topic Re: KW36 dflash can not read? in Kinetis Microcontrollers

KW36 dflash can not read?

jictannu — Mon, 20 Apr 2020 07:11:43 GMT

I try to read dflash by jflash, but I got:

How can I get the state of the dflash? Is it in read protection?

I find this in Reference Manual：

Is there any API for Flash Read protection?

Re: KW36 dflash can not read?

mario_castaneda — Thu, 23 Apr 2020 03:42:24 GMT

Hi,

Remember that the KW36 provides 256 KB FlexNVM. So, I am not sure if you modify the partition memory but, you have to be sure that the device has not set the EEPROM feature and the whole FlexNVM can serve as a basic data flash.

Address range starting from 0x1000 0000 to 0x1003 FFFF, D-flash also has an alias starting from address 0x0004 0000

https://www.nxp.com/docs/en/reference-manual/MKW36A512RM.pdf

Please look at the figure 4-22

Regards,

Mario

Re: KW36 dflash can not read?

jictannu — Thu, 23 Apr 2020 07:47:38 GMT

Hi, Mario. How can I know my D-flash start at 0x1000 0000 or 0x0004 0000?

Re: KW36 dflash can not read?

mario_castaneda — Thu, 23 Apr 2020 14:17:02 GMT

Hi,

If you are referring to at the address 0x1000 0000 or 0x0004 0000, it is the same. You have to be sure that you do not have partitioned the FlexNVM.

Please look at the driver example that we provide.

"C:\SDKs\kw36\boards\frdmkw36\driver_examples\flash\flexnvm_dflash"

What is the final application that you are developing?

Regards,

Mario