is it possible to copy data from flash to flash using fls_write ?

sobo — Mon, 13 Oct 2025 13:03:52 GMT

Hello,

I want to copy the data store in code flash to another place in code flash , is it possible or do I need to copy data in ram before ?

Fls_Write(AREA_1_LOGICAL_ADDR, (const uint8_t *)AREA_2_LOGICAL_ADDR, AREA_SIZE);

with AREA_1_LOGICAL_ADDR = 0x0
AREA_2_LOGICAL_ADDR = 0x100000
AREA_2_LOGICAL_ADDR = 0x10000

Flash configuration ok and done with EB tresos.

Sophie

Re: is it possible to copy data from flash to flash using fls_write ?

VaneB — Tue, 14 Oct 2025 17:11:16 GMT

Hi @sobo

S32K3 devices support the “Read-While-Write” (RWW) feature, which allows simultaneous read and write operations, but only when these operations occur in different flash blocks.

Direct flash memory access via pointers is not supported. Flash memory requires specific sequences for reading, writing, and erasing, which are managed by the PFlash controller. This controller enforces alignment rules and includes protection mechanisms that prevent direct access to the regions. Therefore, flash operations must be performed using the corresponding APIs, rather than raw pointer dereferencing.

BR, VaneB

topic Re: is it possible to copy data from flash to flash using fls_write ? in S32K

is it possible to copy data from flash to flash using fls_write ?

Re: is it possible to copy data from flash to flash using fls_write ?