IWR6843AOP: Confusion regarding People Counting and 6843 AOP EVM

Hi Matthew,

1. Which exact version of the Industrial toolbox are you looking at and which people counting demo are you trying to run (as there are 3 demos under people counting - overhead 3D people counting, 3D people counting and the Sense and DIrect HVAC demo)?

 2. If you are looking at the data port output in a terminal program such as Tera term directly, it will look like garbage, even with the right baud rate settings. Because the demos stream out binary data which is meant to be interpreted by a visualizer as we provide.

Regards

-Nitin

Hi Nitin,

I am running industrial toolbox 4 4 1, 3d people counting (not overhead or hvac). The one where it is recommended to use 2m elevation and 10 degree tilt

Yes, I am aware, I am looking at the hex output

by garbage I mean I cant find the header "magic word"/sync element, or any other discernible indicators of header data.

I have use the out of the box bin file, and manage to identify the header and using the defined data format I can extract the data with my own software no problem.

The documentation indicates that the header for the 3d people counting bin leads with the same "magic word" as out of the box demo, but its not there anywhere in the stream I am getting

I cant find the magic word patter in the stream visually
abut to be sure I have this little program to scan for it
It works fine with out of the box demo, it can identify packets
but it finds nothing in the stream from device with 3d people counting

#include <sys/stat.h>
#include <fcntl.h>
#include <termios.h>
#include <stdio.h>
#include <string.h>
#include <errno.h>        
#include <stdlib.h> 
 #include <unistd.h>


#define BAUDRATE B921600
#define MODEMDEVICE "/dev/ttyUSB1"
#define FALSE 0
#define TRUE 1
void openport(void);
void sendport(void);
void readport(void);
int fd=0, n;
static int cnt, size, s_cnt;
unsigned char *var;
struct termios oldtp, newtp;
char sendcmd1[10]="\0";
FILE *file;
int magic[]={2,1,4,3,6,5,8,7};

void  readport(void){
  unsigned char buff;
  int counter=0;
  while(1){
    float v;
    unsigned int ival;
    n=read(fd, &buff, 1);
    fcntl(fd,F_SETFL,0);
    if(n==-1){goto quit;}
    if(n>0){
        if(buff==magic[counter]){
        counter++;
        }else{
        counter=0;
        }
      if(counter==8){
        printf("packet\n");
        }
      }
    }
  quit:
  return;
  }
void openport(void){
  fd = open(MODEMDEVICE, O_RDWR | O_NOCTTY |O_NDELAY );
  printf("fd :%d\n",fd);
  if (fd <0){
    perror(MODEMDEVICE);
    }
                                                                                
  fcntl(fd,F_SETFL,0);
  tcgetattr(fd,&oldtp); 
  bzero(&newtp, sizeof(newtp));
  newtp.c_cflag = BAUDRATE | CRTSCTS | CS8 | CLOCAL | CREAD;
  newtp.c_iflag = IGNPAR | ICRNL;
  }

int  main(){
  openport();
  readport();
  return 0;
  }

Hi Matthew,

Before getting into debugging, especially on Linux, please try to get the demo working using the provided visualizer on a Windows machine (we have verified that the demo works on a Windows machine with the provided visualizer).

Which configuration file are you using with the 3D people counting visualizer?

For 3D people counting demo, you need to send a configuration corresponding to your board type (ISK, AOP or ODS) from the following directory:

C:\ti\mmwave_industrial_toolbox_4_4_1\labs\people_counting\68xx_3D_people_counting\chirp_configs

or the following (which is just a copy of the above directory)

C:\ti\mmwave_industrial_toolbox_4_4_1\labs\people_counting\visualizer\chirp_configs\3D_People_Counting

-Nitin

Hi Nitin,

I installed the visualizer on 2 different windows machines

when I click "select config" nothing happens.. no pop up.. no option to select a file at all.

I compressed the folder "visualizer"

put it on the windows 10 machines

ran the install program

and both time the "select config" button has absolutely no response.

Hi Matthew,

The behavior you describe, indicates some external factor (e.g. OS, permissions, python version or something of that nature) creating problem with the GUI. I installed the GUI on my own windows 10 machine and it runs without any issues. Could you try to run the GUI through source? You will need to install the required version of python and other utilities by following the instructions given in the Developer's guide section.