Thanks for Reply @Julián_AragónM
Firstly, check if Multilink's firmware is up to date, and if the EVB is powered correctly; either with a 12V jack (J107 in 1-2 position), or with USB (J107 in 2-3 position).
-> I'm not sure if multilink's firmware is up to date. I recently tried to solve this problem by putting OpenSDA_V2_1, V3_2.bin into EVB-S32K144(D:), but I'm not sure if it worked. Currently, when the board is powered on, LEDs D1(Red), D2, D3(Green) are on.
Is this the first time trying to connect to the board? Have you successfully programmed the chip before? Have you tried to connect through an external debugger (not OpenSDA)?
-> This is my first time downloading or debugging a program. I'm experiencing almost the same issue when trying to connect to a sample MCU via PEMicro.
Also, please try connecting with an empty project —either a hello world, or a blink example from SDK).
-> All are impossible
You can try to use Kinetis Recovery Tool to halt the MCU. Please refer to the community's posts: Solved: The GDB Server was not able to establish a connection to the target processor.
-> Even if I unplug and plug pins 1 - 2 of j107, there is no response.
Lee7_0-1756342301767.png
Lastly, you can also try to attach to the running MCU to see if the application is stuck somewhere:
->I checked the checkbox and debugged, and it seems to connect, but the status is as below.
Lee7_1-1756342869758.png