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boardloader: enable PVD programmable voltage detector and interrupt

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mcudev 2017-10-22 11:44:06 -04:00 committed by Pavol Rusnak
parent f93316bebd
commit b1eea5a434
1 changed files with 13 additions and 0 deletions
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13
embed/boardloader/lowlevel.c
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@ -64,6 +64,19 @@ void periph_init(void)
__HAL_RCC_GPIOC_CLK_ENABLE();
__HAL_RCC_GPIOD_CLK_ENABLE();
// enable the PVD (programmable voltage detector).
// select the "2.7V" threshold (level 5). the typical electrical
// characteristic values are similar to BOR level 3.
// this detector will be active regardless of the
// flash option byte BOR setting.
__HAL_RCC_PWR_CLK_ENABLE();
PWR_PVDTypeDef pvd_config;
pvd_config.PVDLevel = PWR_PVDLEVEL_5;
pvd_config.Mode = PWR_PVD_MODE_IT_RISING_FALLING;
HAL_PWR_ConfigPVD(&pvd_config);
HAL_PWR_EnablePVD();
NVIC_EnableIRQ(PVD_IRQn);
// Clear the reset flags
PWR->CR |= PWR_CR_CSBF;
RCC->CSR |= RCC_CSR_RMVF;