BC660K-GL Does not enter deep sleep

Technical Subjects
1

Hi
I have a BC660K which enters PSM sleep but does not enter deep sleep and continues drawing 110uA
I do get +QNBIOTEVENT: “ENTER PSM”
Have confirmed +QSCLK: 1

2

We had a couple of those modules with a similar issue. Upgrading the firmware to R01A05_01.002.01.002 resolved that (maybe there are newer releases since that one though).

N.B. I assume you already set AT+QCFG=“dsevent”, so that at least you get to see the DEEPSLEEP event URC?

N.B. 2 And bear in mind that any devices that are attached to the PCB e.g. a programmer might also influence the current consumption that is shown.

3

Please confirm that the PSM_EINT pin conforms to the reference design we provided

4

Thanks for your reply
I am testing on the BC660K-GL-TE-B development board.
The PSM_EINT pin appears to be floating at 1.25V. Pulling it to 3.3V makes no difference
+QCFG: “dsevent”,1 is set. I have not seen any DEEPSLEEP event URC
Current firmware revision is BC660KGLAAR01A04. May I have the latest firmware to see if that fixes the issue?

5

you run

AT+CFUN=0
AT+QSCLK=1
AT+QCFG=“dsevent”,1

You see if it can go to deepsleep?

6

AT+CFUN=0 allowed it to enter deep sleep
but this disconnects from the network. Is it not possible to deep sleep and stay connected?

7

Quectel_EPAT操作指导与参考(CN&EN)_BC260Y&BC660K&BC28F&BC95GF&BC300Y.pdf (2.1 MB)
If conditions permit, please provide debug log for analysis in networking conditions

8

Yes that is possible.

For firmware, it might be quicker to send an email to support@quectel.com

9

The forum does not let me upload log file attachment. Where should I email it?
“Sorry, new users can not upload attachments.”

10

pls send it to my email,herbert.pan@quectel.com

11

I have received your Log, can you provide the picture of your debug board?

12

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Please remove the connected DuPont cable and debug via USB only

14

Sent email with log with cables removed, same issue

15

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Is the tx/rx of the module controlled by the mcu? If so, disconnect the mcu first and manually send AT Commands to debug and try

16

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When you asked I disconnected all cables and set TX/RX and power back to USB.

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Have you added welding operations to TE-B?

18

Yes, at one point I removed R112 R113 because I wanted to connect UART direct from MCU to BC660K and thought the voltage level translator might interfere. Afterwards I reconnected them.
I have another BC660K-GL-TE-B with no modifications and it has the same sleep issue.

19

pls Use the new TE-B to grab the Log again

20

Can you provide picture of your new TE-B？