DW1000 RX LED has not been on

Wireless Connectivity Ultra-Wideband
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1

I use 4 dw1000 as anchors,A0,A1,A2,A3. 8 dw1000 as tags,T0,T1,T2,T3,T4,T5,T6,T7.
All the Anchors and Tags download the same hex,trek1000.All of them working properly.
After about 48 hours, A1 and A2 's RX LED are not bright, the TX LED is always flashing.
The distance between Tags and A1,A2 are lost. which can trigger the RX event,why the
RX LED are not bright? :huh:

Thanks
optimisticgo

2

If the RX LED does not light up this means the anchors are not going into RX. Are you sure it is the TX LED that flashes? The RX is the lower one.

Either way if only one LED is flashing then the Anchor application is not working correctly any more. It may be stuck? Can you provide your RF settings, update rate etc… have you done other changes to the default SW? Will prob need to do further debug to see what the error might be. E.g. when in the stuck state - read 0xF, 0x19 registers to see which state the DW IC is in.

3

[color=#333333]Thank you for your response.[/color]
[color=#333333]I am sure that the TX LED is always flashing, the RX LED does not light up.[/color]
[color=#333333]I use Channel 2, 110kbps, superframe period is 4.2s (102815ms).[/color]
[color=#333333]When I power off the A1,A2,then power on, they works well.[/color]
[color=#333333]I debug A2,power off all of other anchors and tags, the A2 is loop in waiting for next event, the TX LED is [color=#333333]is always flashing,the RX LED does not light up.[/color][/color]
[color=#333333][color=#333333]Now I power [color=#333333]all of other anchors and tags[/color], the A2’s RX LED is flahing.[/color][/color]

[color=#333333][color=#333333]Thanks[/color][/color]

4

“the A2 is loop in waiting for next event” - what are the 0xf and 0x19 registers at this time?

5

Thank you for your response.
I use the function dwt_read32bitreg(0xf) and dwt_read32bitreg(0x19) to get the register values.
0xf register: 0x00800002
0x19 register: 40050500.
I read the dw1000_user_manual_2.1.3.pdf, found that rgister 0x19 is reserved, its descritpion is “System State information”,
register 0xf 's description is “System Event Status Register” , RXPREG (reg: 0F:04 bit :1) Receiver Preamble Rejection.