MK12DX128xxx5 flash write problem

martinzhang — Wed, 21 Mar 2018 08:22:20 GMT

Hello,

I am working with MK12DX128xxx5 flash programming, I have no MK12DX128xxx5 flash driver in hand so I use the flash drive which works well in MK10DX128xxx5. The complier is IAR Embedded Workbench for ARM 7.40.2.8570. The C/C++ Compiler Optimizations setting is High (Size). If I set some function optimize=none then the flash write data function works well, but it cannot work correctly if I remove one or two optimize=none. I checked running status of write flash function, it can write correct 1 byte and return the error of flash read collision.

My question is:

Why the problem is related to the optimize setting?
The MK10DX128xxx5 flash driver can be used for MK12DX128xxx5?

Somebody can post MK12DX128xxx5 flash write code?

Thank you very much!

Martin

Re: MK12DX128xxx5 flash write problem

Hui_Ma — Thu, 22 Mar 2018 02:03:06 GMT

Hi,

Have you tried the MCUXpresso SDK software Flash driver for MK12DX128xxx5 chip?

I would recommend customer try with MCUXpresso SDK software package for MK12DX128xxx5 chip.

Please check if that Flash driver demo also has the same issue about IAR compiler optimize setting.

The flash driver difference between MK10DX128xxx5 and MK12DX128xxx5 is very tiny. The most Flash commands are same. While, I still recommend customer use MCUXpresso SDK flash driver for MK12DX128xxx5 chip.

Wish it helps.

Have a great day,
Mike

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