topic Re: Getting Error while reading from Nand Flash of TWRK70f120M in Kinetis Microcontrollers

Getting Error while reading from Nand Flash of TWRK70f120M

snehahegde — Wed, 25 Jun 2014 03:52:03 GMT

Hi Team,

I am able to write data into the NAND Flash of TWRK70F120M. But when I try executing the Read from Flash function, the control gets stuck at a point in the boot file. The screenshot of the error has been attached. However, I am able to check the data that is read using the breakpoint which is same as the data written. Kindly suggest how can this problem be resolved.

Thanks and Regards,

Sneha Hegde

Re: Getting Error while reading from Nand Flash of TWRK70f120M

Hui_Ma — Thu, 26 Jun 2014 03:35:30 GMT

Hi Sneha,

Please try to download K70 baremetal project for NAND demo from below link [nfc] demo:
KINETIS_120MHZ_SC : Kinetis 120MHz bare metal sample code.
K70_120: Kinetis K70 Graphic LCD 120/150 MHz MCUs

Please check if there with hardware issue.

If it works, then there focus on MQX NAND software code.

Wish it helps.

Best regards,

Ma Hui

Re: Getting Error while reading from Nand Flash of TWRK70f120M

snehahegde — Fri, 27 Jun 2014 05:32:49 GMT

Hi Team,

Thanks for the reply. The error has been resolved, but another error seem to have popped up. PFB the code for Read from Flash :

void CFlashMemory :: ReadFromFlash()

{

if(!OpenFlashMemory()) //Function to open the Flash Memory

return;

//Reading System Parameters

DWORD Location=0;

CSystemSetting* ptrSystemSetting=NULL;

ptrSystemSetting=m_argpDataMgr->GetSystemSettingPtr();

if(ptrSystemSetting!=NULL)

{

fseek(mpFlashPtr,Location,IO_SEEK_SET);

read(mpFlashPtr,ptrSystemSetting,sizeof(CSystemSetting));

m_argpDataMgr->SetSystemSetting(ptrSystemSetting);

}

fclose(mpFlashPtr);

}

CSystemSetting is a class which has got various parameters which I need to save into flash. m_argpDataMgr is an object of a class DataMgr which is member variable of the Flash class. First all the System Setting Parameters are stored into Data Mgr and then loaded into Flash.I am able to see the data getting read by using breakpoints, but my screen hangs after the Read function is executed. Kindly let me know how this issue can be resolved.

Thanks and Regards,

Sneha Hegde

Re: Getting Error while reading from Nand Flash of TWRK70f120M

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