FX3S-Fatfs File Copy Issues

rasu_4591691 · ‎Dec 12, 2019

Hi,

I am using PACTRON'S FX3S FPGA Dev Board REV-C. It has two storage port. I used to copy the file from one sd card to another sd card (both are ex fat sd card) using Fatfs file system. To copy the 512mb file from sd0 to sd1 it will take a time of 2 minutes 6 seconds. I am using 32KB buffer for FATFS read/write buffer. I need to improve Maximum Speed and to decrease the time.

How can I reduce the time duration of copying the file?

Thanks & Regards

S.Ravi Chandrika

YashwantK_46 · ‎Dec 25, 2019

Hi Ravi Chandrika,

I went through the firmware you provided in the thread: SUBJECT: FX3S – SD Card Copy

I understand that you are writing and reading the data in chunks of 32KB using the f_read and f_write functions.

So, could you try and change the size of the buffer variable in the f_read and f_write functions in increments of 1KB and see if it makes any difference and share your findings?

There are limitations with the use of these functions f_read and f_write as they need to make calls to the disk read/ writes through the driver which degrades the throughput.

Regards,

Yashwant

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FX3S-Fatfs File Copy Issues

FX3S-Fatfs File Copy Issues

Re: FX3S-Fatfs File Copy Issues