Functions for accessing M24SR device.
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lib_M24SR
by Enrico Gregoratto
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DrvM24SR_Private_Functions
static uint16_t M24SR_UpdateCrc (uint8_t ch, uint16_t *lpwCrc) This function updates the CRC. static uint16_t M24SR_ComputeCrc (uc8 *Data, uint8_t Length) This function returns the CRC 16. static uint16_t M24SR_IsCorrectCRC16Residue (uc8 *DataIn, uc8 Length) This function computes the CRC16 residue as defined by CRC ISO/IEC 13239. static void M24SR_InitStructure (void) Initialize the command and response structure. static void M24SR_BuildIBlockCommand (uc16 CommandStructure, C_APDU Command, uint16_t *NbByte, uint8_t *pCommand) This functions creates an I block command according to the structures CommandStructure and Command. static int8_t IsIBlock (uc8 *pBuffer) This function return M24SR_STATUS_SUCCESS if the pBuffer is an I-block. static int8_t IsRBlock (uc8 *pBuffer) This function return M24SR_STATUS_SUCCESS if the pBuffer is an R-block. static int8_t IsSBlock (uc8 *pBuffer) This function return M24SR_STATUS_SUCCESS if the pBuffer is an s-block. static uint16_t M24SR_FWTExtension (uint8_t FWTbyte) This function sends the FWT extension command (S-Block format)
Function Documentation
static int8_t IsIBlock
(
uc8 *
pBuffer )
[static]
This function return M24SR_STATUS_SUCCESS if the pBuffer is an I-block.
Parameters:
pBuffer : pointer of the data
Return values:
M24SR_STATUS_SUCCESS : the data is a I-Block M24SR_ERROR_DEFAULT : the data is not a I-Block
Definition at line 258 of file m24sr.c .
static int8_t IsRBlock
(
uc8 *
pBuffer )
[static]
This function return M24SR_STATUS_SUCCESS if the pBuffer is an R-block.
Parameters:
pBuffer : pointer of the data
Return values:
M24SR_STATUS_SUCCESS : the data is a R-Block M24SR_ERROR_DEFAULT : the data is not a R-Block
Definition at line 278 of file m24sr.c .
static int8_t IsSBlock
(
uc8 *
pBuffer )
[static]
This function return M24SR_STATUS_SUCCESS if the pBuffer is an s-block.
Parameters:
pBuffer : pointer of the data
Return values:
M24SR_STATUS_SUCCESS : the data is a S-Block M24SR_ERROR_DEFAULT : the data is not a S-Block
Definition at line 299 of file m24sr.c .
static void M24SR_BuildIBlockCommand
(
uc16
CommandStructure ,
C_APDU
Command ,
uint16_t *
NbByte ,
uint8_t *
pCommand
)
[static]
This functions creates an I block command according to the structures CommandStructure and Command.
Parameters:
Command : structue which contains the field of the different parameter CommandStructure : structure that contain the structure of the command (if the different field are presnet or not NbByte : number of byte of the command pCommand : pointer of the command created
Definition at line 181 of file m24sr.c .
static uint16_t M24SR_ComputeCrc
(
uc8 *
Data ,
uint8_t
Length
)
[static]
This function returns the CRC 16.
Parameters:
Data : pointer on the data used to compute the CRC16 Length : number of byte of the data
Return values:
Definition at line 96 of file m24sr.c .
static uint16_t M24SR_FWTExtension
(
uint8_t
FWTbyte )
[static]
This function sends the FWT extension command (S-Block format)
Parameters:
Return values:
Status (SW1&SW2) : Status of the operation to complete. M24SR_ERROR_I2CTIMEOUT : The I2C timeout occured.
Definition at line 319 of file m24sr.c .
static void M24SR_InitStructure
(
void
)
[static]
Initialize the command and response structure.
Parameters:
Return values:
Definition at line 154 of file m24sr.c .
static uint16_t M24SR_IsCorrectCRC16Residue
(
uc8 *
DataIn ,
uc8
Length
)
[static]
This function computes the CRC16 residue as defined by CRC ISO/IEC 13239.
Parameters:
DataIn : input to data Length : Number of bits of DataIn
Return values:
Status (SW1&SW2) : CRC16 residue is correct M24SR_ERROR_CRC : CRC16 residue is false
Definition at line 119 of file m24sr.c .
static uint16_t M24SR_UpdateCrc
(
uint8_t
ch ,
uint16_t *
lpwCrc
)
[static]
This function updates the CRC.
Parameters:
Return values:
Definition at line 81 of file m24sr.c .
ST Americas mbed Team
Enrico Gregoratto
1.7.2