gsmd can't pass pressure testing

[sean_chiang@…]

Doing pressure testing, and gsmd would fail under some test case.
I have 4 simple test case, they are:

Q.txt - send AT+CSQ 50 times Both x86 and gta01 are OK
n.txt - send AT+CNUM 50 times Only OK on x86
p.txt - send AT+COPS? 50 times Only OK on x86
sm.txt - send AT+CPMS 71 times Only OK on x86
h.txt - send ATH 100 times Both x86 and gta01 are OK

Fail means gamd will not send at command to GSM modem anymore, which is still
alive.

using libgsmd-tool -m shell < file to do simple pressure testing.

[sean_chiang@…]

pressure testing test cases

[sean_chiang@…]

pressure testing test cases

[sean_chiang@…]

AT+CSQ

[sean_chiang@…]

AT+CNUM

[sean_chiang@…]

AT+COPS?

[sean_chiang@…]

AT+CPMS

[sean_chiang@…]

ATH

[erin_yueh@…]

i tried CSQ, COPS, CPMS, these three are fine. But i got cme error 512 from CNUM.

[mickey@…]

Is it CME or CMS 512? CME 512 is nowhere defined. CMS 512 seems to be a vendor
specific code. I guess that's the Calypso way of saying "not implemented".

[sean_chiang@…]

I'm sure it is "+CME ERROR 512", and TI had implemented +CNUM indeed. I guess a
special command sequence will make TI GSM modem fall into crazy..

[sean_chiang@…]

HI!list, This time to send a lots AT+CNUM to do pressure testing. I print what
we read in atcmd_select_cb()

...
Fri Jan 25 15:59:15 2008 <1> atcmd.c:491:atcmd_select_cb() len : 17

Fri Jan 25 15:59:15 2008 <1> atcmd.c:501:atcmd_select_cb() rxbuf :
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0xd(^{M)
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0x0(}@)
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0xa()
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0x2b(+)
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0x43(C)
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0x4d(M)
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0x45(E)
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0x20( )
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0x45(E)
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0x52(R)
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0x52(R)
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0x4f(O)
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0x52(R)
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0x3a(:)
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0x20( )
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0x32(2)
Fri Jan 25 15:59:15 2008 <1> atcmd.c:503:atcmd_select_cb() 0x32(2)
Fri Jan 25 15:59:15 2008 <1> atcmd.c:491:atcmd_select_cb() len : -1
...

Now, the problem is there's a terminated character inserted in the return
response. So this response will be ignored and the busy command will always
waiting the response. The n more and more at command will be blocked in pending
queue.

BTW, it only happens on GATA01, I had test it on GTA02, no problem. So I guess
maybe it's because hardware problem or uart driver cause that.

[mickey@…]

Excellent. Sean. We need more of these tests. There may be an undiscovered
problem in the s3c serial driver. cc'ing andy.

[andy@…]

Hi folks -- one thing to be careful about, I saw crazy behaviour after
powering GSM modem on two A4s including device shutdown. Holding the serial
port open while trying to suspend destroyed resume as well. Then I added a
battery into my device, and although the GSM module remained dead on those
A4s, the crazy behaviour went away. So make sure to try these tests with a
battery in if you didn't already, in case that is anything to do with it.

If there are additional "characters", they could be from some PSU noise maybe
associated with (but evidently not triggering) the device shutdown behaviour I
was seeing?

[mickey@…]

This needs to be reproduced in MUXing mode. Since gsmd is phasing out, we better
test this with the framework-testing image (due to release early June).

[john_lee]

mickey, shall we close this one and test it on frameworkd?

[mickey]

Agreed. Further wrt. GSM pressure testing should be done using the frameworkd. Closing this here. gsmd is gone for good.