Altera SoCAL  16.0
The Altera SoC Abstraction Layer (SoCAL) API Reference Manual
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Register : IF1 Data B Register - IF1DB

Description

The data bytes of CAN messages are stored in the IF1/2 registers in the following order. In a CAN Data Frame, Data(0) is the first, Data(7) is the last byte to be transmitted or received. In CAN's serial bit stream, the MSB of each byte will be transmitted first.

Register Layout

Bits Access Reset Description
[7:0] RW 0x0 Data 0
[15:8] RW 0x0 Data 1
[23:16] RW 0x0 Data 2
[31:24] RW 0x0 Data 3

Field : Data 0 - Data4

5th data byte of a CAN Data Frame

Field Access Macros:

#define ALT_CAN_MSGIF_IF1DB_DATA4_LSB   0
 
#define ALT_CAN_MSGIF_IF1DB_DATA4_MSB   7
 
#define ALT_CAN_MSGIF_IF1DB_DATA4_WIDTH   8
 
#define ALT_CAN_MSGIF_IF1DB_DATA4_SET_MSK   0x000000ff
 
#define ALT_CAN_MSGIF_IF1DB_DATA4_CLR_MSK   0xffffff00
 
#define ALT_CAN_MSGIF_IF1DB_DATA4_RESET   0x0
 
#define ALT_CAN_MSGIF_IF1DB_DATA4_GET(value)   (((value) & 0x000000ff) >> 0)
 
#define ALT_CAN_MSGIF_IF1DB_DATA4_SET(value)   (((value) << 0) & 0x000000ff)
 

Field : Data 1 - Data5

6th data byte of a CAN Data Frame

Field Access Macros:

#define ALT_CAN_MSGIF_IF1DB_DATA5_LSB   8
 
#define ALT_CAN_MSGIF_IF1DB_DATA5_MSB   15
 
#define ALT_CAN_MSGIF_IF1DB_DATA5_WIDTH   8
 
#define ALT_CAN_MSGIF_IF1DB_DATA5_SET_MSK   0x0000ff00
 
#define ALT_CAN_MSGIF_IF1DB_DATA5_CLR_MSK   0xffff00ff
 
#define ALT_CAN_MSGIF_IF1DB_DATA5_RESET   0x0
 
#define ALT_CAN_MSGIF_IF1DB_DATA5_GET(value)   (((value) & 0x0000ff00) >> 8)
 
#define ALT_CAN_MSGIF_IF1DB_DATA5_SET(value)   (((value) << 8) & 0x0000ff00)
 

Field : Data 2 - Data6

7th data byte of a CAN Data Frame

Field Access Macros:

#define ALT_CAN_MSGIF_IF1DB_DATA6_LSB   16
 
#define ALT_CAN_MSGIF_IF1DB_DATA6_MSB   23
 
#define ALT_CAN_MSGIF_IF1DB_DATA6_WIDTH   8
 
#define ALT_CAN_MSGIF_IF1DB_DATA6_SET_MSK   0x00ff0000
 
#define ALT_CAN_MSGIF_IF1DB_DATA6_CLR_MSK   0xff00ffff
 
#define ALT_CAN_MSGIF_IF1DB_DATA6_RESET   0x0
 
#define ALT_CAN_MSGIF_IF1DB_DATA6_GET(value)   (((value) & 0x00ff0000) >> 16)
 
#define ALT_CAN_MSGIF_IF1DB_DATA6_SET(value)   (((value) << 16) & 0x00ff0000)
 

Field : Data 3 - Data7

8th data byte of a CAN Data Frame

Field Access Macros:

#define ALT_CAN_MSGIF_IF1DB_DATA7_LSB   24
 
#define ALT_CAN_MSGIF_IF1DB_DATA7_MSB   31
 
#define ALT_CAN_MSGIF_IF1DB_DATA7_WIDTH   8
 
#define ALT_CAN_MSGIF_IF1DB_DATA7_SET_MSK   0xff000000
 
#define ALT_CAN_MSGIF_IF1DB_DATA7_CLR_MSK   0x00ffffff
 
#define ALT_CAN_MSGIF_IF1DB_DATA7_RESET   0x0
 
#define ALT_CAN_MSGIF_IF1DB_DATA7_GET(value)   (((value) & 0xff000000) >> 24)
 
#define ALT_CAN_MSGIF_IF1DB_DATA7_SET(value)   (((value) << 24) & 0xff000000)
 

Data Structures

struct  ALT_CAN_MSGIF_IF1DB_s
 

Macros

#define ALT_CAN_MSGIF_IF1DB_OFST   0x14
 
#define ALT_CAN_MSGIF_IF1DB_ADDR(base)   ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_CAN_MSGIF_IF1DB_OFST))
 

Typedefs

typedef struct
ALT_CAN_MSGIF_IF1DB_s 
ALT_CAN_MSGIF_IF1DB_t
 

Data Structure Documentation

struct ALT_CAN_MSGIF_IF1DB_s

WARNING: The C register and register group struct declarations are provided for convenience and illustrative purposes. They should, however, be used with caution as the C language standard provides no guarantees about the alignment or atomicity of device memory accesses. The recommended practice for writing hardware drivers is to use the SoCAL access macros and alt_read_word() and alt_write_word() functions.

The struct declaration for register ALT_CAN_MSGIF_IF1DB.

Data Fields
uint32_t Data4: 8 Data 0
uint32_t Data5: 8 Data 1
uint32_t Data6: 8 Data 2
uint32_t Data7: 8 Data 3

Macro Definitions

#define ALT_CAN_MSGIF_IF1DB_DATA4_LSB   0

The Least Significant Bit (LSB) position of the ALT_CAN_MSGIF_IF1DB_DATA4 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA4_MSB   7

The Most Significant Bit (MSB) position of the ALT_CAN_MSGIF_IF1DB_DATA4 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA4_WIDTH   8

The width in bits of the ALT_CAN_MSGIF_IF1DB_DATA4 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA4_SET_MSK   0x000000ff

The mask used to set the ALT_CAN_MSGIF_IF1DB_DATA4 register field value.

