mirror of
https://github.com/DarkFlippers/unleashed-firmware
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203 lines
8.2 KiB
C
203 lines
8.2 KiB
C
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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: ST25R391x firmware
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* Revision:
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* LANGUAGE: ISO C99
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*/
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/*! \file rfal_iso15693_2.h
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*
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* \author Ulrich Herrmann
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*
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* \brief Implementation of ISO-15693-2
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*
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*/
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/*!
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*
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*/
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#ifndef RFAL_ISO_15693_2_H
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#define RFAL_ISO_15693_2_H
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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 "platform.h"
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#include "st_errno.h"
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/*
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******************************************************************************
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* GLOBAL DATATYPES
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******************************************************************************
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*/
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/*! Enum holding possible VCD codings */
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typedef enum
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{
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ISO15693_VCD_CODING_1_4,
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ISO15693_VCD_CODING_1_256
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}iso15693VcdCoding_t;
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/*! Enum holding possible VICC datarates */
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/*! Configuration parameter used by #iso15693PhyConfigure */
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typedef struct
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{
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iso15693VcdCoding_t coding; /*!< desired VCD coding */
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uint32_t speedMode; /*!< 0: normal mode, 1: 2^1 = x2 Fast mode, 2 : 2^2 = x4 mode, 3 : 2^3 = x8 mode - all rx pulse numbers and times are divided by 1,2,4,8 */
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}iso15693PhyConfig_t;
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/*! Parameters how the stream mode should work */
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struct iso15693StreamConfig {
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uint8_t useBPSK; /*!< 0: subcarrier, 1:BPSK */
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uint8_t din; /*!< the divider for the in subcarrier frequency: fc/2^din */
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uint8_t dout; /*!< the divider for the in subcarrier frequency fc/2^dout */
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uint8_t report_period_length; /*!< the length of the reporting period 2^report_period_length*/
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};
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/*
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******************************************************************************
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* GLOBAL CONSTANTS
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******************************************************************************
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*/
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#define ISO15693_REQ_FLAG_TWO_SUBCARRIERS 0x01U /*!< Flag indication that communication uses two subcarriers */
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#define ISO15693_REQ_FLAG_HIGH_DATARATE 0x02U /*!< Flag indication that communication uses high bitrate */
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#define ISO15693_MASK_FDT_LISTEN (65) /*!< t1min = 308,2us = 4192/fc = 65.5 * 64/fc */
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/*! t1max = 323,3us = 4384/fc = 68.5 * 64/fc
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* 12 = 768/fc unmodulated time of single subcarrior SoF */
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#define ISO15693_FWT (69 + 12)
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/*
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******************************************************************************
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* GLOBAL FUNCTION PROTOTYPES
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******************************************************************************
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*/
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/*!
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*****************************************************************************
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* \brief Initialize the ISO15693 phy
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*
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* \param[in] config : ISO15693 phy related configuration (See #iso15693PhyConfig_t)
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* \param[out] needed_stream_config : return a pointer to the stream config
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* needed for this iso15693 config. To be used for configure RF chip.
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*
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* \return ERR_IO : Error during communication.
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* \return ERR_NONE : No error.
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*
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*****************************************************************************
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*/
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extern ReturnCode iso15693PhyConfigure(const iso15693PhyConfig_t* config,
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const struct iso15693StreamConfig ** needed_stream_config );
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/*!
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*****************************************************************************
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* \brief Return current phy configuration
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*
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* This function returns current Phy configuration previously
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* set by #iso15693PhyConfigure
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*
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* \param[out] config : ISO15693 phy configuration.
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*
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* \return ERR_NONE : No error.
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*
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*****************************************************************************
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*/
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extern ReturnCode iso15693PhyGetConfiguration(iso15693PhyConfig_t* config);
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/*!
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*****************************************************************************
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* \brief Code an ISO15693 compatible frame
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*
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* This function takes \a length bytes from \a buffer, perform proper
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* encoding and sends out the frame to the ST25R391x.
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*
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* \param[in] buffer : data to send, modified to adapt flags.
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* \param[in] length : number of bytes to send.
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* \param[in] sendCrc : If set to true, CRC is appended to the frame
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* \param[in] sendFlags: If set to true, flag field is sent according to
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* ISO15693.
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* \param[in] picopassMode : If set to true, the coding will be according to Picopass
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* \param[out] subbit_total_length : Return the complete bytes which need to
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* be send for the current coding
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* \param[in,out] offset : Set to 0 for first transfer, function will update it to
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point to next byte to be coded
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* \param[out] outbuf : buffer where the function will store the coded subbit stream
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* \param[out] outBufSize : the size of the output buffer
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* \param[out] actOutBufSize : the amount of data stored into the buffer at this call
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*
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* \return ERR_IO : Error during communication.
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* \return ERR_AGAIN : Data was not coded all the way. Call function again with a new/emptied buffer
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* \return ERR_NO_MEM : In case outBuf is not big enough. Needs to have at
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least 5 bytes for 1of4 coding and 65 bytes for 1of256 coding
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* \return ERR_NONE : No error.
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*
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*****************************************************************************
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*/
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extern ReturnCode iso15693VCDCode(uint8_t* buffer, uint16_t length, bool sendCrc, bool sendFlags, bool picopassMode,
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uint16_t *subbit_total_length, uint16_t *offset,
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uint8_t* outbuf, uint16_t outBufSize, uint16_t* actOutBufSize);
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/*!
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*****************************************************************************
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* \brief Receive an ISO15693 compatible frame
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*
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* This function receives an ISO15693 frame from the ST25R391x, decodes the frame
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* and writes the raw data to \a buffer.
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* \note Buffer needs to be big enough to hold CRC also (+2 bytes)
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*
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* \param[in] inBuf : buffer with the hamming coded stream to be decoded
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* \param[in] inBufLen : number of bytes to decode (=length of buffer).
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* \param[out] outBuf : buffer where received data shall be written to.
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* \param[in] outBufLen : Length of output buffer, should be approx twice the size of inBuf
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* \param[out] outBufPos : The number of decoded bytes. Could be used in
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* extended implementation to allow multiple calls
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* \param[out] bitsBeforeCol : in case of ERR_COLLISION this value holds the
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* number of bits in the current byte where the collision happened.
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* \param[in] ignoreBits : number of bits in the beginning where collisions will be ignored
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* \param[in] picopassMode : if set to true, the decoding will be according to Picopass
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*
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* \return ERR_COLLISION : collision occured, data uncorrect
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* \return ERR_CRC : CRC error, data uncorrect
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* \return ERR_TIMEOUT : timeout waiting for data.
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* \return ERR_NONE : No error.
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*
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*****************************************************************************
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*/
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extern ReturnCode iso15693VICCDecode(const uint8_t *inBuf,
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uint16_t inBufLen,
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uint8_t* outBuf,
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uint16_t outBufLen,
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uint16_t* outBufPos,
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uint16_t* bitsBeforeCol,
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uint16_t ignoreBits,
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bool picopassMode );
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#endif /* RFAL_ISO_15693_2_H */
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