Header for the driver for the CAN module. More...

#include "general.h"
#include "can_cfg.h"

Include dependency graph for can.h:

This graph shows which files directly or indirectly include this file:

Data Structures
struct	CAN_STATE_s

Macros
#define	CAN_NR_OF_TX_MESSAGE_BOX (32U)

#define	CAN_TICK_MS (10U)

Functions
STD_RETURN_TYPE_e	CAN_DataSend (canBASE_t pNode, uint32_t id, uint8 pData)
	Sends over CAN the data passed in parameters. This function goes over the messageboxes and marks the ones that should be sent. More...

void	CAN_MainFunction (void)
	Calls the functions to drive the CAN interface. Makes the CAN timing checks and sends the periodic messages. More...

void	CAN_ReadRxBuffer (void)
	Checks the data received per CAN. A receive buffer is used because CAN frames are received in an interrupt routine. The TMS570LC4357 does not allow nested interrupts, so interrupts are deactivated during receive. Calls to the database do not work when interrupts are disabled. Receive callbacks are made within this function: as it is not called during an interrupt routine, calls to the database can be made. More...

void	CAN_Initialize (void)
	Enables the CAN transceiver.. This function sets th pins to enable the CAN transceiver. It must be called before using the CAN interface. More...

void	CAN_EnablePeriodic (bool command)
	Enables periodic sending per CAN. This is used to prevent sending uninitialized data per CAN (e.g., before the first LTC measurement cycle was completed). More...

bool	CAN_IsCurrentSensorPresent (uint8_t stringNumber)
	set flag for presence of current sensor. More...

bool	CAN_IsCurrentSensorCcPresent (uint8_t stringNumber)
	get flag if CC message from current sensor is received. More...

bool	CAN_IsCurrentSensorEcPresent (uint8_t stringNumber)
	get flag if EC message from current sensor is received More...

STD_RETURN_TYPE_e	CAN_TransmitBootMessage (void)
	Transmit startup boot message. More...

STD_RETURN_TYPE_e	CAN_TransmitDieId (void)
	Transmit chip id. More...

Detailed Description

Header for the driver for the CAN module.

Copyright: © 2010 - 2022, Fraunhofer-Gesellschaft zur Foerderung der angewandten Forschung e.V. All rights reserved.

SPDX-License-Identifier: BSD-3-Clause

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

We kindly request you to use one or more of the following phrases to refer to foxBMS in your hardware, software, documentation or advertising materials:

″This product uses parts of foxBMS®″
″This product includes parts of foxBMS®″
″This product is derived from foxBMS®″

Author: foxBMS Team

Date: 2019-12-04 (date of creation)

Updated: 2022-05-30 (date of last update)

Version: v1.3.0

Prefix: CAN

Provides the interfaces for initialization, receive and transmit handling

Definition in file can.h.

Macro Definition Documentation

◆ CAN_NR_OF_TX_MESSAGE_BOX

#define CAN_NR_OF_TX_MESSAGE_BOX (32U)

Half of the 64 messageboxes are defined for TX This is used to determined in the CAN interrupt routine if TX or RX case

Definition at line 71 of file can.h.

◆ CAN_TICK_MS

#define CAN_TICK_MS (10U)

Task time slot where the CAN TX function is called. Repetition time of periodic CAN messages must be multiple of this (e.g., 1u, 10u or 100u)

Definition at line 76 of file can.h.

Function Documentation

◆ CAN_DataSend()

STD_RETURN_TYPE_e CAN_DataSend	(	canBASE_t *	pNode,
		uint32_t	id,
		uint8 *	pData
	)

Sends over CAN the data passed in parameters. This function goes over the messageboxes and marks the ones that should be sent.

Parameters

[in,out]	pNode	CAN interface to use
[in]	id	ID of message to send
[out]	pData	data to send (8 bytes)

Returns: STD_OK if a message box was free to send, STD_NOT_OK otherwise

Parse all TX message boxes until we find a free one, then use it to send the CAN message. In the HAL, message box numbers start from 1, not 0.

Definition at line 206 of file can.c.

◆ CAN_EnablePeriodic()

void CAN_EnablePeriodic ( bool command )

Enables periodic sending per CAN. This is used to prevent sending uninitialized data per CAN (e.g., before the first LTC measurement cycle was completed).

Definition at line 367 of file can.c.

◆ CAN_Initialize()

void CAN_Initialize ( void )

Enables the CAN transceiver.. This function sets th pins to enable the CAN transceiver. It must be called before using the CAN interface.

Definition at line 202 of file can.c.

Here is the call graph for this function:

◆ CAN_IsCurrentSensorCcPresent()

bool CAN_IsCurrentSensorCcPresent ( uint8_t stringNumber )

get flag if CC message from current sensor is received.

Parameters

stringNumber addressed string

Returns: true if CC message is being received, false otherwise

Definition at line 418 of file can.c.

◆ CAN_IsCurrentSensorEcPresent()

bool CAN_IsCurrentSensorEcPresent ( uint8_t stringNumber )

get flag if EC message from current sensor is received

Parameters

stringNumber addressed string

Returns: true if EC message is being received, false otherwise

Definition at line 423 of file can.c.

◆ CAN_IsCurrentSensorPresent()

bool CAN_IsCurrentSensorPresent ( uint8_t stringNumber )

set flag for presence of current sensor.

Returns: retval true if a current sensor is present, false otherwise

Definition at line 413 of file can.c.

◆ CAN_MainFunction()

void CAN_MainFunction ( void )

Calls the functions to drive the CAN interface. Makes the CAN timing checks and sends the periodic messages.

Definition at line 234 of file can.c.

Here is the call graph for this function:

◆ CAN_ReadRxBuffer()

void CAN_ReadRxBuffer ( void )

Checks the data received per CAN. A receive buffer is used because CAN frames are received in an interrupt routine. The TMS570LC4357 does not allow nested interrupts, so interrupts are deactivated during receive. Calls to the database do not work when interrupts are disabled. Receive callbacks are made within this function: as it is not called during an interrupt routine, calls to the database can be made.

Definition at line 343 of file can.c.

Here is the call graph for this function:

◆ CAN_TransmitBootMessage()

STD_RETURN_TYPE_e CAN_TransmitBootMessage ( void )

Transmit startup boot message.

Returns: STD_OK if transmission successful, otherwise STD_NOT_OK

Definition at line 489 of file can.c.

Here is the call graph for this function:

◆ CAN_TransmitDieId()

STD_RETURN_TYPE_e CAN_TransmitDieId ( void )

Transmit chip id.

Returns: STD_OK if transmission successful, otherwise STD_NOT_OK

Definition at line 537 of file can.c.

Here is the call graph for this function:

Data Structures

Macros

Functions

Detailed Description

Macro Definition Documentation

◆ CAN_NR_OF_TX_MESSAGE_BOX

◆ CAN_TICK_MS

Function Documentation

◆ CAN_DataSend()

◆ CAN_EnablePeriodic()

◆ CAN_Initialize()

◆ CAN_IsCurrentSensorCcPresent()

◆ CAN_IsCurrentSensorEcPresent()

◆ CAN_IsCurrentSensorPresent()

◆ CAN_MainFunction()

◆ CAN_ReadRxBuffer()

◆ CAN_TransmitBootMessage()

◆ CAN_TransmitDieId()