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unleashed-firmware/lib/ST25RFAL002/source/rfal_st25tb.c
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Naming and coding style convention, new linter tool. (#945) 
* Makefile, Scripts: new linter
* About: remove ID from IC
* Firmware: remove double define for DIVC/DIVR
* Scripts: check folder names too. Docker: replace syntax check with make lint.
* Reformat Sources and Migrate to new file naming convention
* Docker: symlink clang-format-12 to clang-format
* Add coding style guide
2022-01-05 19:10:18 +03:00

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/******************************************************************************
* \attention
*
* <h2><center>&copy; COPYRIGHT 2020 STMicroelectronics</center></h2>
*
* Licensed under ST MYLIBERTY SOFTWARE LICENSE AGREEMENT (the "License");
* You may not use this file except in compliance with the License.
* You may obtain a copy of the License at:
*
* www.st.com/myliberty
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied,
* AND SPECIFICALLY DISCLAIMING THE IMPLIED WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
* See the License for the specific language governing permissions and
* limitations under the License.
*
******************************************************************************/
/*
* PROJECT: ST25R391x firmware
* Revision:
* LANGUAGE: ISO C99
*/
/*! \file rfal_st25tb.c
*
* \author Gustavo Patricio
*
* \brief Implementation of ST25TB interface
*
*/
/*
******************************************************************************
* INCLUDES
******************************************************************************
*/
#include "rfal_st25tb.h"
#include "utils.h"
/*
******************************************************************************
* ENABLE SWITCH
******************************************************************************
*/
#ifndef RFAL_FEATURE_ST25TB
#define RFAL_FEATURE_ST25TB false /* ST25TB module configuration missing. Disabled by default */
#endif
#if RFAL_FEATURE_ST25TB
/*
******************************************************************************
* GLOBAL DEFINES
******************************************************************************
*/
#define RFAL_ST25TB_CMD_LEN 1U /*!< ST25TB length of a command */
#define RFAL_ST25TB_SLOTS 16U /*!< ST25TB number of slots */
#define RFAL_ST25TB_SLOTNUM_MASK 0x0FU /*!< ST25TB Slot Number bit mask on SlotMarker */
#define RFAL_ST25TB_SLOTNUM_SHIFT 4U /*!< ST25TB Slot Number shift on SlotMarker */
#define RFAL_ST25TB_INITIATE_CMD1 0x06U /*!< ST25TB Initiate command byte1 */
#define RFAL_ST25TB_INITIATE_CMD2 0x00U /*!< ST25TB Initiate command byte2 */
#define RFAL_ST25TB_PCALL_CMD1 0x06U /*!< ST25TB Pcall16 command byte1 */
#define RFAL_ST25TB_PCALL_CMD2 0x04U /*!< ST25TB Pcall16 command byte2 */
#define RFAL_ST25TB_SELECT_CMD 0x0EU /*!< ST25TB Select command */
#define RFAL_ST25TB_GET_UID_CMD 0x0BU /*!< ST25TB Get UID command */
#define RFAL_ST25TB_COMPLETION_CMD 0x0FU /*!< ST25TB Completion command */
#define RFAL_ST25TB_RESET_INV_CMD 0x0CU /*!< ST25TB Reset to Inventory command */
