AN1105 datasheet(20/100 Pages) STMICROELECTRONICS

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ST7 pCAN PERIPHERAL DRIVER

If CTRUE, the data can be modified. Take care to check and/or initialize it before passing

a buffer to the driver.

Init_Data -type variables

typedef struct {

u8 brpr_init;

u8 btr_init;

u8 fhr1_init;

u8 flr1_init;

u8 mhr1_init;

u8 mlr1_init;

u8 fhr0_init;

u8 flr0_init;

u8 mhr0_init;

u8 mlr0_init;

u8 }Init_Data;

This structure contains the value of registers that can be reinitialized when switching on the

cell after a passage in Standby state (see Section 2.1.5.2 "Functions", CAN_Switch_On).

It is used for hardware initialization.

–

brpr_init: value of the CANBRPR register (set length of a CAN time quantum in number of

CPU clock ticks). See “Bit timing” on page 9.

–

btr_init: value of the CANBTR register (length of both time segments 1 and 2 in number of

time quanta). See “Bit timing” on page 9.

–

fhr1_init: value of Filter 1 High Register.

–

flr1_init: value of the Filter1 Low Register.

–

mhr1_init: value of the Mask 1 High Register.

–

mlr1_init: value of the Mask 1 Low Register.

–

fhr0_init: value of Filter 0High Register.

–

flr0_init: value of the Filter 0 Low Register.

–

mhr0_init: value of the Mask 0High Register.

–

mlr0_init: value of the Mask 0Low Register.

Enum -type variables

The names of the variables are in principle self-explanatory.

typedef enum

{DLC0,DLC1,DLC2,DLC3,DLC4,DLC5,DLC6,DLC7,DLC8,REMOTE_FRAME}CAN_Data_Size;

Possible values of the CAN_Message data_size field (See “CAN_Buffer -type variables” on

page 19)

typedef enum

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