/* ChibiOS - Copyright (C) 2006..2015 Giovanni Di Sirio Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with the License. You may obtain a copy of the License at http://www.apache.org/licenses/LICENSE-2.0 Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the specific language governing permissions and limitations under the License. */ /** * @file STM32F1xx/stm32_rcc.h * @brief RCC helper driver header. * @note This file requires definitions from the ST header file * @p stm32f10x.h. * * @addtogroup STM32F1xx_RCC * @{ */ #ifndef _STM32_RCC_ #define _STM32_RCC_ /*===========================================================================*/ /* Driver constants. */ /*===========================================================================*/ /*===========================================================================*/ /* Driver pre-compile time settings. */ /*===========================================================================*/ /*===========================================================================*/ /* Derived constants and error checks. */ /*===========================================================================*/ /*===========================================================================*/ /* Driver data structures and types. */ /*===========================================================================*/ /*===========================================================================*/ /* Driver macros. */ /*===========================================================================*/ /** * @name Generic RCC operations * @{ */ /** * @brief Enables the clock of one or more peripheral on the APB1 bus. * @note The @p lp parameter is ignored in this family. * * @param[in] mask APB1 peripherals mask * @param[in] lp low power enable flag * * @api */ #define rccEnableAPB1(mask, lp) { \ RCC->APB1ENR |= (mask); \ } /** * @brief Disables the clock of one or more peripheral on the APB1 bus. * @note The @p lp parameter is ignored in this family. * * @param[in] mask APB1 peripherals mask * @param[in] lp low power enable flag * * @api */ #define rccDisableAPB1(mask, lp) { \ RCC->APB1ENR &= ~(mask); \ } /** * @brief Resets one or more peripheral on the APB1 bus. * * @param[in] mask APB1 peripherals mask * * @api */ #define rccResetAPB1(mask) { \ RCC->APB1RSTR |= (mask); \ RCC->APB1RSTR = 0; \ } /** * @brief Enables the clock of one or more peripheral on the APB2 bus. * @note The @p lp parameter is ignored in this family. * * @param[in] mask APB2 peripherals mask * @param[in] lp low power enable flag * * @api */ #define rccEnableAPB2(mask, lp) { \ RCC->APB2ENR |= (mask); \ } /** * @brief Disables the clock of one or more peripheral on the APB2 bus. * @note The @p lp parameter is ignored in this family. * * @param[in] mask APB2 peripherals mask * @param[in] lp low power enable flag * * @api */ #define rccDisableAPB2(mask, lp) { \ RCC->APB2ENR &= ~(mask); \ } /** * @brief Resets one or more peripheral on the APB2 bus. * * @param[in] mask APB2 peripherals mask * * @api */ #define rccResetAPB2(mask) { \ RCC->APB2RSTR |= (mask); \ RCC->APB2RSTR = 0; \ } /** * @brief Enables the clock of one or more peripheral on the AHB bus. * @note The @p lp parameter is ignored in this family. * * @param[in] mask AHB peripherals mask * @param[in] lp low power enable flag * * @api */ #define rccEnableAHB(mask, lp) { \ RCC->AHBENR |= (mask); \ } /** * @brief Disables the clock of one or more peripheral on the AHB bus. * @note The @p lp parameter is ignored