evkbmimxrt1170 SDK examples working for M4 but not for M7

[ricardofranca]

Hello,

I borrowed a MIMXRT1170-EVK from a friend and, first of all, I wanted to make sure the basic demo applications are working. While I managed to run "hello_world_demo_cm4" and "new_project_cm4" without any issue, I could not make new_project_cm7 or hello_world_cm7 or iled_blinky_cm7 work. I get a seemingly successful build and load, but then something crashes and I get the following:

As this is my first contact with ARM cores, I had not changed a single line of code. What could be happening here?

Thanks!

Ricardo

[Pablo_Ramos]

Hi @ricardofranca,

We are investigating your problem; however we would need more information about the marking code of the chip. For making things simpler, could you please send us a photo of the chip? Also, let us know the schematic revision of your board.

Today I did a sanity test on the demo evkbmimxrt1170_iled_blinky_cm7 using MCUXpresso24.9 and SDK 16.100 and all works as expected, could you please tell me which MCUXpresso and SDK versions are you using?

[ricardofranca]

Hi @Pablo_Ramos ,

First of all, I did not notice there is a difference between "EVK" and "EVKB"... sorry! My board is a MIMXRT1170-EVK but I was using an SDK from EVKB. I do not know the difference between these boards but, while CM4 examples work for both, CM7 EVKB blinky LED did not. The EVK blinky LED example worked fine after I got the correct SDK.

Just to be sure I am now doing things correctly: is it normal for D34 to be fixed red when I turn the board switch on and D5 to blink quickly when I am running the debugger (blinking stops when I pause the debug session)?

Thanks,

Ricardo 

[Pablo_Ramos · Accepted solution]

Hi @ricardofranca,

I'm glad to hear that you manage to solve the issue.

If you are interest in the difference between RT1170 EVK and RT1170 EVKB you can take a look to MIMXRT1170 EVKB Board Hardware User Guide chapter 6 Key differences between EVK and EVKB

About the behavior you mention, it is completely normal, the D5 is from the debugger and the D34 is a user led that in the reset is set with a pull-up.