Compiler/TDA2EVM5777: Read Write in qspi memory

yash trivedi

Part Number: TDA2EVM5777

Tool/software: TI C/C++ Compiler

I have 10 mb of file which need to be read from qspi i am aware about the System_qspiReadSector System_qspiWriteSector api and i have taken example from the chains_common_rear_view_panorama.c to understand reading of lut file

first i have done followig

                UInt32 qSpiOffset;
                char *gDataBuf;
                UInt32 qspiBufHeader[SYSTEM_QSPI_READ_WRITE_SIZE];

                gDataBuf = Utils_memAlloc(
                             UTILS_HEAPID_DDR_CACHED_SR,
                             NETWORKCTRL_APP_IMAGE_FILE_SIZE,
                             32);

                     Vps_printf(" NETWORK_CTRL: Max file size that can be flashed to QSPI is %d B\n",NETWORKCTRL_APP_IMAGE_FILE_SIZE);

                       gDataBuf = "yash";

                             qSpiOffset = *((UInt32 *)gDataBuf);

                             System_qspiInit();

                             System_qspiWriteSector(qSpiOffset,(UInt32)(((UInt32 *)gDataBuf) + 1U),SYSTEM_QSPI_FLASH_BLOCK_SIZE);

                             System_qspiReadSector( (UInt32)qspiBufHeader,
                                                     qSpiOffset,
                                                       SystemUtils_align( qSpiOffset, SYSTEM_QSPI_READ_WRITE_SIZE));

                             Vps_printf("value of first index is %s \n",qspiBufHeader[1]);

                             Vps_printf(" QSPI Flash Complete !!!\n");

i have put above code into framecopy usecase and in that chains_vipSingleCameraFrameCopy_SetAppPrms function but when i make appimage and try to run it just got stuck

Questions:

1)how can i read write text file into qspi memory?

2)does any hardware change need to be done before writting into qspi?

over 7 years ago

0 Yordan Kamenov over 7 years ago

TI__Mastermind 42515 points

Hi,

I have forwarded your question to an expert for comment.

Regards,
Yordan

0 Rishabh Garg over 7 years ago

TI__Guru 55685 points

Hi Yash,

No hardware changes are needed before writing to QSPI. You can read/write any hex data in QSPI memory.
Can you refer to API NetworkCtrl_cmdHandlerQspiWrite in vision_sdk\apps\src\rtos\modules\network_ctrl\network_ctrl_handle_qspi_wr.c file and try.

Regards,
Rishabh

0 yash trivedi over 7 years ago in reply to Rishabh Garg

Prodigy 190 points

Thank you for your quick response that was really helpful.
we want to write 3 files at different offset i have given offset as address of Utils_memAlloc()
for single file it works fine.
how can i write different file at different offset in qspi?
I could not find any reference example regarding qspi write at different offset.

0 Rishabh Garg over 7 years ago in reply to yash trivedi

TI__Guru 55685 points

Hi Yash,

System_qspiWriteSector API takes QSPI offset as a parameter.
You can use this API to write at different offsets.

Regards,
Rishabh

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Compiler/TDA2EVM5777: Read Write in qspi memory