UM0459 datasheet(11/29 Pages) STMICROELECTRONICS

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UM0459

Controller area network (CAN) routines

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2.2.2

CAN_EnterInitMode function

2.2.3

CAN_LeaveInitMode function

Table 5.

CAN_EnterInitMode function description

Function

CAN_EnterInitMode

Prototype

void CAN_EnterInitMode(CAN_TypeDef* CAN, u16 Mask)

Behavior description

Switches the CAN into initialization mode. This function must be used in

conjunction with CAN_LeaveInitMode().

This function sets the INIT of the CAN cell and resets the CAN status

Input parameter 1

CAN: pointer to the CAN1 or CAN2 CAN cell.

Input parameter 2

Mask: any binary value resulting from the following (Refer to the CAN

control register definition):

– CAN_CR_EIE: CAN Error Interrupt Enable

– CAN_CR_SIE: CAN Status Interrupt Enable

– CAN_CR_IE: CAN Interrupt Enable

– CAN_CR_ DAR: CAN Disable Automatic retransmission

– CAN_CR_CCE: CAN Configuration Enable

– CAN_CR_TEST: Enable CAN test mode

Output parameter

None

Return value

None

Required preconditions

None

Called functions

None

Table 6.

CAN_LeaveInitMode function description

Function

CAN_LeaveInitMode

Prototype

void CAN_LeaveInitMode(CAN_TypeDef* CAN)

Behavior description

Leaves initialization mode (switch into normal mode) by clearing INIT

and CCE bits in the CAN control register.

This function must be used in conjunction with CAN_EnterInitMode().

Input parameter

CAN: pointer on the CAN cell CAN1 or CAN2

Output parameter

None

Return value

None

Required preconditions

None

Called functions

None

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