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LPC55S69 : read FFR at 150Mhz

Question asked by Eugene Hiihtaja on Jul 3, 2020
Latest reply on Jul 19, 2020 by ZhangJennie

Hello !

 

Do I undestand right and FFR API have 96Mhz limitation ?

 

I try to read AC code from it at Core clock 150Mhz and it freeze at some point in this code :

 

FLASH_Init(&flashInstance);
FFR_Init(&flashInstance);

 

 

/* Read AC. */
memset((void*) activationCode, 0, sizeof(activationCode));
result = FFR_KeystoreGetAC(&flashInstance, (uint8_t*) activationCode);

 

I can see FLASH_Init have this line :

config->modeConfig.sysFreqInMHz = (uint32_t)kSysToFlashFreq_defaultInMHz; // 96 Mhz

 

But may be it is common case for Write and Erase as well.

Can flash memory reading via FFR api can be done at 150Mhz if I initialize FLASH_Init

with modified clock 150Mhz ?

 

Or I can read AC area directly becouse address of it is known. I think I should use FFR API

for have compatibility with next versions.

 

Regards,

Eugene

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