in this family. * * @param[in] mask AHB peripherals mask * @param[in] lp low power enable flag * * @api */ #define rccDisableAHB(mask, lp) { \ RCC->AHBENR &= ~(mask); \ } /** * @brief Resets one or more peripheral on the AHB bus. * * @param[in] mask AHB peripherals mask * * @api */ #define rccResetAHB(mask) { \ RCC->AHBRSTR |= (mask); \ RCC->AHBRSTR = 0; \ } /** @} */ /** * @name ADC peripherals specific RCC operations * @{ */ /** * @brief Enables the ADC1 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableADC1(lp) rccEnableAPB2(RCC_APB2ENR_ADC1EN, lp) /** * @brief Disables the ADC1 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableADC1(lp) rccDisableAPB2(RCC_APB2ENR_ADC1EN, lp) /** * @brief Resets the ADC1 peripheral. * * @api */ #define rccResetADC1() rccResetAPB2(RCC_APB2RSTR_ADC1RST) /** @} */ /** * @name DAC peripheral specific RCC operations * @{ */ /** * @brief Enables the DAC1 peripheral clock. * * @param[in] lp low power enable flag * * @api */ #define rccEnableDAC1(lp) rccEnableAPB1(RCC_APB1ENR_DACEN, lp) /** * @brief Disables the DAC1 peripheral clock. * * @param[in] lp low power enable flag * * @api */ #define rccDisableDAC1(lp) rccDisableAPB1(RCC_APB1ENR_DACEN, lp) /** * @brief Resets the DAC1 peripheral. * * @api */ #define rccResetDAC1() rccResetAPB1(RCC_APB1RSTR_DACRST) /** @} */ /** * @name Backup domain interface specific RCC operations * @{ */ /** * @brief Enables the BKP interface clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableBKPInterface(lp) rccEnableAPB1((RCC_APB1ENR_BKPEN), lp) /** * @brief Disables BKP interface clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableBKPInterface(lp) rccDisableAPB1((RCC_APB1ENR_BKPEN), lp) /** * @brief Resets the Backup Domain interface. * * @api */ #define rccResetBKPInterface() rccResetAPB1(RCC_APB1ENR_BKPRST) /** * @brief Resets the entire Backup Domain. * * @api */ #define rccResetBKP() (RCC->BDCR |= RCC_BDCR_BDRST) /** @} */ /** * @name PWR interface specific RCC operations * @{ */ /** * @brief Enables the PWR interface clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnablePWRInterface(lp) rccEnableAPB1(RCC_APB1ENR_PWREN, lp) /** * @brief Disables PWR interface clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisablePWRInterface(lp) rccDisableAPB1(RCC_APB1ENR_PWREN, lp) /** * @brief Resets the PWR interface. * * @api */ #define rccResetPWRInterface() rccResetAPB1(RCC_APB1RSTR_PWRRST) /** @} */ /** * @name CAN peripherals specific RCC operations * @{ */ /** * @brief Enables the CAN1 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableCAN1(lp) rccEnableAPB1(RCC_APB1ENR_CAN1EN, lp) /** * @brief Disables the CAN1 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableCAN1(lp) rccDisableAPB1(RCC_APB1ENR_CAN1EN, lp) /** * @brief Resets the CAN1 peripheral. * * @api */ #define rccResetCAN1() rccResetAPB1(RCC_APB1RSTR_CAN1RST) /** * @brief Enables the CAN2 peripheral clock. * * @param[in] lp low power enable flag * * @api */ #define rccEnableCAN2(lp) rccEnableAPB1(RCC_APB1ENR_CAN2EN, lp) /** * @brief Disables the CAN2 peripheral clock. * * @param[in] lp low power enable flag * * @api */ #define rccDisableCAN2(lp) rccDisableAPB1(RCC_APB1ENR_CAN2EN, lp) /** * @brief Resets the CAN2 peripheral. * * @api */ #define rccResetCAN2() rccResetAPB1(RCC_APB1RSTR_CAN2RST) /** @} */ /** * @name DMA peripherals specific RCC operations * @{ */ /** * @brief Enables the DMA1 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableDMA1(lp) rccEnableAHB(RCC_AHBENR_DMA1EN, lp) /** * @brief