em_can.h File Reference

Controller Area Network API.

Version
5.5.0

License

Copyright 2016 Silicon Laboratories, Inc. www.silabs.com

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Definition in file em_can.h .

#include " em_bus.h "
#include " em_device.h "
#include <stdbool.h>

Data Structures

struct CAN_Init_TypeDef
struct CAN_MessageObject_TypeDef

Macros

#define CAN_INIT_DEFAULT

Enumerations

enum CAN_ErrorCode_TypeDef {
canErrorNoError = CAN_STATUS_LEC_NONE,
canErrorStuff = CAN_STATUS_LEC_STUFF,
canErrorForm = CAN_STATUS_LEC_FORM,
canErrorAck = CAN_STATUS_LEC_ACK,
canErrorBit1 = CAN_STATUS_LEC_BIT1,
canErrorBit0 = CAN_STATUS_LEC_BIT0,
canErrorCrc = CAN_STATUS_LEC_CRC,
canErrorUnused = CAN_STATUS_LEC_UNUSED
}
enum CAN_Mode_TypeDef {
canModeNormal ,
canModeBasic ,
canModeLoopBack ,
canModeSilentLoopBack ,
canModeSilent
}

Functions

void CAN_AbortSendMessage ( CAN_TypeDef *can, uint8_t interface, uint8_t msgNum, bool wait)
Abort sending a message.
void CAN_ConfigureMessageObject ( CAN_TypeDef *can, uint8_t interface, uint8_t msgNum, bool valid, bool tx, bool remoteTransfer, bool endOfBuffer, bool wait)
Configure valid, TX/RX, remoteTransfer for a specific Message Object.
__STATIC_INLINE void CAN_Enable ( CAN_TypeDef *can, bool enable)
Enable the Host Controller to send messages.
uint32_t CAN_GetClockFrequency ( CAN_TypeDef *can)
Get the CAN module frequency.
__STATIC_INLINE uint32_t CAN_GetErrorCount ( CAN_TypeDef *can)
Get the error count.
__STATIC_INLINE CAN_ErrorCode_TypeDef CAN_GetLastErrorCode ( CAN_TypeDef *can)
Get the last error code and clear its register.
__STATIC_INLINE uint32_t CAN_HasNewdata ( CAN_TypeDef *can)
Indicates which message objects have received new data.
void CAN_Init ( CAN_TypeDef *can, const CAN_Init_TypeDef *init)
Initialize CAN.
__STATIC_INLINE bool CAN_IsEnabled ( CAN_TypeDef *can)
Give the communication capabilities state.
__STATIC_INLINE void CAN_MessageIntClear ( CAN_TypeDef *can, uint32_t flags)
Clear one or more pending CAN message interrupts.
__STATIC_INLINE void CAN_MessageIntDisable ( CAN_TypeDef *can, uint32_t flags)
Disable CAN message interrupts.
__STATIC_INLINE void CAN_MessageIntEnable ( CAN_TypeDef *can, uint32_t flags)
Enable CAN message interrupts.
__STATIC_INLINE uint32_t CAN_MessageIntGet ( CAN_TypeDef *can)
Get pending CAN message interrupt flags.
__STATIC_INLINE uint32_t CAN_MessageIntGetEnabled ( CAN_TypeDef *can)
Get CAN message interrupt flags that are pending and enabled.
__STATIC_INLINE void CAN_MessageIntSet ( CAN_TypeDef *can, uint32_t flags)
Set one or more CAN message interrupts.
bool CAN_MessageLost ( CAN_TypeDef *can, uint8_t interface, uint8_t msgNum)
Read a Message Object to find if a message was lost ; reset the 'Message Lost' flag.
void CAN_ReadMessage ( CAN_TypeDef *can, uint8_t interface, CAN_MessageObject_TypeDef *message)
Read data from a Message Object in RAM and store it in a message.
__STATIC_INLINE void CAN_ReadyWait ( CAN_TypeDef *can, uint8_t interface)
Waiting function.
void CAN_Reset ( CAN_TypeDef *can)
Set all CAN registers to RESETVALUE. Leave the CAN device disabled.
void CAN_ResetMessages ( CAN_TypeDef *can, uint8_t interface)
Reset all Message Objects and set their data to 0.
void CAN_SendMessage ( CAN_TypeDef *can, uint8_t interface, const CAN_MessageObject_TypeDef *message, bool wait)
Send data from the Message Object message.
void CAN_SendRequest ( CAN_TypeDef *can, uint8_t interface, uint8_t msgNum, bool wait)
Send a request for writing or reading RAM of the Message Object msgNum.
void CAN_SetBitTiming ( CAN_TypeDef *can, uint32_t bitrate, uint16_t propagationTimeSegment, uint16_t phaseBufferSegment1, uint16_t phaseBufferSegment2, uint16_t synchronisationJumpWidth)
Set the bitrate and its parameters.
void CAN_SetIdAndFilter ( CAN_TypeDef *can, uint8_t interface, bool useMask, const CAN_MessageObject_TypeDef *message, bool wait)
Set the ID and the filter for a specific Message Object.
void CAN_SetMode ( CAN_TypeDef *can, CAN_Mode_TypeDef mode)
Set the CAN operation mode.
void CAN_SetRoute ( CAN_TypeDef *can, bool active, uint16_t pinRxLoc, uint16_t pinTxLoc)
Set the ROUTE registers.
__STATIC_INLINE void CAN_StatusClear ( CAN_TypeDef *can, uint32_t flags)
Clear CAN status.
__STATIC_INLINE uint32_t CAN_StatusGet ( CAN_TypeDef *can)
Get CAN status.
__STATIC_INLINE void CAN_StatusIntClear ( CAN_TypeDef *can, uint32_t flags)
Clear one or more pending CAN status interrupts.
__STATIC_INLINE void CAN_StatusIntDisable ( CAN_TypeDef *can, uint32_t flags)
Disable CAN status interrupts.
__STATIC_INLINE void CAN_StatusIntEnable ( CAN_TypeDef *can, uint32_t flags)
Enable CAN status interrupts.
__STATIC_INLINE uint32_t CAN_StatusIntGet ( CAN_TypeDef *can)
Get pending CAN status interrupt flags.
__STATIC_INLINE uint32_t CAN_StatusIntGetEnabled ( CAN_TypeDef *can)
Get pending and enabled CAN status interrupt flags.
__STATIC_INLINE void CAN_StatusIntSet ( CAN_TypeDef *can, uint32_t flags)
Set one or more CAN status interrupts.
void CAN_WriteData ( CAN_TypeDef *can, uint8_t interface, const CAN_MessageObject_TypeDef *message)
Write data from a message to the MIRx registers.