IWR1443BOOST: Level Sensing Demo: No output from MSP432 Eval kit on Serial Terminal (Putty/Teraterm)

Hi Mahendra,

1. As a first sanity check, could you try running the SDK out of box demo on your modified IWR1443BOOST board to ensure that it is functional? Please refer to the mmWave-SDK 2.1 user guide on how to flash and run the SDK demo using mmWave Demo Visualizer.

2. Assuming that you've confirmed that the mmWave EVM is functional, at step 3 in your output sequence above, do you get output only up to "MSP432: Wait for power good" as you listed above? Do you not see the next 2 messages i.e. "MSP432: Power good" and "MSP432: Ready" message as shown in the Level sense design user guide (section 5.1)?

From the MSP432 code in main_thread.c given below, the MSP waits on receiving an ACK word on the I2C interface and prints the Power good and Ready message. Not getting these output messages could point towards a connection/mating issue between the MSP432 board and the IWR1443BOOST board.

    do{

           uart_send_string("MSP432: Wait for power good....", UART_LF);
           usleep(1000);
           I2C_transfer(i2c, &i2cTransaction);
           usleep(1000);


       } while(rxBuffer[0] != 0xcc);

    uart_send_string("MSP432: Power good!", UART_LF);
    uart_send_string("MSP432: Ready!", UART_LF);

Regards

-Nitin

Hi Nitin

I think IWR1443 eval kit is fine as I get correct distance in debug mode \TI\tidcde2c\level_sense_demo\iwr1443\Debug\level_sense_demo.xer4f.

I do not get "MSP432: Power good" and "MSP432: Ready" message which means some interface issue between MSP432 and IWR1443. Board is mated correctly, so I dont expect any physical connection issue.

I measured voltage at R74 and R102, both are at 2.5V, I am suspecting likely MSP432 board is not fully functional. I have ordered new MSP432 eval kit to rule out this factor.

I can probe I2C interface on Monday to check any activity on the link.

Has below image been tested on eval kits before?

TI\tidcde2c\level_sense_demo\msp432\Debug\ msp_level_sense_demo.out

Thanks

Mahendra

Hi Mahendra,

This has been tested on eval kits before so the problem might be your board. It actually might be on your IWR1443BOOST.

Can you confirm you've made the hardware modifications in the Getting Started Guide or outline which modifications you have or have not made?

If you have not changed the PMIC to the PMIC J variant, then you can try commenting out the #define PMIC_TYPE_J in the demmo_common.h file in the msp folder and then rebuilding BOTH the IWR (.bin) and MSP (.out) binaries.

Let me know on both of these and we can continue the discussion.

Cheers,

Akash

Hi Akash

I havent modified board to PMIC J version as it was not marked as mandatory change.

I tried compiling demo images, I could generate image for IWR1443, However getting below  and some other errors for MSP432.

"../main.c", line 55: fatal error #1965: cannot open source file "pthread.h"

Could you generate files for me and send it across so that we could check on this hypothesis?

Thanks

Mahendra

Hi Mahendra,

I am not seeing this issue.

Can you confirm you are using the MSP432 SimpleLink SDK Version 1.40? Newer versions will not work.

You should delete newer versions of the MSP432 Simple Link SDK. You should also completely delete the projects from your CCS project workspace and re-import and rebuild.

Let me know if you are still having issues.

Cheers,

Akash

Hi Akash

I changed to old SDK MSP432 SimpleLink SDK Version 1.40,  I see some garbage print on Putty terminal after power is applied to IWR1443 eval kit (5V through round black connector)

IW▒

IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒
IW▒

Regards

Mahendra

Hi Akash

I bought new MSP432 eval kit and also tried with it. Below is what I get on serial terminal and keeps scrolling with the same print

I see below print on putty terminal.

IWR1443 Level Sensing Demo:

Avail▒
IWR1443 Level Sensing Demo:

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IWR1443 Level Sensing Demo:

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IWR1443 Level Sensing Demo:

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IWR1443 Level Sensing Demo:

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IWR1443 Level Sensing Demo:

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IWR1443 Level Sensing Demo:

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IWR1443 Level Sensing Demo: