About ch23

ch23 · 2014-08-11

Posted on August 11, 2014 at 14:18Hi, I am reading a file from the SPI Flash with FATFS file system, on STM32F103 platform running FreeRTOS. I can successfully read File of size less the 2048, but if read a file file of size greater than 2048, (As i...

ch23 · 2014-08-13

Posted on August 14, 2014 at 05:43By setting the Sector Size and Allocation unit both to 4096 bytes, successfully read/write any amount of data. Thanks everyone.....

ch23 · 2014-08-13

Posted on August 13, 2014 at 11:14Yes, 4096 should be enough as allocation unit. I tested by setting AU (allocation unit ) to '0', in this case I can only read 2048 bytes from file. I am unable to understand why this AU value is affecting the readin...

ch23 · 2014-08-12

Posted on August 12, 2014 at 19:02Yes, they are 8 not 4. But it has no effect either.

ch23 · 2014-08-12

Posted on August 12, 2014 at 18:04 To me it look like issue is with f_mkfs () xRes = f_mkfs(0, SFD_FORMAT, 4096 ); Now I can read up to the value given in the f__mkfs allocation unit. I have tried value 32K instead of 4K. I can ...

ch23 · 2014-08-12

Posted on August 12, 2014 at 17:32Spi-Flash is of 4MB size. I have done raw read/writes. I can success Fully read/write all SPI flash addresses. Using FatFS, I have created file of more the 100K and when i check file size with f_size for that partic...

User statistics

User Activity

Unable to read file greater than 2K in FatFS ,stm32F103

Re: Unable to read file greater than 2K in FatFS ,stm32F103

Re: Unable to read file greater than 2K in FatFS ,stm32F103

Re: Unable to read file greater than 2K in FatFS ,stm32F103

Re: Unable to read file greater than 2K in FatFS ,stm32F103

Re: Unable to read file greater than 2K in FatFS ,stm32F103