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C24x CAN Transmit

3-13

3C24x CAN Transmit

Purpose Configure a CAN mailbox to transmit messages to the CAN pins

Library c2400dspchiplib in Embedded Target for TI C2000 DSP

Description The C24x Control Area Network (CAN) Transmit block generates source code

for transmitting CAN messages through a CAN mailbox. The CAN module on

the DSP chip provides serial communication capability and has six mailboxes

— two for receive, two for transmit, and two configurable for receive or

transmit.The C24x supports CAN data frames in standard or extended format.

Detailed information on the CAN module is in the TMS320LF/LC240xA DSP

Controller Reference Guide — System and Peripherals, Literature Number

SPRU357B, available at the Texas Instruments website.

Mailbox number — Unique number between 0 and 5 that refers to a mailbox

area in RAM. Mailboxes 0 and 1 are receive mailboxes, 2 and 3 are configurable

for receive or transmit, and 4 and 5 are transmit mailboxes. In standard data

frame mode, the mailbox number determines priority.

Message identifier — Identifier of length 11 bits for standard frame size or

length 29 bits for extended frame size in decimal, binary, or hex. If in binary or

hex, use

bin2dec(' ') or hex2dec(' '), respectively, to convert the entry. The

message identifier is coded into a message that is sent to the CAN bus.

Message type — Select Standard (11-bit identifier) or Extended

(29-bit identifier).

Mailbox: 5

C24x CAN

Transmit

Msg

C24x CAN Transmit

1 2 ... 50 51 52 53 54 55 56 57 58 59 60 ... 111 112

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