SWD Programming Can't Write Stack Pointer

tialin — Fri, 06 Jul 2018 16:40:00 GMT

Hi all,

I am trying to use a microcontroller(KL16) to program another microcontroller (KL02) via SWD.

I followed AN4835. after successfully mass erase the KL02. The program also seems to works fine with nether Flash Access Error Flag nor Flash Read Collision Error Flag.

The FTFA cmd I used was Program Longword

After the programming finished I try to read back and verify. Everything matched up but the following 3 register.

0x0000_0000 0 — — ARM core Initial stack pointer

0x0000_0004 1 — — ARM core Initial program counter

0x0000_0008 2 — — ARM core Non-maskable interrupt (NMI) .

They all read 0xFFFFFFFF.

Thanks!

Tia

Re: SWD Programming Can't Write Stack Pointer

kerryzhou — Mon, 16 Jul 2018 09:29:52 GMT

Hi Tia Lin,

Do you mean, except the front 3 32bits can't be programmed, other flash address are all can be programmed?

Could you share some code about controlled the SWD interface to program the external flash with me? I need to check it at first.

Besides, please also post some debug result, include the unsuccessful readout and the successful result.

Have a great day,
Kerry

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Kinetis MicrocontrollersのトピックSWD Programming Can't Write Stack Pointer

SWD Programming Can't Write Stack Pointer

Re: SWD Programming Can't Write Stack Pointer