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3.2.1. Controlling ETM programming

When programming the ETM registers, you must enable all the changes at the same time. For example, if the counter is reprogrammed, it might start to count based on incorrect events, before the trigger condition has been correctly set up.

You must use the ETM main enable in the TRCPRGCTLR to disable all trace operations during programming. See Programming Control Register. Figure 3.1 shows the procedure to follow.

Figure 3.1. Programming ETM-R7 registers

Figure 3.1. Programming ETM-R7 registers

The Cortex-R7 MPCore processor does not have to be in the debug state while you program the ETM registers.

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