CMD_TEST_ACCESS, false, false );
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st25r3916comTxByte( (reg | ST25R3916_READ_MODE), true, false );
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st25r3916comRepeatStart();
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st25r3916comRx( val, ST25R3916_REG_LEN );
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st25r3916comStop();
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return ERR_NONE;
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}
|
|
|
|
|
|
/*******************************************************************************/
|
|
ReturnCode st25r3916WriteTestRegister( uint8_t reg, uint8_t val )
|
|
{
|
|
uint8_t value = val; /* MISRA 17.8: use intermediate variable */
|
|
|
|
st25r3916comStart();
|
|
st25r3916comTxByte( ST25R3916_CMD_TEST_ACCESS, false, true );
|
|
st25r3916comTxByte( (reg | ST25R3916_WRITE_MODE), false, true );
|
|
st25r3916comTx( &value, ST25R3916_REG_LEN, true, true );
|
|
st25r3916comStop();
|
|
|
|
return ERR_NONE;
|
|
}
|
|
|
|
|
|
/*******************************************************************************/
|
|
ReturnCode st25r3916ClrRegisterBits( uint8_t reg, uint8_t clr_mask )
|
|
{
|
|
ReturnCode ret;
|
|
uint8_t rdVal;
|
|
|
|
/* Read current reg value */
|
|
EXIT_ON_ERR( ret, st25r3916ReadRegister(reg, &rdVal) );
|
|
|
|
/* Only perform a Write if value to be written is different */
|
|
if( ST25R3916_OPTIMIZE && (rdVal == (uint8_t)(rdVal & ~clr_mask)) )
|
|
{
|
|
return ERR_NONE;
|
|
}
|
|
|
|
/* Write new reg value */
|
|
return st25r3916WriteRegister(reg, (uint8_t)(rdVal & ~clr_mask) );
|
|
}
|
|
|
|
|
|
/*******************************************************************************/
|
|
ReturnCode st25r3916SetRegisterBits( uint8_t reg, uint8_t set_mask )
|
|
{
|
|
ReturnCode ret;
|
|
uint8_t rdVal;
|
|
|
|
/* Read current reg value */
|
|
EXIT_ON_ERR( ret, st25r3916ReadRegister(reg, &rdVal) );
|
|
|
|
/* Only perform a Write if the value to be written is different */
|
|
if( ST25R3916_OPTIMIZE && (rdVal == (rdVal | set_mask)) )
|
|
{
|
|
return ERR_NONE;
|
|
}
|
|
|
|
/* Write new reg value */
|
|
return st25r3916WriteRegister(reg, (rdVal | set_mask) );
|
|
}
|
|
|
|
|
|
/*******************************************************************************/
|
|
ReturnCode st25r3916ChangeRegisterBits( uint8_t reg, uint8_t valueMask, uint8_t value )
|
|
{
|
|
return st25r3916ModifyRegister(reg, valueMask, (valueMask & value) );
|
|
}
|
|
|
|
|
|
/*******************************************************************************/
|
|
ReturnCode st25r3916ModifyRegister( uint8_t reg, uint8_t clr_mask, uint8_t set_mask )
|
|
{
|
|
ReturnCode ret;
|
|
uint8_t rdVal;
|
|
uint8_t wrVal;
|
|
|
|
/* Read current reg value */
|
|
EXIT_ON_ERR( ret, st25r3916ReadRegister(reg, &rdVal) );
|
|
|
|
/* Compute new value */
|
|
wrVal = (uint8_t)(rdVal & ~clr_mask);
|
|
wrVal |= set_mask;
|
|
|
|
/* Only perform a Write if the value to be written is different */
|
|
if( ST25R3916_OPTIMIZE && (rdVal == wrVal) )
|
|
{
|
|
return ERR_NONE;
|
|
}
|
|
|
|
/* Write new reg value */
|
|
return st25r3916WriteRegister(reg, wrVal );
|
|
}
|
|
|
|
|
|
/*******************************************************************************/
|
|
ReturnCode st25r3916ChangeTestRegisterBits( uint8_t reg, uint8_t valueMask, uint8_t value )
|
|
{
|
|
ReturnCode ret;
|
|
uint8_t rdVal;
|
|
uint8_t wrVal;
|
|
|
|
/* Read current reg value */
|
|
EXIT_ON_ERR( ret, st25r3916ReadTestRegister(reg, &rdVal) );
|
|
|
|
/* Compute new value */
|
|
wrVal = (uint8_t)(rdVal & ~valueMask);
|
|
wrVal |= (uint8_t)(value & valueMask);
|
|
|
|
/* Only perform a Write if the value to be written is different */
|
|
if( ST25R3916_OPTIMIZE && (rdVal == wrVal) )
|
|
{
|
|
return ERR_NONE;
|
|
}
|
|
|
|
/* Write new reg value */
|
|
return st25r3916WriteTestRegister(reg, wrVal );
|
|
}
|
|
|
|
|
|
/*******************************************************************************/
|
|
bool st25r3916CheckReg( uint8_t reg, uint8_t mask, uint8_t val )
|
|
{
|
|
uint8_t regVal;
|
|
|
|
regVal = 0;
|
|
st25r3916ReadRegister( reg, ®Val );
|
|
|
|
return ( (regVal & mask) == val );
|
|
}
|
|
|
|
|
|
/*******************************************************************************/
|
|
bool st25r3916IsRegValid( uint8_t reg )
|
|
{
|
|
if( !(( (int16_t)reg >= (int16_t)ST25R3916_REG_IO_CONF1) && (reg <= (ST25R3916_SPACE_B | ST25R3916_REG_IC_IDENTITY)) ))
|
|
{
|
|
return false;
|
|
}
|
|
return true;
|
|
}
|
|
|