[SL8084T][OPAT]LLH error when uart_open

Legacy Open AT
1

[Application Type] Embedded Board
[Platform]
OPAT(2.52.0.201312091418)
Developer Studio 2.3.2(Build ver: 2.3.2.201310241753)
[Description]
When I open UART1 port by the uart_access sample application,
LLH error was occurred then can’t get local echo.
(Please see “bad trace”.)

Procedure is as follows.

  1. Run OPAT Application by +WOPEN=1
    2.Send +WMFM=0,0,1 to close UART1
    3.Send +WDU=1,115200
    *Never send the data from external host via UART.

2014/01/08;10:50:33:225;004;LLH;3;EVENT : ERROR 1c
2014/01/08;10:50:33:235;001;LLH;3;EVENT : ERROR c
2014/01/08;10:50:33:245;003;LLH;3;EVENT : ERROR 1c

I can’t find the meaning of these errors, sorry.

1.What do they mean?And, please tell us the reason why this error was occurred. 2.How to solve this error?

BTW, how can I know the meaning of LLH/HLH trace ?
I’d like to know the way to search it.

Thank you.
Bad trace.txt (745 Bytes)

2

Hiya,

Just a thought - have you got the Interrupt stack set up in your application?

Have a look in ‘generated.c’ or search your project for something similar to

adl_InitIRQLowLevelStackSize

Also, can you please post your Low Level Interrupt code (remember to use the Code tags to get the format right!).

ciao, Dave

3

Hiya,

If I’m right, the error means:

  • parity error
    -framing error
  • BREAK condition detected on the RXD pin

Certainly the uart is not correctly configured in your openat application: please try to review the open code.

thanks.