A2L file parsing based on CAN bus (3)

Preface

In the second part A2L In the article of file parsing , This paper introduces the definition of common interfaces . In actual use , Define parameters . The following describes the specific configuration and definition .

MOD_COMMON

This keyword is used to specify the general description data of the module , Then take it as the standard of this module .

/begin MOD_COMMON "This is MOD_COMMON" 
 BYTE_ORDER MSB_LAST
      ALIGNMENT_BYTE 1
      ALIGNMENT_WORD 2
      ALIGNMENT_LONG 4
      ALIGNMENT_FLOAT32_IEEE 4
      ALIGNMENT_FLOAT64_IEEE 8
      ALIGNMENT_INT64 8 
/end MOD_COMMON 

ALIGNMENT_BYTE: Declare BYTE Alignment mode . If the parameter is missing , The alignment is 1. Others in the same way .

BYTE_ORDER： Byte order ,MSB_LAST=Intel, The default is Intel

MOD_PAR

MOD_PAR Keywords are used to describe the management data to be configured for the device . In addition to comments , All parameters are optional . It's not used for the time being .

XCP data

stay A2ML In the definition of XCP structure ：

"XCP" struct {
          taggedstruct Common_Parameters;  /* default parameters */
          taggedstruct {
            block "XCP_ON_CAN" struct {
              struct CAN_Parameters;  /* specific for CAN */
              taggedstruct Common_Parameters;  /* overruling of default */
            };
    
          };  /* transport layer parameters*/
        };
    

Common_Parameters Definition

/*********************** start of Common Parameters ***************************/ 
taggedstruct Common_Parameters { 
 block "PROTOCOL_LAYER" struct Protocol_Layer; 
 block "SEGMENT" struct Segment; 
 block "DAQ" struct Daq; 
 block "PAG" struct Pag; 
 block "PGM" struct Pgm; 
 block "DAQ_EVENT" taggedunion Daq_Event; 
}; /******************** end of Common Parameters *****************************/

Defines the interface introduced in Section 2 .

IF_DATA Definition XCP

PROTOCOL_LAYER

 /begin IF_DATA XCP
      /begin PROTOCOL_LAYER
        0x0101
        0x07D0
        0x2710
        0x07D0
        0x07D0
        0x07D0
        0x07D0
        0x00
        0x08
        0x08
        BYTE_ORDER_MSB_LAST
        ADDRESS_GRANULARITY_BYTE
        OPTIONAL_CMD SET_MTA
        OPTIONAL_CMD UPLOAD
        OPTIONAL_CMD SHORT_UPLOAD
        OPTIONAL_CMD TRANSPORT_LAYER_CMD
        OPTIONAL_CMD DOWNLOAD
        OPTIONAL_CMD DOWNLOAD_NEXT
        OPTIONAL_CMD SHORT_DOWNLOAD
        OPTIONAL_CMD SET_CAL_PAGE
        OPTIONAL_CMD GET_CAL_PAGE
        OPTIONAL_CMD GET_PAG_PROCESSOR_INFO
        OPTIONAL_CMD GET_PAGE_INFO
        OPTIONAL_CMD SET_DAQ_PTR
        OPTIONAL_CMD WRITE_DAQ
        OPTIONAL_CMD SET_DAQ_LIST_MODE
        OPTIONAL_CMD GET_DAQ_LIST_MODE
        OPTIONAL_CMD START_STOP_DAQ_LIST
        OPTIONAL_CMD START_STOP_SYNCH
        OPTIONAL_CMD GET_DAQ_PROCESSOR_INFO
        OPTIONAL_CMD GET_DAQ_EVENT_INFO
        OPTIONAL_CMD FREE_DAQ
        OPTIONAL_CMD ALLOC_DAQ
        OPTIONAL_CMD ALLOC_ODT
        OPTIONAL_CMD ALLOC_ODT_ENTRY
        COMMUNICATION_MODE_SUPPORTED BLOCK
          SLAVE
      /end PROTOCOL_LAYER

The first number is the version number , The last seven are T1-T7

The next two are MAX_CTO and MAX_DTO

BYTE_ORDER_MSB_LAST Express Intel Format

The following is the defined command , Because of this XCP of no avail Programming , So related to programming CMD Not within the definition .