#define RFAL_ST25TB_READ_BLOCK_CMD 0x08U /*!< ST25TB Read Block command */
#define RFAL_ST25TB_WRITE_BLOCK_CMD 0x09U /*!< ST25TB Write Block command */
#define RFAL_ST25TB_T0 2157U /*!< ST25TB t0 159 us ST25TB RF characteristics */
#define RFAL_ST25TB_T1 2048U /*!< ST25TB t1 151 us ST25TB RF characteristics */
#define RFAL_ST25TB_FWT \
(RFAL_ST25TB_T0 + RFAL_ST25TB_T1) /*!< ST25TB FWT = T0 + T1 */
#define RFAL_ST25TB_TW rfalConvMsTo1fc(7U) /*!< ST25TB TW : Programming time for write max 7ms */
/*
******************************************************************************
* GLOBAL MACROS
******************************************************************************
*/
/*
******************************************************************************
* GLOBAL TYPES
******************************************************************************
*/
/*! Initiate Request */
typedef struct {
uint8_t cmd1; /*!< Initiate Request cmd1: 0x06 */
uint8_t cmd2; /*!< Initiate Request cmd2: 0x00 */
} rfalSt25tbInitiateReq;
/*! Pcall16 Request */
typedef struct {
uint8_t cmd1; /*!< Pcal16 Request cmd1: 0x06 */
uint8_t cmd2; /*!< Pcal16 Request cmd2: 0x04 */
} rfalSt25tbPcallReq;
/*! Select Request */
typedef struct {
uint8_t cmd; /*!< Select Request cmd: 0x0E */
uint8_t chipId; /*!< Chip ID */
} rfalSt25tbSelectReq;
/*! Read Block Request */
typedef struct {
uint8_t cmd; /*!< Select Request cmd: 0x08 */
uint8_t address; /*!< Block address */
} rfalSt25tbReadBlockReq;
/*! Write Block Request */
typedef struct {
uint8_t cmd; /*!< Select Request cmd: 0x09 */
uint8_t address; /*!< Block address */
rfalSt25tbBlock data; /*!< Block Data */
} rfalSt25tbWriteBlockReq;
/*
******************************************************************************
* LOCAL FUNCTION PROTOTYPES
******************************************************************************
*/
/*!
*****************************************************************************
* \brief ST25TB Poller Do Collision Resolution
*
* This method performs ST25TB Collision resolution loop for each slot
*
* \param[in] devLimit : device limit value, and size st25tbDevList
* \param[out] st25tbDevList : ST35TB listener device info
* \param[out] devCnt : Devices found counter
*
* \return colPending : true if a collision was detected
*****************************************************************************
*/
static bool rfalSt25tbPollerDoCollisionResolution(
uint8_t devLimit,
rfalSt25tbListenDevice* st25tbDevList,
uint8_t* devCnt);
/*
******************************************************************************
* LOCAL FUNCTION PROTOTYPES
******************************************************************************
*/
static bool rfalSt25tbPollerDoCollisionResolution(
uint8_t devLimit,
rfalSt25tbListenDevice* st25tbDevList,
uint8_t* devCnt) {
uint8_t i;
uint8_t chipId;
ReturnCode ret;
bool col;
col = false;
for(i = 0; i < RFAL_ST25TB_SLOTS; i++) {
platformDelay(1); /* Wait t2: Answer to new request delay */
if(i == 0U) {
/* Step 2: Send Pcall16 */
ret = rfalSt25tbPollerPcall(&chipId);
} else {
/* Step 3-17: Send Pcall16 */
