Can Frames Transmission Functions - ST STM32F31xx User Manual

Controller area network (bxCAN)
Return values
Notes
4.2.9

CAN Frames Transmission functions

4.2.9.1 CAN_Transmit
Function Name
Function Description
Parameters
Return values
Notes
4.2.9.2 CAN_TransmitStatus
Function Name
Function Description
Parameters
Return values
Notes
118/584
ENABLE or DISABLE. When enabled, Time stamp
(TIME[15:0]) value is sent in the last two data bytes of the 8-
byte message: TIME[7:0] in data byte 6 and TIME[15:8] in
data byte 7.

None.

DLC must be programmed as 8 in order Time Stamp (2 bytes)
to be sent over the CAN bus.
uint8_t CAN_Transmit (
TxMessage)
Initiates and transmits a CAN frame message.

CANx : where x can be 1 or 2 to to select the CAN
peripheral.

TxMessage : pointer to a structure which contains CAN Id,
CAN DLC and CAN data.

The number of the mailbox that is used for transmission
or CAN_TxStatus_NoMailBox if there is no empty
mailbox.

None.
uint8_t CAN_TransmitStatus (
TransmitMailbox)
Checks the transmission status of a CAN Frame.

CANx : where x can be 1 to select the CAN1 peripheral.

TransmitMailbox : the number of the mailbox that is used
for transmission.

CAN_TxStatus_Ok if the CAN driver transmits the
message, CAN_TxStatus_Failed in an other case.

None.
DocID023800 Rev 1
CAN_TypeDef * CANx,
CAN_TypeDef *
UM1581
CanTxMsg *
CANx, uint8_t