#define ALT_CAN_MSGIF_IF1DB_DATA4_CLR_MSK   0xffffff00

The mask used to clear the ALT_CAN_MSGIF_IF1DB_DATA4 register field value.

#define ALT_CAN_MSGIF_IF1DB_DATA4_RESET   0x0

The reset value of the ALT_CAN_MSGIF_IF1DB_DATA4 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA4_GET (   value)    (((value) & 0x000000ff) >> 0)

Extracts the ALT_CAN_MSGIF_IF1DB_DATA4 field value from a register.

#define ALT_CAN_MSGIF_IF1DB_DATA4_SET (   value)    (((value) << 0) & 0x000000ff)

Produces a ALT_CAN_MSGIF_IF1DB_DATA4 register field value suitable for setting the register.

#define ALT_CAN_MSGIF_IF1DB_DATA5_LSB   8

The Least Significant Bit (LSB) position of the ALT_CAN_MSGIF_IF1DB_DATA5 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA5_MSB   15

The Most Significant Bit (MSB) position of the ALT_CAN_MSGIF_IF1DB_DATA5 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA5_WIDTH   8

The width in bits of the ALT_CAN_MSGIF_IF1DB_DATA5 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA5_SET_MSK   0x0000ff00

The mask used to set the ALT_CAN_MSGIF_IF1DB_DATA5 register field value.

#define ALT_CAN_MSGIF_IF1DB_DATA5_CLR_MSK   0xffff00ff

The mask used to clear the ALT_CAN_MSGIF_IF1DB_DATA5 register field value.

#define ALT_CAN_MSGIF_IF1DB_DATA5_RESET   0x0

The reset value of the ALT_CAN_MSGIF_IF1DB_DATA5 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA5_GET (   value)    (((value) & 0x0000ff00) >> 8)

Extracts the ALT_CAN_MSGIF_IF1DB_DATA5 field value from a register.

#define ALT_CAN_MSGIF_IF1DB_DATA5_SET (   value)    (((value) << 8) & 0x0000ff00)

Produces a ALT_CAN_MSGIF_IF1DB_DATA5 register field value suitable for setting the register.

#define ALT_CAN_MSGIF_IF1DB_DATA6_LSB   16

The Least Significant Bit (LSB) position of the ALT_CAN_MSGIF_IF1DB_DATA6 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA6_MSB   23

The Most Significant Bit (MSB) position of the ALT_CAN_MSGIF_IF1DB_DATA6 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA6_WIDTH   8

The width in bits of the ALT_CAN_MSGIF_IF1DB_DATA6 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA6_SET_MSK   0x00ff0000

The mask used to set the ALT_CAN_MSGIF_IF1DB_DATA6 register field value.

#define ALT_CAN_MSGIF_IF1DB_DATA6_CLR_MSK   0xff00ffff

The mask used to clear the ALT_CAN_MSGIF_IF1DB_DATA6 register field value.

#define ALT_CAN_MSGIF_IF1DB_DATA6_RESET   0x0

The reset value of the ALT_CAN_MSGIF_IF1DB_DATA6 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA6_GET (   value)    (((value) & 0x00ff0000) >> 16)

Extracts the ALT_CAN_MSGIF_IF1DB_DATA6 field value from a register.

#define ALT_CAN_MSGIF_IF1DB_DATA6_SET (   value)    (((value) << 16) & 0x00ff0000)

Produces a ALT_CAN_MSGIF_IF1DB_DATA6 register field value suitable for setting the register.

#define ALT_CAN_MSGIF_IF1DB_DATA7_LSB   24

The Least Significant Bit (LSB) position of the ALT_CAN_MSGIF_IF1DB_DATA7 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA7_MSB   31

The Most Significant Bit (MSB) position of the ALT_CAN_MSGIF_IF1DB_DATA7 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA7_WIDTH   8

The width in bits of the ALT_CAN_MSGIF_IF1DB_DATA7 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA7_SET_MSK   0xff000000

The mask used to set the ALT_CAN_MSGIF_IF1DB_DATA7 register field value.

#define ALT_CAN_MSGIF_IF1DB_DATA7_CLR_MSK   0x00ffffff

The mask used to clear the ALT_CAN_MSGIF_IF1DB_DATA7 register field value.

#define ALT_CAN_MSGIF_IF1DB_DATA7_RESET   0x0

The reset value of the ALT_CAN_MSGIF_IF1DB_DATA7 register field.

#define ALT_CAN_MSGIF_IF1DB_DATA7_GET (   value)    (((value) & 0xff000000) >> 24)

Extracts the ALT_CAN_MSGIF_IF1DB_DATA7 field value from a register.

#define ALT_CAN_MSGIF_IF1DB_DATA7_SET (   value)    (((value) << 24) & 0xff000000)

Produces a ALT_CAN_MSGIF_IF1DB_DATA7 register field value suitable for setting the register.

#define ALT_CAN_MSGIF_IF1DB_OFST   0x14

The byte offset of the ALT_CAN_MSGIF_IF1DB register from the beginning of the component.

#define ALT_CAN_MSGIF_IF1DB_ADDR (   base)    ALT_CAST(void *, (ALT_CAST(char *, (base)) + ALT_CAN_MSGIF_IF1DB_OFST))

The address of the ALT_CAN_MSGIF_IF1DB register.

Typedef Documentation

The typedef declaration for register ALT_CAN_MSGIF_IF1DB.