ret = rfalSt25tbPollerSlotMarker(i, &chipId);
}
if(ret == ERR_NONE) {
/* Found another device */
st25tbDevList[*devCnt].chipID = chipId;
st25tbDevList[*devCnt].isDeselected = false;
/* Select Device, retrieve its UID */
ret = rfalSt25tbPollerSelect(chipId);
/* By Selecting this device, the previous gets Deselected */
if((*devCnt) > 0U) {
st25tbDevList[(*devCnt) - 1U].isDeselected = true;
}
if(ERR_NONE == ret) {
rfalSt25tbPollerGetUID(&st25tbDevList[*devCnt].UID);
}
if(ERR_NONE == ret) {
(*devCnt)++;
}
} else if((ret == ERR_CRC) || (ret == ERR_FRAMING)) {
col = true;
} else {
/* MISRA 15.7 - Empty else */
}
if(*devCnt >= devLimit) {
break;
}
}
return col;
}
/*
******************************************************************************
* LOCAL VARIABLES
******************************************************************************
*/
/*
******************************************************************************
* GLOBAL FUNCTIONS
******************************************************************************
*/
/*******************************************************************************/
ReturnCode rfalSt25tbPollerInitialize(void) {
return rfalNfcbPollerInitialize();
}
/*******************************************************************************/
ReturnCode rfalSt25tbPollerCheckPresence(uint8_t* chipId) {
ReturnCode ret;
uint8_t chipIdRes;
chipIdRes = 0x00;
/* Send Initiate Request */
ret = rfalSt25tbPollerInitiate(&chipIdRes);
/* Check if a transmission error was detected */
if((ret == ERR_CRC) || (ret == ERR_FRAMING)) {
return ERR_NONE;
}
/* Copy chip ID if requested */
if(chipId != NULL) {
*chipId = chipIdRes;
}
return ret;
}
/*******************************************************************************/
ReturnCode rfalSt25tbPollerInitiate(uint8_t* chipId) {
ReturnCode ret;
uint16_t rxLen;
rfalSt25tbInitiateReq initiateReq;
uint8_t rxBuf
[RFAL_ST25TB_CHIP_ID_LEN +
RFAL_ST25TB_CRC_LEN]; /* In case we receive less data that CRC, RF layer will not remove the CRC from buffer */
/* Compute Initiate Request */
initiateReq.cmd1 = RFAL_ST25TB_INITIATE_CMD1;
initiateReq.cmd2 = RFAL_ST25TB_INITIATE_CMD2;
/* Send Initiate Request */
ret = rfalTransceiveBlockingTxRx(
(uint8_t*)&initiateReq,
sizeof(rfalSt25tbInitiateReq),
(uint8_t*)rxBuf,
sizeof(rxBuf),
&rxLen,
RFAL_TXRX_FLAGS_DEFAULT,
RFAL_ST25TB_FWT);
/* Check for valid Select Response */
if((ret == ERR_NONE) && (rxLen != RFAL_ST25TB_CHIP_ID_LEN)) {
return ERR_PROTO;
}
/* Copy chip ID if requested */
if(chipId != NULL) {
*chipId = *rxBuf;
}
return ret;
}
/*******************************************************************************/
ReturnCode rfalSt25tbPollerPcall(uint8_t* chipId) {
ReturnCode ret;
uint16_t rxLen;
rfalSt25tbPcallReq pcallReq;
/* Compute Pcal16 Request */
pcallReq.cmd1 = RFAL_ST25TB_PCALL_CMD1;
pcallReq.cmd2 = RFAL_ST25TB_PCALL_CMD2;
/* Send Pcal16 Request */
ret = rfalTransceiveBlockingTxRx(
(uint8_t*)&pcallReq,
sizeof(rfalSt25tbPcallReq),
(uint8_t*)chipId,
RFAL_ST25TB_CHIP_ID_LEN,
&rxLen,
RFAL_TXRX_FLAGS_DEFAULT,
RFAL_ST25TB_FWT);
/* Check for valid Select Response */
if((ret == ERR_NONE) && (rxLen != RFAL_ST25TB_CHIP_ID_LEN)) {
