topic MIMXRT1060-EVKB LPSPI testing in i.MX RT Crossover MCUs

MIMXRT1060-EVKB LPSPI testing

niz — Fri, 08 Jul 2022 17:06:27 GMT

I am trying test the LP SPI on the MIMXRT1060-EVKB Board, and I found that one of the SPI port is on the J17 connector, from the schematic there are DNP commented on the SPI lines.

Does that mean that I need to short R356, R350, R346 and R362 to make it work with the connector J17?

Thanks a lot for your help

Re: MIMXRT1060-EVKB LPSPI testing

Omar_Anguiano — Mon, 11 Jul 2022 20:09:02 GMT

Hello
Hope you are well.
You are correct, the connections need to be shorted to use those pins.

If you have more questions do not hesitate to ask me.
Best regards,
Omar

Re: MIMXRT1060-EVKB LPSPI testing

niz — Thu, 14 Jul 2022 19:17:21 GMT

Hi Omar

Thanks for the confirmation, that is helpful.

I have one more question about the CAN testing:

According to the circuit, it needs the 10K pull up resister:

So is it OK that we just short the R269 and put the CAN_STBY to high by the MCU without putting 10K resister at R268?

I did this modification without connecting R268, drive the CAN_STBY to high by MCU.

And I cannot send CAN out successfully by running "flexcan_ping_pong_buffer_transfer" example. The MbStatusFlags are always 0 (IFLAG1 and IFLAG2).

So is pull up resister R 267 is a must? or something else might be wrong?

Thanks a lot for your help

Re: MIMXRT1060-EVKB LPSPI testing

niz — Thu, 14 Jul 2022 19:56:10 GMT

Never mind, I just figure that out, I need to put the standby to low instead of high.

Now I can see it is transmitting messages.

Thanks