RTT

Modes

SEGGER RTT (SEGGER Real Time Transfer) can run in different modes where some modes are not available on all devices but other modes are which then have an impact on the real time behavior of the device.

Background mode

This is the mode which RTT was initially introduced with. In this mode, J-Link can access the memory of the target system while the MCU + application keeps running (background memory access), effectively not impacting the real time behavior of the application. In order to use this mode, the target MCU needs to support background memory accesses.

The following cores (and therefore all devices based on them) support background memory accesses:

• Cortex-M
• Renesas RX

Stop mode

TBD