S32K中的主题 Re: Can S32K3 Flash memory operation be changed to asynchronous operation

Can S32K3 Flash memory operation be changed to asynchronous operation

xudequn — Mon, 30 Oct 2023 05:17:56 GMT

I find the operation of flash memory is synchronous in AN13388. Can I change it to asynchronous?

The sample code in AN13388 is followed.

I don't want to wait for the MCRS[DONE].

Thank you.

tFLASH_STATUS FLASH_ExecSeq (register uint32_t mask)
{
register tFLASH_STATUS status;
FLASH->MCR |= mask; /* initiate sequence */
FLASH->MCR |= FLASH_MCR_EHV_MASK; /* enable high voltage */
while(!(FLASH->MCRS&FLASH_MCRS_DONE_MASK)); /* wait until MCRS[DONE]=1 */
FLASH->MCR &=~FLASH_MCR_EHV_MASK; /* disable high voltage */
status = FLASH_GetStatus(); /* read main interface status */
FLASH->MCR &=~mask; /* close sequence */
return status;
}

Re: Can S32K3 Flash memory operation be changed to asynchronous operation

davidtosenovjan — Mon, 30 Oct 2023 18:06:17 GMT

MCRS[DONE] flag can be used for generating interrupt, so it can be used ansynchornously.

Ideally you could used FLS driver (part of RTD drivers pack) and it this driver works asynchronously by the default.

Re: Can S32K3 Flash memory operation be changed to asynchronous operation

xudequn — Tue, 31 Oct 2023 01:37:43 GMT

Thanks a lot.

And can I use a polling way to make it ansynchornous?

For example, I don't wait for the MCRS[DONE] in FLASH_ExecSeq, I just check the MCRS in main loop until the MCRS is done.

Re: Can S32K3 Flash memory operation be changed to asynchronous operation

davidtosenovjan — Thu, 02 Nov 2023 13:39:41 GMT

It is basically up to you - you can do it this way.