PSM Mode NOT work when set AT+CPSMS=1,"","","10101010","00100001";

[Chris_]

Hi，all:

     I use 9160DK to test PSM mode as follow steps with at_client example：

    1、set ”AT+CFUN=0“  to power off mode;

    2、set "AT+CPSMS=1,"","","10101010","00100001""  to enter PSM mode;

    3、then set “AT+CFUN=1” to power on the mode；

    The problem comes here,As nrf91_at_commands_v1.2.pdf 7.3 written：“Configured values are stored in the non-volatile memory when the device is poweredoff with +CFUN=0.”,after I do the three steps, If I reset the nrf9160DK,and set "AT+CPSMS?" to query the mode，it should return ""+CPSMS: 1,,,"10101010","00100001"",but now it returns +CPSMS: 0;

    So,can anybody knows help me what's wrong here?

    Thank U all;

[Didrik Rokhaug]

Hi,

 

“Configured values are stored in the non-volatile memory when the device is poweredoff with +CFUN=0.”

 This is correct.

 

after I do the three steps, If I reset the nrf9160DK,and set "AT+CPSMS?" to query the mode，it should return ""+CPSMS: 1,,,"10101010","00100001"",but now it returns +CPSMS: 0;

 This is also the correct behavior.

The configured values are stored in non-voloatile memory when you send +CFUN=0, not when the modem is in "the +CFUN=0 state". If you send AT+CFUN=0 after you send AT+CPSMS=..., the value will be stored in flash.

Best regards,

Didrik

[Chris_]

Thx a lot，It's actually what u say，thank u