Do delay time requried to read d flash data at start up after reset?

rubykrishna — Tue, 01 Nov 2016 09:37:47 GMT

Hi,

Im using a MC9S12XET256 controller(mc9s12xe family).

i'm reading a particular value from d flash memory. For ex: lets assume the current value in the the address 0x10 _0000 is 23

on start up, i have the following piece of code

_startup()

{

clockinit()

flashinit()

main()

}

void main()

{

temp= *(NVM_Reprogramming * __far)0x100000;

}

i found that value is not read properly

When i inject a random delay, it is read properly.

_startup()

{

main()

}

void main()

{

uint16 i=0;

while(i<10000)

{

i++;

}

temp= *(NVM_Reprogramming * __far)0x100000;

}

Its reading value 23 correctly.

Is any delay required to read dflash data from memory? after reset ?

Though controller supported emulated eeprom we didnt opt for it?

Did anybody faced such hissues earlier?

Re: Do delay time requried to read d flash data at start up after reset?

RadekS — Wed, 02 Nov 2016 16:32:13 GMT

Hi Ruby,

It seems that content of your question is almost the same as your next thread at https://community.nxp.com/thread/437990

We may continue in a discussion there.

I hope it helps you.

Have a great day,
Radek

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topic Do delay time requried to read d flash data at start up after reset? in S12 / MagniV Microcontrollers

Do delay time requried to read d flash data at start up after reset?

Re: Do delay time requried to read d flash data at start up after reset?