COMMUNICATION_MODE_SUPPORTED Define slave

DAQ

/begin DAQ
        DYNAMIC
        0x00
        0x2D
        0x00
        OPTIMISATION_TYPE_DEFAULT
        ADDRESS_EXTENSION_FREE
        IDENTIFICATION_FIELD_TYPE_ABSOLUTE
        GRANULARITY_ODT_ENTRY_SIZE_DAQ_BYTE
        0x07
        OVERLOAD_INDICATION_PID
        /begin STIM
          GRANULARITY_ODT_ENTRY_SIZE_STIM_BYTE
          0x07
        /end STIM

at present XCP Only support DYNAMIC DAQ

MAX_DAQ by 0. Because it's dynamic DAQ
MAX_EVENT_CHANNEL by 0x2D, According to the fact EVENT Number decides , The configuration is larger than the actual EVENT Count .

MIN_DAQ by 0. Because it's dynamic DAQ

OPTIMISATION_TYPE; This default

ADDRESS_EXTENSION：free

I don't know where the configuration is . There are displays in the calibration software that can be configured .

IDENTIFICATION_FIELD_TYPE_ABSOLUTE, Configure

OVERLOAD_INDICATION_PID, I don't know where the configuration is . There are displays in the calibration software that can be configured .

MAX_ODT_ENTRY_SIZE_DAQ：0x07


because TIMESTAMP The choice is NO_TIME_STAMP, So timestamp is not available

EVENT

With one of them event For example ：

/begin EVENT
          "Dlt_EvtMsg"
          "Dlt_EvtM"
          0x1E
          DAQ
          0x01
          0x00
          0x06
          0x00
        /end EVENT

Event name ：Dlt_EvtMsg

Short name ：Dlt_EvtM

Event number ：0x1E

Data transfer type ：DAQ

Maximum DAQ LIST Number ：1

Event cycle ：0

Event time unit ：6,“UNIT_1NS” = 0,
“UNIT_10NS” = 1,
“UNIT_100NS” = 2,
“UNIT_1US” = 3,
“UNIT_10US” = 4,
“UNIT_100US” = 5,
“UNIT_1MS” = 6,
“UNIT_10MS” = 7,
“UNIT_100MS” = 8,
“UNIT_1S” = 9,
“UNIT_1PS” = 10,
“UNIT_10PS” = 11,
“UNIT_100PS” = 12

Event priority ：0

XCP_ON_CAN

CAN_Parameters

    0x0102
    CAN_ID_MASTER 0x0xxx
    CAN_ID_SLAVE 0x0xxx
    BAUDRATE 0x07A120
    SAMPLE_POINT 0x50
    SAMPLE_RATE SINGLE
    BTL_CYCLES 0x0A
    SJW 0x01
    MAX_DLC_REQUIRED

XCP on CAN version Version number :0x0102

CAN_ID_MASTER: host ID-0x0xxx

CAN_ID_SLAVE： Slave ID-0x0xxx

BAUDRATE：500K,0x07A120

SAMPLE_POINT: Sampling point 80

SAMPLE_RATE: Sampling rate SINGLE

BTL_CYCLES： Every bit Of slot Count ,10

SJW： Length of synchronization segment ,1

MAX_DLC_REQUIRED： Master slave DLC Always be 8

PROTOCOL_LAYER Consistent with the previous settings

CAN The relevant information is in DBC or Arxml Set in .

summary

thus ,A2L The contents of the document are introduced . About XCP Protocol and code implementation , Continue to study later when you are free .

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