CanGetCanTiming

Function

Get the CAN communication timing settings.

Format

Ret = CanGetCanTiming ( Id , ChannelNo , Bitrate , TSeg1 , SJW , TSeg2 )

Parameters

Id [ C: short ] [ Python: ctypes.c_short ]
Specify the device ID retrieved from CanInit.

ChannelNo [ C: unsigned short ] [ Python: ctypes.c_ushort ]
Specify the channel number.

Bitrate [ C: unsigned int * ] [ Python: ctypes.POINTER(ctypes.c_uint) ]
Get the bitrate. The unit is bps. (bit per second)

TSeg1 [ C: unsigned short * ] [ Python: ctypes.POINTER(ctypes.c_ushort) ]
Get the time segment 1. The unit is TQ.

SJW [ C: unsigned short * ] [ Python: ctypes.POINTER(ctypes.c_ushort) ]
Get the SJW. The unit is TQ.

TSeg2 [ C: unsigned short * ] [ Python: ctypes.POINTER(ctypes.c_ushort) ]
Get the time segment 2. The unit is TQ.

Return Value

Ret [ C: long ] [ Python: ctypes.c_long ]

Definition

Value
[Dec]

Description

CAN_ERR_SUCCESS

0

Normality completion

CAN_ERR_DLL_INVALID_ID

10001

Invalid ID specified.

CAN_ERR_DLL_CALL_DRIVER

10002

Driver can't be called (Failed in the ioctl).

CAN_ERR_DLL_BUFF_ADDRESS

10100

Invalid data buffer address.

CAN_ERR_SYS_CH_NO

20101

Channel number is outside the settable range

The others (See also: Details of Error Code)

Initial Value

None

Remarks

Get the CAN communication timing settings.
It can be used even when connected to CAN bus.

For details, please refer to CAN communication transmission time.

Example

Get Bitrate, TSeg1, SJW, TSeg2 set to ChannelNo = 1.

C

long Ret;

unsigned int Bitrate;

unsigned short TSeg1;

unsigned short SJW;

unsigned short TSeg2;
Ret = CanSetCanTiming ( Id , 1 , &Bitrate , &TSeg1 , &SJW , &TSeg2 );
 

Python

Ret = ctypes.c_long()

Bitrate = ctypes.ctypes.c_uint()

TSeg1 = ctypes.c_ushort()

SJW = ctypes.c_ushort()

TSeg2 = ctypes.c_ushort()


Ret.value = ccan.CanSetCanTiming ( Id , 1 , ctypes.byref(Bitrate) , ctypes.byref(TSeg1) , ctypes.byref(SJW) , ctypes.byref(TSeg2) )

See Also

CanSetCanTiming