CC3100MODBOOST: _SlDrvRxHdrRead infinite loop

max sh.

Intellectual 765 points

Part Number: CC3100MODBOOST
Other Parts Discussed in Thread: CC3100, CC3200, CC3100SDK

Hi,

I use a host MCU connected to cc3100modboost via spi.

The MCU get the data from UART sensor and post it via http to the server.

i use CC3100SDK_1.2.0 and CC3100_CC3200_ServicePack_1.0.1.6-2.7.0.0

i have a strange behavior.

after few minutes of a good trannsmition the code of the MCU stuck in function :

static _SlReturnVal_t _SlDrvRxHdrRead(_u8 *pBuf, _u8 *pAlignSize)

while (SearchSync && TimeoutState)
    { 

      ...
    }

Any idea?

over 9 years ago

0 Shlomi Itzhak over 9 years ago

TI__Guru 66515 points

Hello,

It says that the synchronization between your MCU and the CC3100 is lost. Meaning, it is waiting for a sync pattern that is not arriving.

Can you please provide the following information:

what MCU are you using? what vendor? what speed? how many bits? little/big endian?
what SPI configuration? what is the speed? using DMA? size of word (1/2/4 bytes)?
do you have the option to record the SPI lines together with the IRQ line to the host?

Regards,

Shlomi

0 max sh. over 9 years ago in reply to Shlomi Itzhak

Intellectual 765 points

Hi,

1. The MCU is nRF52832 ,Nordic ,64MHz,32-bit ARM Cortex-M4F Processor.

2. The spi configured well, because the CC3100 was configured by the Host MCU and transmit a valid data for couple of hours .

3. The IRQ go to LOW and not triggered by the CC3100

Thanks.

0 Shlomi Itzhak over 9 years ago in reply to max sh.

TI__Guru 66515 points

Hello,

In this case, the only way is to capture the SPI lines together with IRQ line.

Best is to use Saleae.

Otherwise, it is not very easy/feasible to debug it.

Regards,

Shlomi

0 max sh. over 9 years ago in reply to Shlomi Itzhak

Intellectual 765 points

I don't have Saleae.

What it can be?Some idea?

0 Shlomi Itzhak over 9 years ago in reply to max sh.

TI__Guru 66515 points

Hello Maxim,

Without a proper SPI logic, it is just guessing. This is not the way to debug.

There are few threads you can look for that had this issue and the root cause varies. From what I can remember:

can be that the IRQ line suffers from cross talking (noise) which makes the line asserted. This false IRQ can cause the communication to get stuck
working in a single byte word on SPI can cause it to get stuck if the last byte is spread in time from the other bytes
other...

So getting SPI logic captures is really a must.

Regards,

Shlomi

0 Shlomi Itzhak over 9 years ago in reply to Shlomi Itzhak

TI__Guru 66515 points

Hello,

Any update on the post?

Regards,
Shlomi

0 max sh. over 9 years ago in reply to Shlomi Itzhak

Intellectual 765 points

Hi.

After i added an implementation of:

_u32 sl_Msp_GetTimestamp(void)

It was not happen yet.

0 Shlomi Itzhak over 9 years ago in reply to max sh.

TI__Guru 66515 points

Hello,

I am closing the thread for now.
If issue still exist or you have further related doubts please open a new thread and add a link to this one for reference.

Regards,
Shlomi

0 Wei Lu over 9 years ago in reply to max sh.

Expert 1900 points

Hi,

Can you where you add the line?

Thanks.

Wei Lu

Wi-Fi

Wi-Fi forum

CC3100MODBOOST: _SlDrvRxHdrRead infinite loop