Differences between lec and lep

Wireless Connectivity Ultra-Wideband
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1

Hi,

Reading DW1001 Firmware API Guide

5.18 les
Show distances to ranging anchors and the position if location engine is enabled. Sending this command multiple times will turn on/off this functionality.
Example: dwm> les
1151[5.00,8.00,2.25]=6.48 0CA8[0.00,8.00,2.25]=6.51 111C[5.00,0.00,2.25]=3.18 1150[0.00,0.00,2.25]=3.16 le_us=2576 est[2.57,1.98,1.68,100]

5.19 lec
Show distances to ranging anchors and the position if location engine is enabled in CSV format. Sending this command multiple times will turn on/off this functionality.
Example: dwm> lec
DIST,4,AN0,1151,5.00,8.00,2.25,6.44,AN1,0CA8,0.00,8.00,2.25,6.50,AN2,111C,5.00,0.00,2.25,3.24,A N3,1150,0.00,0.00,2.25,3.19,POS,2.55,2.01,1.71,98

5.20 lep
Show position in CSV format. Sending this command multiple times will turn on/off this functionality.
Example: dwm> lep POS,2.57,2.00,1.67,97

But when execute the commands

dwm> les
dwm> [002839.360 INF] loc_data: 2
0) 82B8[-2.53,2.48,1.71,50,x85]
[i] 1) 9C85[-0.97,-0.59,0.34,50,x44]

dwm> lec[/i]
dwm> POS,0,9C85,-0.99,-0.55,0.26,50,xE5
[i]POS,1,82B8,-2.54,2.50,1.66,50,x26

[/i]dwm> lep
dwm> POS,0,82B8,-2.56,2.48,1.65,50,xC8
POS,1,9C85,-0.98,-0.54,0.30,50,x87

It seems that lec and lep responds the same

Best Regards,

Sergio

2

Hi Sergio,

Are you running LEC from an active tag or passive tag ?

You should get the distance to anchors when using LEC on an active tag.

Thank you,
Regards
Yves

3

Thank very much,

I was using a Listener (passive tag), if i use an active tag the response is:

dwm> les
[i]dwm> 05B7[0.00,0.00,0.00]=0.46 82B8[-3.00,3.00,0.00]=4.26 0F90[0.00,3.00,0.00]=3.35 C93B[-3.00,0.00,0.00]=3.15 le_us=2349 est[0.12,-0.16,0.23,100]

dwm> lec
[/i]
dwm> DIST,4,AN0,05B7,0.00,0.00,0.00,0.46,AN1,82B8,-3.00,3.00,0.00,4.05,AN2,0F90,0.00,3.00,0.00,3.34,AN3,C93B,-3.00,0.00,0.00,3.15,POS,-0.07,-0.04,0.350,100

dwm> lep
dwm> POS,-0.10,-0.23,0.36,100

Best Regards,

Sergio

4

Is there any command equivalent to les or lec or lep in SPI or UART Generic mode?

5

Hi Sergio,

Please take a look at the command dwm_loc_get. I would expect a similar behavior to les/lep if run on an active tag.

Thanks
Regards
Yves

6

Hi Sergio,

Please take a look at the command dwm_loc_get. I would expect a similar behavior to les/lep if run on an active tag.

Thanks
Regards
Yves

7

Thanks,

[color=#212121][size=medium][font=arial, sans-serif]Then to extract the positions of the tags through a passive node (listener) is not possible using SPI or Generic UART, only through the UART [/font][/size][/color][color=#212121][size=medium][font=arial, sans-serif]shell mode, right?[/font][/size][/color]

[color=#212121][size=medium][font=arial, sans-serif]Best Regards,[/font][/size][/color]

[color=#212121][size=medium][font=arial, sans-serif] Sergio[/font][/size][/color]