pack
Pack signal data into CAN message
Description
Examples
Pack a CAN Message
Pack a CAN message with a 16-bit integer value of 1000.
message = canMessage(500,false,8);
pack(message,int16(1000),0,16,'LittleEndian')
message.Data
1×8 uint8 row vector 232 3 0 0 0 0 0 0
Note that 1000 = (3 x 256) + 232.
Pack a CAN message with a double value of 3.14
. A
double requires 64 bits.
pack(message,3.14,0,64,'LittleEndian')
Pack a CAN message with a single value of -40
. A single
requires 32 bits.
pack(message,single(-40),0,32,'LittleEndian')
Input Arguments
message
— CAN message
CAN message object
CAN message, specified as a CAN message object.
Example: canMessage
value
— Value of signal to pack into message
numeric value
Value of signal to pack into message, specified as a numeric value. The
value is assumed decimal, and distributed among the 8 bytes of the message
Data
property. You should convert the value into
the data type expected for transmission.
Example: int16(1000)
Data Types: single
| double
| int8
| int16
| int32
| int64
| uint8
| uint16
| uint32
| uint64
startbit
— Signal starting bit in data
single | double
Signal starting bit in the data, specified as a single or double value.
This is the least significant bit position in the signal data. Accepted
values for startbit
are from 0
through
63
, inclusive.
Example: 0
Data Types: single
| double
signalsize
— Length of signal in bits
numeric value
Length of the signal in bits, specified as a numeric value. Accepted
values for signalsize
are from 1
through 64
, inclusive.
Example: 16
Data Types: single
| double
| int8
| int16
| int32
| int64
| uint8
| uint16
| uint32
| uint64
byteorder
— Signal byte order format
'LittleEndian'
| 'BigEndian'
Signal byte order format, specified as 'LittleEndian'
or 'BigEndian'
.
Example: 'LittleEndian'
Data Types: char
| string
Version History
Introduced in R2009a
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