stm32f429igt6 Enable the Over-drive to extend the clock frequency to 180 Mhz

[wang zheng]

Posted on March 07, 2017 at 10:23

/* Enable the Over-drive to extend the clock frequency to 180 Mhz */

PWR->CR |= PWR_CR_ODEN;

while((PWR->CSR & PWR_CSR_ODRDY) == 0)

{

}

PWR->CR |= PWR_CR_ODSWEN;

while((PWR->CSR & PWR_CSR_ODSWRDY) == 0)

{

}

/* Configure Flash prefetch, Instruction cache, Data cache and wait state */

FLASH->ACR = FLASH_ACR_PRFTEN | FLASH_ACR_ICEN |FLASH_ACR_DCEN |FLASH_ACR_LATENCY_5WS;

[Tesla DeLorean]

Posted on March 07, 2017 at 14:28

Ok, and was there a question?

[Nesrine M_O]

Posted on March 07, 2017 at 14:33

Hi

wzawz.wzawz

,

You are not able to

reach

the 180MHz as system clock frequencywhen you activate the Over Drive feature ?

Try to refer to this example :STM32Cube_FW_F4_V1.0\Projects\STM32F429I-Discovery\Examples\RCC\RCC_ClockConfig

-Nesrine-