Disables the DMA1 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableDMA1(lp) rccDisableAHB(RCC_AHBENR_DMA1EN, lp) /** * @brief Resets the DMA1 peripheral. * @note Not supported in this family, does nothing. * * @api */ #define rccResetDMA1() /** * @brief Enables the DMA2 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableDMA2(lp) rccEnableAHB(RCC_AHBENR_DMA2EN, lp) /** * @brief Disables the DMA2 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableDMA2(lp) rccDisableAHB(RCC_AHBENR_DMA2EN, lp) /** * @brief Resets the DMA1 peripheral. * @note Not supported in this family, does nothing. * * @api */ #define rccResetDMA2() /** @} */ /** * @name ETH peripheral specific RCC operations * @{ */ /** * @brief Enables the ETH peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableETH(lp) rccEnableAHB(RCC_AHBENR_ETHMACEN | \ RCC_AHBENR_ETHMACTXEN | \ RCC_AHBENR_ETHMACRXEN, lp) /** * @brief Disables the ETH peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableETH(lp) rccDisableAHB(RCC_AHBENR_ETHMACEN | \ RCC_AHBENR_ETHMACTXEN | \ RCC_AHBENR_ETHMACRXEN, lp) /** * @brief Resets the ETH peripheral. * * @api */ #define rccResetETH() rccResetAHB(RCC_AHBRSTR_ETHMACRST) /** @} */ /** * @name I2C peripherals specific RCC operations * @{ */ /** * @brief Enables the I2C1 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableI2C1(lp) rccEnableAPB1(RCC_APB1ENR_I2C1EN, lp) /** * @brief Disables the I2C1 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableI2C1(lp) rccDisableAPB1(RCC_APB1ENR_I2C1EN, lp) /** * @brief Resets the I2C1 peripheral. * * @api */ #define rccResetI2C1() rccResetAPB1(RCC_APB1RSTR_I2C1RST) /** * @brief Enables the I2C2 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableI2C2(lp) rccEnableAPB1(RCC_APB1ENR_I2C2EN, lp) /** * @brief Disables the I2C2 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableI2C2(lp) rccDisableAPB1(RCC_APB1ENR_I2C2EN, lp) /** * @brief Resets the I2C2 peripheral. * * @api */ #define rccResetI2C2() rccResetAPB1(RCC_APB1RSTR_I2C2RST) /** @} */ /** * @name OTG peripherals specific RCC operations * @{ */ /** * @brief Enables the OTG_FS peripheral clock. * * @param[in] lp low power enable flag * * @api */ #define rccEnableOTG_FS(lp) rccEnableAHB(RCC_AHBENR_OTGFSEN, lp) /** * @brief Disables the OTG_FS peripheral clock. * * @param[in] lp low power enable flag * * @api */ #define rccDisableOTG_FS(lp) rccDisableAHB(RCC_AHBENR_OTGFSEN, lp) /** * @brief Resets the OTG_FS peripheral. * * @api */ #define rccResetOTG_FS() rccResetAHB(RCC_AHBRSTR_OTGFSRST) /** @} */ /** * @name SDIO peripheral specific RCC operations * @{ */ /** * @brief Enables the SDIO peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableSDIO(lp) rccEnableAHB(RCC_AHBENR_SDIOEN, lp) /** * @brief Disables the SDIO peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableSDIO(lp) rccDisableAHB(RCC_AHBENR_SDIOEN, lp) /** * @brief Resets the SDIO peripheral. * @note Not supported in this family, does nothing. * * @api */ #define rccResetSDIO() /** @} */ /** * @name SPI peripherals specific RCC operations * @{ */ /** * @brief Enables the SPI1 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableSPI1(lp) rccEnableAPB2(RCC_APB2ENR_SPI1EN, lp) /** * @brief Disables the SPI1 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableSPI1(lp) rccDisableAPB2(RCC_APB2ENR_SPI1EN, lp) /** * @brief Resets the SPI1 peripheral. * * @api */ #define rccResetSPI1() rccResetAPB2(RCC_APB2RSTR_SPI1RST) /** * @brief