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LPS Node can't light up
Posted: Wed Sep 21, 2016 7:25 am
by gwiily
hi,all
I Successfully configured the LPS Node，but the only light on power and mode. The ranging,sync,rx,tx,sfd,rxok are all no light.And the RV are no response. I don't know where the problem is.
thank u very much.
Re: LPS Node can't light up
Posted: Wed Sep 21, 2016 7:53 am
by arnaud
Hi Gwiily,
At startup all LED should blink, is that happening?
When you connect with USB on your PC, does your node pass all the tests?
Re: LPS Node can't light up
Posted: Wed Sep 21, 2016 12:37 pm
by gwiily
arnaud wrote:Hi Gwiily,
At startup all LED should blink, is that happening?
When you connect with USB on your PC, does your node pass all the tests?
Hi arnaud,
Before I suffered a "wrong chip id", like
this，the code is
this,I change it to zero in the brackets，like
Code: Select all
if (0) {
return DW_ERROR_WRONG_ID;
}
,and it pass the test. But now become this problem.
and the in the deck, it also doesn't work, so I check this
topic ,change the config.mk, and the deck is worked,but only tx,rx,sfd are blinking,I don't know it means work normal?
Thank u very much~
Re: LPS Node can't light up
Posted: Wed Sep 21, 2016 1:36 pm
by arnaud
This is normal that it is not working: the line you disabled is basically checking if the SPI connection is working. If you have to disable this check the SPI connection is not working properly and so this explains why the radio is not working at all. Are you still working with your own made node?
As for the node, I have one in front of me that does what you describe, RX/TX are blinking all the time and sometime SFD blinks. This is the normal behavior if you do not have a node ON: RX/TX indicate the receive and transmit state, the crazyflie will transmit and try to receive packet to range. SFD is preamble detection and it happens that the DW1000 detects preamble out of noise. RXOK is blinking when a packet is received properly, if you do not have any node active it is normal that RXOK is not blinking.
Re: LPS Node can't light up
Posted: Thu Sep 22, 2016 12:26 am
by justinleeyang
Hi,
You must get right Decawave ID, then more test. I guess that your Hardware SPI interface have some problem.
Re: LPS Node can't light up
Posted: Thu Sep 22, 2016 1:58 am
by gwiily
justinleeyang wrote:Hi,
You must get right Decawave ID, then more test. I guess that your Hardware SPI interface have some problem.
arnaud wrote:This is normal that it is not working: the line you disabled is basically checking if the SPI connection is working. If you have to disable this check the SPI connection is not working properly and so this explains why the radio is not working at all. Are you still working with your own made node?
As for the node, I have one in front of me that does what you describe, RX/TX are blinking all the time and sometime SFD blinks. This is the normal behavior if you do not have a node ON: RX/TX indicate the receive and transmit state, the crazyflie will transmit and try to receive packet to range. SFD is preamble detection and it happens that the DW1000 detects preamble out of noise. RXOK is blinking when a packet is received properly, if you do not have any node active it is normal that RXOK is not blinking.
Thanks all, I fond the problem that I made the wrong SPI interface. Thanks for your patience to answer questions～