Filesystem in RTEMS

[Sebastian Huber]

On 23/10/17 11:33, xuelin.tian at qkmtech.com wrote:
> static int flash_write(
>     rtems_jffs2_flash_control *super,
>     uint32_t offset,
>     unsigned char *buffer,
>     size_t length) {
>
>     flash_control *self = get_flash_control(super);
>     XQspiPs *flash_handle = self->flash_instance;
>     uint32_t num = length / S25FL256S_PAGE_SIZE;
>     uint32_t remaining = length % S25FL256S_PAGE_SIZE;
>     uint32_t written;
>
>     for (written = 0; written < num; written++) {
>         FlashWrite(flash_handle, beginning + written*S25FL256S_PAGE_SIZE, \
>             S25FL256S_PAGE_SIZE, WRITE_CMD, \
>             buffer + written*S25FL256S_PAGE_SIZE);
>     }
>     if (remaining) {
>         FlashWrite(flash_handle, beginning + num*S25FL256S_PAGE_SIZE, \
>             remaining, WRITE_CMD, buffer + num*S25FL256S_PAGE_SIZE);
>     }
>     return S25FL256S_SUCCESS;
> }
>
> where, my FlashRead and FlashWrite functions will invoke the functions 
> defined in Xilinx BSP to transfer data from/into flash.
>
> I do not know where the problem is...

You assume length % S25FL256S_PAGE_SIZE == 0.

-- 
Sebastian Huber, embedded brains GmbH

Address : Dornierstr. 4, D-82178 Puchheim, Germany
Phone   : +49 89 189 47 41-16
Fax     : +49 89 189 47 41-09
E-Mail  : sebastian.huber at embedded-brains.de
PGP     : Public key available on request.

Diese Nachricht ist keine geschäftliche Mitteilung im Sinne des EHUG.