return ERR_PROTO;
}
return ret;
}
/*******************************************************************************/
ReturnCode rfalSt25tbPollerSlotMarker(uint8_t slotNum, uint8_t* chipIdRes) {
ReturnCode ret;
uint16_t rxLen;
uint8_t slotMarker;
if((slotNum == 0U) || (slotNum > 15U)) {
return ERR_PARAM;
}
/* Compute SlotMarker */
slotMarker =
(((slotNum & RFAL_ST25TB_SLOTNUM_MASK) << RFAL_ST25TB_SLOTNUM_SHIFT) |
RFAL_ST25TB_PCALL_CMD1);
/* Send SlotMarker */
ret = rfalTransceiveBlockingTxRx(
(uint8_t*)&slotMarker,
RFAL_ST25TB_CMD_LEN,
(uint8_t*)chipIdRes,
RFAL_ST25TB_CHIP_ID_LEN,
&rxLen,
RFAL_TXRX_FLAGS_DEFAULT,
RFAL_ST25TB_FWT);
/* Check for valid ChipID Response */
if((ret == ERR_NONE) && (rxLen != RFAL_ST25TB_CHIP_ID_LEN)) {
return ERR_PROTO;
}
return ret;
}
/*******************************************************************************/
ReturnCode rfalSt25tbPollerSelect(uint8_t chipId) {
ReturnCode ret;
uint16_t rxLen;
rfalSt25tbSelectReq selectReq;
uint8_t chipIdRes;
/* Compute Select Request */
selectReq.cmd = RFAL_ST25TB_SELECT_CMD;
selectReq.chipId = chipId;
/* Send Select Request */
ret = rfalTransceiveBlockingTxRx(
(uint8_t*)&selectReq,
sizeof(rfalSt25tbSelectReq),
(uint8_t*)&chipIdRes,
RFAL_ST25TB_CHIP_ID_LEN,
&rxLen,
RFAL_TXRX_FLAGS_DEFAULT,
RFAL_ST25TB_FWT);
/* Check for valid Select Response */
if((ret == ERR_NONE) && ((rxLen != RFAL_ST25TB_CHIP_ID_LEN) || (chipIdRes != chipId))) {
return ERR_PROTO;
}
return ret;
}
/*******************************************************************************/
ReturnCode rfalSt25tbPollerGetUID(rfalSt25tbUID* UID) {
ReturnCode ret;
uint16_t rxLen;
uint8_t getUidReq;
/* Compute Get UID Request */
getUidReq = RFAL_ST25TB_GET_UID_CMD;
/* Send Select Request */
ret = rfalTransceiveBlockingTxRx(
(uint8_t*)&getUidReq,
RFAL_ST25TB_CMD_LEN,
(uint8_t*)UID,
sizeof(rfalSt25tbUID),
&rxLen,
RFAL_TXRX_FLAGS_DEFAULT,
RFAL_ST25TB_FWT);
/* Check for valid UID Response */
if((ret == ERR_NONE) && (rxLen != RFAL_ST25TB_UID_LEN)) {
return ERR_PROTO;
}
return ret;
}
/*******************************************************************************/
ReturnCode rfalSt25tbPollerCollisionResolution(
uint8_t devLimit,
rfalSt25tbListenDevice* st25tbDevList,
uint8_t* devCnt) {
uint8_t chipId;
ReturnCode ret;
bool detected; /* collision or device was detected */
if((st25tbDevList == NULL) || (devCnt == NULL) || (devLimit == 0U)) {
return ERR_PARAM;
}
*devCnt = 0;
/* Step 1: Send Initiate */
ret = rfalSt25tbPollerInitiate(&chipId);
if(ret == ERR_NONE) {
/* If only 1 answer is detected */
st25tbDevList[*devCnt].chipID = chipId;
st25tbDevList[*devCnt].isDeselected = false;
/* Retrieve its UID and keep it Selected*/
ret = rfalSt25tbPollerSelect(chipId);
if(ERR_NONE == ret) {
ret = rfalSt25tbPollerGetUID(&st25tbDevList[*devCnt].UID);
}
if(ERR_NONE == ret) {
(*devCnt)++;
}
}
/* Always proceed to Pcall16 anticollision as phase differences of tags can lead to no tag recognized, even if there is one */
if(*devCnt < devLimit) {
/* Multiple device responses */
do {
detected = rfalSt25tbPollerDoCollisionResolution(devLimit, st25tbDevList, devCnt);
