Transmission of multiple message objects(DCAN RM57)

Akshay Immanuel

Expert 1160 points

Other Parts Discussed in Thread: HALCOGEN

Section 26.9 of the TRM for RM57 states that

"Transmission of multiple message objects may be requested at the same time"

How do you do that? Because the Halcogen code function canTransmit() is only for sending a single message object

over 9 years ago

0 Akshay Immanuel over 9 years ago

Expert 1160 points

Is it by enabling all the message objects i want to send at the same time in the TxRQ register by Setting corresponding message object bits?

0 Charles Tsai over 9 years ago in reply to Akshay Immanuel

TI__Guru**** 191886 points

Hi Akshay,
Yes, the TxRqst bit in the message objects need to be set first. Afterward, when you call the canTransmit() for the specified message object the message will be transferred.

0 Akshay Immanuel over 9 years ago in reply to Charles Tsai

Expert 1160 points

canTransmit() takes the parameter messagebox. I want to send a range of messagebox numbers like for example 1-8. i have to write my own driver for that part?

0 Charles Tsai over 9 years ago in reply to Akshay Immanuel

TI__Guru**** 191886 points

Hi Akshay,
Yes, you will need to use the interface register to update the message objects individually.

Arm-based microcontrollers

Arm-based microcontrollers forum

Transmission of multiple message objects(DCAN RM57)