FLS_READ vs memcpy which one is better to use ?

sobo — Tue, 17 Mar 2026 14:56:12 GMT

Hi,

I use a S32K358 with RTD 4.00_P20

my question is about reading data in program flash memory .

Do I need to use Fls_read or can I only used a memcpy ?
what are the cons and pro

Thanks you

Re: FLS_READ vs memcpy which one is better to use ?

davidtosenovjan — Wed, 18 Mar 2026 10:45:35 GMT

Use normal reads (memcpy() or direct pointer access) when you just need to read data from program flash.
Use Mem_43_INFLS_Read() when:

Your project uses AUTOSAR MemIf / NvM / Fee
You need MemIf‑style asynchronous jobs and callbacks
You require AUTOSAR‑compliant memory access

If you are not using MemIf/NvM/Fee, then Mem_43_INFLS_Read() adds unnecessary overhead — normal reads are simpler and faster.