Controller Area Network (CAN)
Prototype:
void
ROM_CANRetrySet(uint32_t ui32Base,
bool bAutoRetry)
ROM Location:
ROM_APITABLE is an array of pointers located at 0x0100.0010.
ROM_CANTABLE is an array of pointers located at ROM_APITABLE[18].
ROM_CANRetrySet is a function pointer located at ROM_CANTABLE[14].
Parameters:
ui32Base is the base address of the CAN controller.
bAutoRetry enables automatic retransmission.
Description:
Enables or disables automatic retransmission of messages with detected errors. If bAutoRetry
is true, then automatic retransmission is enabled, otherwise it is disabled.
Returns:
None.
6.2.1.17 ROM_CANStatusGet
Reads one of the controller status registers.
Prototype:
uint32_t
ROM_CANStatusGet(uint32_t ui32Base,
tCANStsReg eStatusReg)
ROM Location:
ROM_APITABLE is an array of pointers located at 0x0100.0010.
ROM_CANTABLE is an array of pointers located at ROM_APITABLE[18].
ROM_CANStatusGet is a function pointer located at ROM_CANTABLE[8].
Parameters:
ui32Base is the base address of the CAN controller.
eStatusReg is the status register to read.
Description:
Reads a status register of the CAN controller and returns it to the caller. The different status
registers are:
CAN_STS_CONTROL - the main controller status
CAN_STS_TXREQUEST - bit mask of objects pending transmission
CAN_STS_NEWDAT - bit mask of objects with new data
CAN_STS_MSGVAL - bit mask of objects with valid configuration
When reading the main controller status register, a pending status interrupt is cleared. This
should be used in the interrupt handler for the CAN controller if the cause is a status interrupt.
The controller status register fields are as follows:
CAN_STATUS_BUS_OFF - controller is in bus-off condition
66 April 8, 2013
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