} while((detected == true) && (*devCnt < devLimit));
}
return ERR_NONE;
}
/*******************************************************************************/
ReturnCode rfalSt25tbPollerReadBlock(uint8_t blockAddress, rfalSt25tbBlock* blockData) {
ReturnCode ret;
uint16_t rxLen;
rfalSt25tbReadBlockReq readBlockReq;
/* Compute Read Block Request */
readBlockReq.cmd = RFAL_ST25TB_READ_BLOCK_CMD;
readBlockReq.address = blockAddress;
/* Send Read Block Request */
ret = rfalTransceiveBlockingTxRx(
(uint8_t*)&readBlockReq,
sizeof(rfalSt25tbReadBlockReq),
(uint8_t*)blockData,
sizeof(rfalSt25tbBlock),
&rxLen,
RFAL_TXRX_FLAGS_DEFAULT,
RFAL_ST25TB_FWT);
/* Check for valid UID Response */
if((ret == ERR_NONE) && (rxLen != RFAL_ST25TB_BLOCK_LEN)) {
return ERR_PROTO;
}
return ret;
}
/*******************************************************************************/
ReturnCode rfalSt25tbPollerWriteBlock(uint8_t blockAddress, const rfalSt25tbBlock* blockData) {
ReturnCode ret;
uint16_t rxLen;
rfalSt25tbWriteBlockReq writeBlockReq;
rfalSt25tbBlock tmpBlockData;
/* Compute Write Block Request */
writeBlockReq.cmd = RFAL_ST25TB_WRITE_BLOCK_CMD;
writeBlockReq.address = blockAddress;
ST_MEMCPY(&writeBlockReq.data, blockData, RFAL_ST25TB_BLOCK_LEN);
/* Send Write Block Request */
ret = rfalTransceiveBlockingTxRx(
(uint8_t*)&writeBlockReq,
sizeof(rfalSt25tbWriteBlockReq),
tmpBlockData,
RFAL_ST25TB_BLOCK_LEN,
&rxLen,
RFAL_TXRX_FLAGS_DEFAULT,
(RFAL_ST25TB_FWT + RFAL_ST25TB_TW));
/* Check if there was any error besides timeout */
if(ret != ERR_TIMEOUT) {
/* Check if an unexpected answer was received */
if(ret == ERR_NONE) {
return ERR_PROTO;
}
/* Check whether a transmission error occurred */
if((ret != ERR_CRC) && (ret != ERR_FRAMING) && (ret != ERR_NOMEM) &&
(ret != ERR_RF_COLLISION)) {
return ret;
}
/* If a transmission error occurred (maybe noise while commiting data) wait maximum programming time and verify data afterwards */
rfalSetGT((RFAL_ST25TB_FWT + RFAL_ST25TB_TW));
rfalFieldOnAndStartGT();
}
ret = rfalSt25tbPollerReadBlock(blockAddress, &tmpBlockData);
if(ret == ERR_NONE) {
if(ST_BYTECMP(&tmpBlockData, blockData, RFAL_ST25TB_BLOCK_LEN) == 0) {
return ERR_NONE;
}
return ERR_PROTO;
}
return ret;
}
/*******************************************************************************/
ReturnCode rfalSt25tbPollerCompletion(void) {
uint8_t completionReq;
/* Compute Completion Request */
completionReq = RFAL_ST25TB_COMPLETION_CMD;
/* Send Completion Request, no response is expected */
return rfalTransceiveBlockingTxRx(
(uint8_t*)&completionReq,
RFAL_ST25TB_CMD_LEN,
NULL,
0,
NULL,
RFAL_TXRX_FLAGS_DEFAULT,
RFAL_ST25TB_FWT);
}
/*******************************************************************************/
ReturnCode rfalSt25tbPollerResetToInventory(void) {
uint8_t resetInvReq;
/* Compute Completion Request */
resetInvReq = RFAL_ST25TB_RESET_INV_CMD;
/* Send Completion Request, no response is expected */
return rfalTransceiveBlockingTxRx(
(uint8_t*)&resetInvReq,
RFAL_ST25TB_CMD_LEN,
NULL,
0,
NULL,
RFAL_TXRX_FLAGS_DEFAULT,
RFAL_ST25TB_FWT);
}
#endif /* RFAL_FEATURE_ST25TB */
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