S32KのトピックRe: program partition command

program partition command

814420552 — Tue, 18 Aug 2020 08:01:11 GMT

hello,

in manual reference i found rhe following description, it means call the partiton command can't run in Flash, thus means it must execute this command in SRAM. is my understanding right?

if so. why i can execute partition command in Flash code and partition is also successful?

thanks in advance!

Re: program partition command

danielmartynek — Tue, 18 Aug 2020 15:17:56 GMT

Hello 814420552@qq.com,

Yes, it must be in SRAM.

Are you sure the code that launches the command is in the flash?

The SDK Flash driver has the FLASH_DRV_CommandSequence() that clears CCIF in an SRAM section.

Regards,

Daniel

Re: program partition command

814420552 — Fri, 21 Aug 2020 01:16:29 GMT

hello Daniel,

I run the following code

and debug option as the following

above operation also can partition successly? code run in flash but it's not in SRAM!

I don't know why? Can you help me?

Re: program partition command

danielmartynek — Fri, 21 Aug 2020 07:29:38 GMT

Hello kui wu,

Although the DEFlashPartition() fucntion is in PFlash, CommandSequence() function that launches the command is in SRAM.

Regards,

Daniel

Re: program partition command

814420552 — Sun, 23 Aug 2020 03:25:53 GMT

Dear Daniel，

it seems that all the Flash command will call function CommandSequence() , but I guess the reason why this function put in RAM is for speedup， except for this, what's the other reason?

Re: program partition command

danielmartynek — Mon, 24 Aug 2020 07:58:15 GMT

Hello 814420552@qq.com,

The CommandSequence() function must not be in the flash block (or partition) that is being modified by the command.

The function is in SRAM to avoid that.

Regards,

Daniel