CCS/EVMK2H: EVMK2H Power Failure when setting GPIO

Hi,Yordan:

Thanks for reply.I don't think that I modify something on our code.Because I don't excute "  *(volatile Uint32 *)( CSL_GPIO_CFG_REGS + SET_DATA ) = 0xf0;//pull  up GPIO[4:7]"

The system is ok .Everything is running ok

I actually modify K2H EVM,I adding a 27PF capacitance in GPIO0 for reduce noise

Processor SDK RTOS  version is  ti-processor-sdk-rtos-k2hk-evm-04.01.00.06-Windows-x86

I don't use any GPIO example.I pull up and pull down GPIO for sending data to FPGA .

And I thought that control  several  GPIOs  would not make  system stop.

 Best Regards, 
 Jacky.

I also remove R18 ,and adding VCC3.3V to EN pin in tps54620 IC on K2H EVM board ,so to keep VCC5 stable.

Best Regards

Jacky

I remove the FPGA form CN3.Let EVM work alone.

And I find other two more unmodified EVM boards to try the same code .

It still has this problem .EVM still power fail and CCS still tell me that power fail.

I try keystone II GPIO sample code ,but adding the code I mentioned ,System always stop when execute "*(volatile Uint32 *)( CSL_GPIO_CFG_REGS + SET_DATA ) = 0xf0;"

while(1)

{
    *(volatile Uint32 *)( CSL_GPIO_CFG_REGS + CLR_DATA ) = 0xffff0ff0;//clear  GPIO[16:31]  and  GPIO[4:11]
    *(volatile Uint32 *)( CSL_GPIO_CFG_REGS + DIR ) = 0xffff0001;//set  GPIO[16:31] and  GPIO0  to input，others GPIO to output

   TSC_delay_ms(1);

    *(volatile Uint32 *)( CSL_GPIO_CFG_REGS + SET_DATA ) = 0xf0;//pull  up GPIO[4:7]

}

Please help me to check what is going on in EVM.Thank you very much

Best Regards

Jacky

Hi Jacky,

Is it possible to attach your full GPIO test project, so I can try on my side?

Best Regards,
Yordan

Hi,Yordan

If you can try my code ,I will appreciate that.

Here is my test code .

Thanks .And Merry Christmas!

Best Regards.

Jacky

https://e2e.ti.com/cfs-file/__key/communityserver-discussions-components-files/791/GPIO_5F00_test.7z

Would you have any idea about which incorrect memory I might wirte to ?

Jacky,

Why have you purchased such a large number of K2H EVMs?  Are they all for the same development project?

I presume that you are attaching another circuit to the expansion connector that will be controlled by GPIO pins.  Can you provide details for the connected circuitry and which pins will be used?

Tom

Hi Rahul,

I check my EVM UCD firmware and update the firmware again .

It still got the problem.

LCD still display "SOC requested shutdown " You could see the picture I post at the begin .

Does  TI  have  other firmware to fix this issue?

Best Regards

Jacky

Jacky,

Please be aware that the K2H EVM is designed for evaluation use in a development / lab environment.  It is not designed for use in a production environment. This is stated at the beginning of the Technical reference Manual.  We want to be sure that you have the proper expectations.

Tom

Jacky,

Do you still see the problem when running the code on an EVM that is not attached to an FPGA (or any other circuitry).  We need to understand if this is a design issue in the standalone EVM or if there is some type of physical issue with the combined setup.

Tom

Hi  Yordan,

Excuse me,  does the design team has any solution or suggestion on this issue after  several days pass?

Best Regards,

Jacky 

Jacky,

We are looking into it.  Please be patient.  The code running in the BMC that controls the power supplies and interacts with the GPIO expanders that connect to the GPIO pins has not been touched for several years and we are working to identify someone who can dig into this.

Tom

Jacky,

We had a discussion with software team members that are familiar with the BMC implementation on the K2H EVM.  They are currently looking into various solutions.  We expect to have something to discuss with you by the end of the week.

Tom