problem with UART2

Legacy General
1

Hi ppl! The problem is - i can’t activate UART2 in my Q2687. I sent at+wmfm=0,1,2 and the answer is ERROR, without any error code. When I send at+wmfm?
the answer is
+WMFM: 0,2,1,1
+WMFM: 0,2,2,1
+WMFM: 0,2,3,0
+WMFM: 1,2,4,0
+WMFM: 1,2,4,1
Why there is no any values with +WMFM: 0,1,, ? Help me plz, if u can…

2

Did you issue AT+CMEE=1 to request the additional error codes…?

3

“Did you issue AT+CMEE=1 to request the additional error codes…?”
Thanks! Now the modem sends the answer - CME ROOR 3. Why this Operation not allowed?

4

maybe because UART2 is already active. This is indicated by +WMFM: 0,2,2,1. If the UART2 is not active the result should be +WMFM: 0,2,2,0.

5

The result is +WMFM: 0,2,2,1. But, when I send at+wmfm=0,0,2 the result is +CME ERROR: 3 why i can’t close UART2 if it’s already active?

6

There is something strange - when i send at+wopen=0, and after that i send at+wmfm=0,1,2 - it works, and at+wmfm=0,0,2 works too. It seems like this command don’t works when the OAT application started…
P.S. I do nothing with UART2 in my application…
Please help me to solve my problem…

7

Maybe UART2 use some GPIO — please take a look into the manual or data sheet of your module. If you use these ports in your application activation of the uart fails …

8

I have exactly the same problem. I have observed the following. Note that this used to work with firmware 6.63c but no longer works with R71b.

  1. After starting my application I can open and close UART 2 using AT+WMFM=0,1,2 and AT=WMFM=0,0,2
  2. However once I subscribe to the UART2 port - I can no longer use these commands either manually or in a program using the function
    adl_atCmdCreate(OPEN_UART2_PORT,ADL_AT_PORT_TYPE(ADL_PORT_UART1,FALSE), _WMFM_Handler,"*",NULL).

Why this is I haven’t a clue

And I agree with kban that if i stop the application then these commands can be issued.

9

Actually, that sounds like perfectly reasonable behaviour to me!

If your application has subscribed the UART, it is effectively “using” it - so I would expect that to prevent other commands from closing it, surely?

As a test, if your application unsubscribes the UART, can you then use those commands?

10

Therefore, it is not exactly the same problem, is it?

Unless there’s something that kban isn’t telling us…

11

Hi,

I had this problem too. It can be solved by redownloading the wpb.dwl file.

12

Sorry I meant to say w.dwl file.