Unexpected system reset(may caused with spi and twi conflict)

RE: Unexpected system reset(may caused with spi and twi conflict)

cnchen — Wed, 13 Jan 2016 23:29:07 GMT

Hi nimalhuang, This is also a very good suggestion and I do see sometimes the lack of memory space would cause such unwanted system reset. Though its not my case, still appreciate for the quick reply! Thank you!

RE: Unexpected system reset(may caused with spi and twi conflict)

cnchen — Wed, 13 Jan 2016 23:27:10 GMT

Hi Wojtek, Thanks for the reply! I instrumented debugging tool to my program to investigate the code and realized that actually I forgot to properly initialize SPI master module. After correct initialization, both SPI and TWI are running perfectly now!

RE: Unexpected system reset(may caused with spi and twi conflict)

nimalhuang — Wed, 13 Jan 2016 10:52:22 GMT

Hi, cnchen,

I figured out the issue. The reset issue is not caused by TWI0 and SPI1 incompatible. But due to flash storage shortage. The code size of our system is a little big. So it reach the boundary of the total 256kb flash memory. After optimize the code and decrease the code size the system works fine. I know this is really a specific case for me. I am not sure if you have the same root cause. But might be a way of solution. Just for your information. Thanks.

RE: Unexpected system reset(may caused with spi and twi conflict)

Wojtek — Wed, 13 Jan 2016 10:42:14 GMT

could you set breakpoint in hardfault (or in your error handler that causes reset) and check call stack? you will see which function causes this problem.

RE: Unexpected system reset(may caused with spi and twi conflict)

cnchen — Wed, 13 Jan 2016 10:31:15 GMT

Hi,

I'm encountering exactly the same issue where TWI0 and SPI1 seem to be incompatible with each other.

The attempt of using both hardware modules above always triggers an unexpected system reset.

Did you figure out the root cause or the workaround yet?

RE: Unexpected system reset(may caused with spi and twi conflict)

nimalhuang — Tue, 10 Mar 2015 03:12:06 GMT

yeah, I know, but when I disable one of these, that's worked, really wired? Do you have some suggestion?

RE: Unexpected system reset(may caused with spi and twi conflict)

RK — Tue, 10 Mar 2015 02:52:58 GMT

SPI0 and TWI1 can most definitely co-exist. I use that combination. Whatever your problem is, that's not it.