topic 回复： S32K312 RTT PRINT Issues in S32K

S32K312 RTT PRINT Issues

zhaobasui — Thu, 18 Sep 2025 09:11:57 GMT

Hello everyone, I am currently learning how to use the S32K312 chip and configure SWD 1000KHz debugging with JLINK. This way, debugging is normal. However, when trying to use SEGDER's RTT tool to print data, every time I use the upper computer RTT viewer to connect, it will display a successful connection and the chip will run away (regardless of whether it is in Debug mode or not). My chip has a one second cycle Leb light task, and if it is constantly on or off when running, it should not be continuously lowered by RST. JLINK version 8.6.0 also supports S32K312. May I ask why? Thank you

回复： S32K312 RTT PRINT Issues

zhaobasui — Thu, 18 Sep 2025 09:14:52 GMT

The same device, the same upper computer, and the same RTT code can all be printed on S32K144.

Re: S32K312 RTT PRINT Issues

Julián_AragónM — Thu, 18 Sep 2025 19:07:37 GMT

Hi @zhaobasui,

Have you configured the _SEGGER_RTT variable from the map file to the tool? It is mentioned in this other community post: Solved: How I can use the RTT in S32DS for S32 Platform 3.5 - NXP Community.

Please try contacting SEGGER as well, as this product is not from NXP.

Best regards,
Julián