RM42L432: Configure the registers of CAN's library

SIAGH MATHEO

Prodigy 50 points

Part Number: RM42L432
Other Parts Discussed in Thread: HALCOGEN

Hi,

I want to know how configure CAN's registers without Halcogen.

How to know if the messageBox is in RX or TX.

Thanks in advance

over 3 years ago

0 QJ Wang over 3 years ago

TI__Guru**** 192316 points

Hi Siagh,

The 29bit (DIR) of IFx Arbitration Register (DCAN IFxARB) is to define the message direction.

DIR=0, MessageBox is for Receive

DIR=1, MessageBox is for Transmit

0 SIAGH MATHEO over 2 years ago in reply to QJ Wang

Prodigy 50 points

Thanks for you answer,

Can I configure messageBOX1 on TX and RX directly on CAN's register ? and How ?

Regard,

Matheo

+1 QJ Wang over 2 years ago in reply to SIAGH MATHEO

TI__Guru**** 192316 points

Hi Matheo,

The messageBOX1 can be configured as either TX or RX, not both.

To configure the message object 1 location CAM message RAM, the Interface Register sets IF1 or IF2 has to be used to access to the message object in Message RAM.

For example:

canREG1->IF1MSK = 0x........;
canREG1->IF1ARB = 0x......;
canREG1->IF1MCTL = 0x......;
canREG1->IF1CMD = 0x......;
canREG1->IF1NO = 1U; //message object 1

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RM42L432: Configure the registers of CAN's library