IWR1443BOOST: TIDEP-0091:level sensing demo: timing measurement

Hello Shouhei,

I need more information in order to answer your question. Are you using the prebuilt binaries or have you modified the code? If you have modified the code would you be able to share what kind of modifications you have made?


Cheers,
Akash

Thank you for reply, Akash.

I modified only "demo_common.h" in the folder:level_sense_demo/MSP432, in order to report execution times to UART.
In particular, I uncommented "#define REPORT_IR14_TIME_MEASUREMENTS".
In the hardware, 0-Ω resistors were added to R102 and R164 of IWR1443BOOST.

I want to use the modified code as I wrote above, but
if I use the prebuilt binaries, does 0-Ω resistor need to be added to R164 or not?
In the prebuilt binaries, Is "#define REPORT_IR14_TIME_MEASUREMENTS" commented out or uncommented?

Hello Akash,

I do not know if this is related to the problem being consulted,but I will let you know.
When I build "lsdemo_14xx_mss" in CCS, the following message is displayed in console window.
"[post-build] Error 216 (ignored)" is displayed, but "lsdemo_14xx_mss.bin" can be generated after build project.

-----console window-----
Parsing the input object file, lsdemo_14xx_mss.xer4f.
Appending zeros 0
Appending zeros 256
Appending zeros 59952
File conversion complete!
C:/ti/mmwave_sdk_01_01_00_02/packages/scripts/ImageCreator/append_bin_crc/gen_bincrc32.exe lsdemo_14xx_mss.bin
makefile:196: recipe for target 'post-build' failed
process_begin: CreateProcess(C:\ti\mmwave_sdk_01_01_00_02\packages\scripts\ImageCreator\append_bin_crc\gen_bincrc32.exe,
C:/ti/mmwave_sdk_01_01_00_02/packages/scripts/ImageCreator/append_bin_crc/gen_bincrc32.exe lsdemo_14xx_mss.bin, ...) failed.
make (e=216): Error 216
gmake[3]: [post-build] Error 216 (ignored)


**** Build Finished ****
-------------------------

Another more,size of prebuild "lsdemo_msp432_m4f.out" is 2861KB,
but size of "lsdemo_msp432_m4f.out" generated after build "lsdemo_msp432_m4f" is only 2681KB.


Regards,
Shouhei

Thank your reply, Dave

I tried running pre-built binaries, and a figure shown below is displayed on TeraTerm.
The number representing the distance is very large,
As time goes by, the screen gets settled. What is going wrong in the modified hardware?

Then,I rebuilded both IWR1443 and MSP432 executables with the uncommented REPORT_IR14_TIME_MEASUREMENTS.
However, "measurement timeout(Boot)" is displayed on Tera term.

Regards,
Shouhei

Yes, that output is obviously wrong.  I have not seen it look like that.  First, please check that you are using the exact versions of the tools specified on slide 5 (Pre-requisites) of the Getting Started guide.  Use version 1.40 of the MSP432 SimpleLink, do not use version 1.60.  If you have 1.60 installed, uninstall it, install 1.40, then restart CCS and go into the MSP432's project properties and make sure 1.40 is selected.  Do a clean + build.

Another possibility is that your resistors are not correctly installed.  Please make sure they are on the correct pads, and that no solder is touching adjacent pads.  If you don't see the IWR1443's LEDs turn on and off when you do a single shot, then you know that R102 is not present.

You can run the demo with no resistors installed (or ignoring the resistors that are installed).  If you follow the instructions in section 5.2 of the Getting Started guide, you can run a single measurement in CCS and see what the measurements are that will be sent to the MSP432 over SPI. This will tell you if the problem is in the 1443, or in the communication with MSP432.

  -dave