set up periodic transmission of this CAN message. Actual transmission starts/stops with CAN channel start/stop

To set up periodic transmission of a CAN message, you need to configure the CAN controller to send the message at a fixed interval. This can be achieved by programming the CAN controller's timing registers to specify the desired transmission rate.

Once the CAN controller is set up for periodic transmission, the message will be sent repeatedly at the configured interval until the CAN channel is stopped. The CAN channel start/stop commands can be issued by the host processor or by using an external trigger.

It's important to note that the CAN message transmission rate should be carefully chosen based on the desired application and the capabilities of the CAN bus. Overloading the CAN bus with too many messages or transmitting at too high a rate can lead to communication errors and data loss.