CC3235MODASF: Strange disconnection

Mauro Fantina

Genius 3800 points

Part Number: CC3235MODASF

Hello.

I write a code that configure my SimpleLink as P2P Client.

Then my code transmit TCP data.

The code work OK .... but sometimes I have disconnection.

I capture the problem with WireShark

UTHW9.local is my Windows 10 PC, RDGxxxx.local is my SimpleLink.

On this screen-shot I see that my PC try to send a packet ... but SimpleLink seems not to receive it ... so my PC retry to transmit this packet more times

and PC decides to send ARP packet to request who has 102.168.137.31 (is the SimpleLink) but it has no answer ....

On my SimpleLink device I experience SL_WLAN_EVENT_P2P_DISCONNECT event ...

over 5 years ago

0 Kobi Leibovitch over 5 years ago

TI__Guru 63006 points

What is the reason code in the SL_WLAN_EVENT_P2P_DISCONNECT?

0 Mauro Fantina over 5 years ago in reply to Kobi Leibovitch

Genius 3800 points

Good...question

If I remember correctly was SL_WLAN_DISCONNECT_ROAMING_TRIGGER_BSS_LOSS

0 Kobi Leibovitch over 5 years ago in reply to Mauro Fantina

TI__Guru 63006 points

If the CC3235 is in idle, this means there was a beacon loss (i.e. the device couldn't receive a beacons from the PC in a long time).

If the CC3235 also tried to send something, a missing ack (from the PC) would also lead to this event.

We need to see an air sniffer log to further analyze this.

You can also try to get an NWP log for collecting some more info on the issue - see instructions in chapter 20.1 in the programmer's guide (https://www.ti.com/lit/pdf/swru455)

br,

Kobi

0 Mauro Fantina over 5 years ago in reply to Kobi Leibovitch

Genius 3800 points

OK ... I have captured Two Logs.

1. In this LOG I obtain ROAMING_TRIGGER_BSS_LOSS some seconds after properly WiFi Direct connection

5751.teraterm.log

2. In this other LOG I establish Connection, exchange a lot of packets and after about 1 hour I obtain ROAMING_TRIGGER_BSS_LOSS

6052.teraterm2.log

0 Kobi Leibovitch over 5 years ago in reply to Mauro Fantina

TI__Guru 63006 points

What SP are you using?

I'm not able to parse the logs currently.

0 Mauro Fantina over 5 years ago in reply to Kobi Leibovitch

Genius 3800 points

I'm connecting to P62 on my demo board (GPIO_07)

I include this in my code

#include <ti/devices/cc32xx/inc/hw_types.h>
#include <ti/devices/cc32xx/driverlib/rom_map.h>
#include <ti/devices/cc32xx/driverlib/pin.h>
#include <ti/devices/cc32xx/driverlib/prcm.h>

and I call this in my code

    /* Capture NWP Logs */

    // If your application already has UART0 configured, no need for this line
    MAP_PRCMPeripheralClkEnable(PRCM_UARTA0, PRCM_RUN_MODE_CLK);
    // Mux Pin 62 to mode 1 for outputting NWP logs
    MAP_PinTypeUART(PIN_62, PIN_MODE_1);

I use US232R-10-BULK as RS232/USB converter

0 Kobi Leibovitch over 5 years ago in reply to Mauro Fantina

TI__Guru 63006 points

what was the baudrate when you captured the data?

Also what was the service pack used?

The streams seems corrupted but i'm still trying to verify this.

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CC3235MODASF: Strange disconnection