Is there a way to disable the SIM detection feature on WP7610

IoT Modules
1

Hi all,

We have currently wired up a SIM switch which is Normally open to the WP7610 which is expecting a normally closed SIM switch (oops). Is there a way to disable the SIM detection feature of the WP7610? I know that if I cut the trace to my SIM Detect pin on my switch the SIM will function properly but am hoping to avoid having to modify the PCB if possible and solve with an AT-command. Cutting the trace works because it basically is a no connect (as suggested by the Product Technical Spec if unused), so is there way to replicate this functionality with it still connected?

We are using External UIM1.

Any help would be appreciated.

Thanks,

Evan

2

have you checked the AT command +KSIMSEL

3

@jyijyi

I have checked the following:

AT+KSIMSEL?
+KSIMSEL: 1

AT!UIMS?
!UIMS: 0

AT!CUSTOM?
!CUSTOM:
GPSENABLE 0x01
GPSLPM 0x01
IPV6ENABLE 0x01
SIMHOTSWAPDIS 0x02
SIMLPM 0x01
USBSERIALENABLE 0x01
SINGLEAPNSWITCH 0x01
TXONINDICATION 0x01
HSICENABLE 0x01
SCRUBEN 0x01
EXTUIMSWITCHEN 0x01
EXTGPSLNAEN 0x01

OK

I needed to turn on EXTUIMSWITCHEN to set AT+KSIMSEL

From what is set above I was expecting it to work. It also appears that

4

probably you need to control GPIO6 from external circuit

5

Ah ok. Unfortunately our modem is soldered directly to the board so I don’t have access to that GPIO. I was hoping to just work around the existing hardware problem but appears that is not possible and I will have to come up with another solution.

Thanks for your help.