/**
* @brief Activates the Over-Drive mode.
* @note This mode allows the CPU and the core logic to operate at a higher frequency
* than the normal mode for a given voltage scaling (scale 1, scale 2 or scale 3).
* @note It is recommended to enter or exit Over-drive mode when the application is not running
* critical tasks and when the system clock source is either HSI or HSE.
* During the Over-drive switch activation, no peripheral clocks should be enabled.
* The peripheral clocks must be enabled once the Over-drive mode is activated.
* @retval HAL status
*/
HAL_StatusTypeDef HAL_PWREx_EnableOverDrive(void)
{
uint32_t tickstart = 0;
__HAL_RCC_PWR_CLK_ENABLE();
/* Enable the Over-drive to extend the clock frequency to 216 MHz */
__HAL_PWR_OVERDRIVE_ENABLE();
/* Get tick */
tickstart = HAL_GetTick();
while(!__HAL_PWR_GET_FLAG(PWR_FLAG_ODRDY))
{
if((HAL_GetTick() - tickstart ) > PWR_OVERDRIVE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
/* Enable the Over-drive switch */
__HAL_PWR_OVERDRIVESWITCHING_ENABLE();
/* Get tick */
tickstart = HAL_GetTick();
while(!__HAL_PWR_GET_FLAG(PWR_FLAG_ODSWRDY))
{
if((HAL_GetTick() - tickstart ) > PWR_OVERDRIVE_TIMEOUT_VALUE)
{
return HAL_TIMEOUT;
}
}
return HAL_OK;
}
/**
* @brief Activates the Over-Drive mode.
* @note These macros can be used only for STM32F42xx/STM32F43xx devices.
* This mode allows the CPU and the core logic to operate at a higher frequency
* than the normal mode for a given voltage scaling (scale 1, scale 2 or scale 3).
* @note It is recommended to enter or exit Over-drive mode when the application is not running
* critical tasks and when the system clock source is either HSI or HSE.
* During the Over-drive switch activation, no peripheral clocks should be enabled.
* The peripheral clocks must be enabled once the Over-drive mode is activated.
* @param None
* @retval HAL status
*/
HAL_StatusTypeDef HAL_PWREx_ActivateOverDrive(void)
{
uint32_t timeout = 0;
__PWR_CLK_ENABLE();
/* Enable the Over-drive to extend the clock frequency to 180 Mhz */
__HAL_PWR_OVERDRIVE_ENABLE();
/* Get timeout */
timeout = HAL_GetTick() + PWR_OVERDRIVE_TIMEOUT_VALUE;
while(!__HAL_PWR_GET_FLAG(PWR_FLAG_ODRDY))
{
if(HAL_GetTick() >= timeout)
{
return HAL_TIMEOUT;
}
}
/* Enable the Over-drive switch */
__HAL_PWR_OVERDRIVESWITCHING_ENABLE();
/* Get timeout */
timeout = HAL_GetTick() + PWR_OVERDRIVE_TIMEOUT_VALUE;
while(!__HAL_PWR_GET_FLAG(PWR_FLAG_ODSWRDY))
{
if(HAL_GetTick() >= timeout)
{
return HAL_TIMEOUT;
}
}
return HAL_OK;
}
