topic Re: Lpspi_Half_Duplex example code for S32K344/358 in S32K

Lpspi_Half_Duplex example code for S32K344/358

abdul_rahman — Thu, 26 Sep 2024 05:59:27 GMT

Hi team,

I'm very new to this controller and I need help in seeing the RxSlaveBuffer data in the Lpspi_Half_Duplex example code given in the IDE. The screenshots of the issues I'm facing are shown below,

The RxSlaveBuffer array isn't receiving data from TxMasterBuffer but it is showing the exact hex, dec, bin values of the master.

I'm not understanding the errors in the Expressions tab of Debug mode.

It would be really helpful in helping me with detailed explanation of the problems and solutions needed.

#S32K358 #Lpspi_HalfDuplex

Re: Lpspi_Half_Duplex example code for S32K344/358

VaneB — Thu, 26 Sep 2024 18:02:12 GMT

Hi @abdul_rahman

Which version of RTD are you using? Did you make any changes to the example code? Are you using a custom board or an EVB?

BR, VaneB

Re: Lpspi_Half_Duplex example code for S32K344/358

abdul_rahman — Fri, 27 Sep 2024 04:06:45 GMT

Hi @VaneB

Which version of RTD are you using? Version 4

Did you make any changes to the example code? No

Are you using a custom board or an EVB? I'm running the code in evaluation board S32K3X4EVB

Can we personal chat on this?

Re: Lpspi_Half_Duplex example code for S32K344/358

VaneB — Fri, 27 Sep 2024 17:52:30 GMT

Hi @abdul_rahman

What is the maskset of the MCU? 0P55A pre-prodution or 1P55A production. There seems to be an issue with the PTB3 0P55A 172HDQFP pin.

Re: Lpspi_Half_Duplex example code for S32K344/358

abdul_rahman — Fri, 27 Sep 2024 17:59:53 GMT

Hi @VaneB

How do I see this maskset in the S32DS IDE? What does a maskset mean? Why is it important in pin configuration?

Re: Lpspi_Half_Duplex example code for S32K344/358

VaneB — Fri, 27 Sep 2024 18:19:12 GMT

Hi @abdul_rahman

The mask set is identified by a 5-character code consisting of a version number, a letter, two numerical digits, and a letter. This is printed in the MCU.

Re: Lpspi_Half_Duplex example code for S32K344/358

abdul_rahman — Sat, 28 Sep 2024 04:13:46 GMT

Hi @VaneB

Thanks for the explaination. The MCU in the evaluation board is 1P55A version with 172QFP package.

Re: Lpspi_Half_Duplex example code for S32K344/358

abdul_rahman — Mon, 30 Sep 2024 03:24:06 GMT

Hi @VaneB

Please reply to this. I really need your help as no one around me knows about the controller, let alone operating it!!

P.S.- The master clock (PTB29) and CS (PTB25) pins are showing a continuous pulse of 3.3V when seen on the oscilloscope. Why is the clock pin not working?

Re: Lpspi_Half_Duplex example code for S32K344/358

VaneB — Mon, 30 Sep 2024 18:41:20 GMT

Hi @abdul_rahman

I have tested the example code from my side and it works as expected, make sure you have connected the master and slave pins as mentioned in the description.txt file.

Re: Lpspi_Half_Duplex example code for S32K344/358

abdul_rahman — Mon, 30 Sep 2024 19:32:31 GMT

Hi @VaneB

I have connected the pins according to the description.txt file as well as from the pins tool. What else could be the problem?? Is it because I'm observing the RxSlave array when I "suspend" the program??

I'm also observing constant DC voltage of 3.3V in the Master's CLK and CS pins. What could this mean??

Re: Lpspi_Half_Duplex example code for S32K344/358

VaneB — Mon, 30 Sep 2024 21:52:21 GMT

Hi @abdul_rahman

Could you clarify where in the code you "suspend" the program?

Re: Lpspi_Half_Duplex example code for S32K344/358

abdul_rahman — Tue, 01 Oct 2024 09:32:48 GMT

Hi @VaneB

I have attached a screen video recording in .zip file of how I'm debugging the program from the start. Please look into it and let me know what could be problem.

Re: Lpspi_Half_Duplex example code for S32K344/358

abdul_rahman — Wed, 02 Oct 2024 09:26:02 GMT

Hi @VaneB

Have you looked into the screen recording video? What could be the issue during debugging the code?

Re: Lpspi_Half_Duplex example code for S32K344/358

VaneB — Wed, 02 Oct 2024 17:08:57 GMT

Hi @abdul_rahman

I do not see any issues while debugging, but as you mentioned, it seems that the slave is not receiving the information from the master. Please use a breakpoint at Exit_Example(Passed) to not let the program terminate and check the buffers. Also, could you share a picture of the three LPSPI signals? Lastly, make sure you have the jumper set correctly.

Re: Lpspi_Half_Duplex example code for S32K344/358

abdul_rahman — Thu, 03 Oct 2024 08:58:43 GMT

Hi @VaneB

"Please use a breakpoint at Exit_Example(Passed) to not let the program terminate and check the buffers.": I have attached a video in a .zip file to show how I've run the program. The master data is still not seen in the slave buffer as shown in the video. What could be the problem now?

"Also, could you share a picture of the three LPSPI signals?": The CLK, CS and data pins are showing the same 3.3 V as shown in the below picture.

Re: Lpspi_Half_Duplex example code for S32K344/358

VaneB — Thu, 03 Oct 2024 17:56:53 GMT

Hi @abdul_rahman

Sorry for the inconvenience, as I have not been able to reproduce your problem, I would like to confirm one thing.

PTB3 has output to two ARDUINO headers, J38.18 (DNP) and J37.14, did you connect a jumper from PTE0 (J37.9) to J37.14 or J38.18?

Re: Lpspi_Half_Duplex example code for S32K344/358

abdul_rahman — Thu, 03 Oct 2024 18:09:42 GMT

Hi @VaneB

I am aware that PTB3 has 2 arduino ports. I've tried connecting both ports. But none of them give the SPI data.

Re: Lpspi_Half_Duplex example code for S32K344/358

VaneB — Thu, 03 Oct 2024 21:46:39 GMT

Hi @abdul_rahman

Could you create a simple example code where you configure all the pins used for the Lpspi_Half_Duplex example as GPIO and toggle their state from high to low? I want to check if there is any issue in the functionality of any of the pins that does not allow the example to work correctly.

Re: Lpspi_Half_Duplex example code for S32K344/358

abdul_rahman — Fri, 04 Oct 2024 06:19:57 GMT

Hi @VaneB

I created the example toggle code as you said. But the program seems to be terminating as soon as I press "resume". The error message says,

"break at address "0x2010000" with no debug information available, or outside of program code."

I have attached a video recording of the debugging process as well as the example code I made as you said.

Apart from the above message, another type of error message was seen when I tried debugging the program again. The screenshot of it is attached below.

P.S.: Please look into this quickly. My professor told me to work on this and its been 2 weeks of my time going in vain behind this. My professor's patience is wearing thin!! Or else tag another person with the expertise to solve this problem quickly.

Re: Lpspi_Half_Duplex example code for S32K344/358

abdul_rahman — Fri, 04 Oct 2024 16:42:04 GMT

Hi @VaneB

I made a new code toggling the gpio pins, which I have attached below. The waveforms of the all the pins used in the Lpspi_Half_Duplex code are also attached below. PTB3 pin was showing 0V in the scope. Please look into the other pin results and let me know what could be the problem.