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

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;