Enables the SPI2 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableSPI2(lp) rccEnableAPB1(RCC_APB1ENR_SPI2EN, lp) /** * @brief Disables the SPI2 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableSPI2(lp) rccDisableAPB1(RCC_APB1ENR_SPI2EN, lp) /** * @brief Resets the SPI2 peripheral. * * @api */ #define rccResetSPI2() rccResetAPB1(RCC_APB1RSTR_SPI2RST) /** * @brief Enables the SPI3 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableSPI3(lp) rccEnableAPB1(RCC_APB1ENR_SPI3EN, lp) /** * @brief Disables the SPI3 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableSPI3(lp) rccDisableAPB1(RCC_APB1ENR_SPI3EN, lp) /** * @brief Resets the SPI3 peripheral. * * @api */ #define rccResetSPI3() rccResetAPB1(RCC_APB1RSTR_SPI3RST) /** @} */ /** * @name TIM peripherals specific RCC operations * @{ */ /** * @brief Enables the TIM1 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableTIM1(lp) rccEnableAPB2(RCC_APB2ENR_TIM1EN, lp) /** * @brief Disables the TIM1 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableTIM1(lp) rccDisableAPB2(RCC_APB2ENR_TIM1EN, lp) /** * @brief Resets the TIM1 peripheral. * * @api */ #define rccResetTIM1() rccResetAPB2(RCC_APB2RSTR_TIM1RST) /** * @brief Enables the TIM2 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableTIM2(lp) rccEnableAPB1(RCC_APB1ENR_TIM2EN, lp) /** * @brief Disables the TIM2 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableTIM2(lp) rccDisableAPB1(RCC_APB1ENR_TIM2EN, lp) /** * @brief Resets the TIM2 peripheral. * * @api */ #define rccResetTIM2() rccResetAPB1(RCC_APB1RSTR_TIM2RST) /** * @brief Enables the TIM3 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableTIM3(lp) rccEnableAPB1(RCC_APB1ENR_TIM3EN, lp) /** * @brief Disables the TIM3 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableTIM3(lp) rccDisableAPB1(RCC_APB1ENR_TIM3EN, lp) /** * @brief Resets the TIM3 peripheral. * * @api */ #define rccResetTIM3() rccResetAPB1(RCC_APB1RSTR_TIM3RST) /** * @brief Enables the TIM4 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableTIM4(lp) rccEnableAPB1(RCC_APB1ENR_TIM4EN, lp) /** * @brief Disables the TIM4 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableTIM4(lp) rccDisableAPB1(RCC_APB1ENR_TIM4EN, lp) /** * @brief Resets the TIM4 peripheral. * * @api */ #define rccResetTIM4() rccResetAPB1(RCC_APB1RSTR_TIM4RST) /** * @brief Enables the TIM5 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableTIM5(lp) rccEnableAPB1(RCC_APB1ENR_TIM5EN, lp) /** * @brief Disables the TIM5 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableTIM5(lp) rccDisableAPB1(RCC_APB1ENR_TIM5EN, lp) /** * @brief Resets the TIM5 peripheral. * * @api */ #define rccResetTIM5() rccResetAPB1(RCC_APB1RSTR_TIM5RST) /** * @brief Enables the TIM6 peripheral clock. * * @param[in] lp low power enable flag * * @api */ #define rccEnableTIM6(lp) rccEnableAPB1(RCC_APB1ENR_TIM6EN, lp) /** * @brief Disables the TIM6 peripheral clock. * * @param[in] lp low power enable flag * * @api */ #define rccDisableTIM6(lp) rccDisableAPB1(RCC_APB1ENR_TIM6EN, lp) /** * @brief Resets the TIM6 peripheral. * * @api */ #define rccResetTIM6() rccResetAPB1(RCC_APB1RSTR_TIM6RST) /** * @brief Enables the TIM7 peripheral clock. * * @param[in] lp low power enable flag * * @api */ #define rccEnableTIM7(lp) rccEnableAPB1(RCC_APB1ENR_TIM7EN, lp) /** * @brief Disables the TIM7 peripheral clock. * * @param[in] lp low power enable flag * * @api */ #define rccDisableTIM7(lp) rccDisableAPB1(RCC_APB1ENR_TIM7EN, lp) /** * @brief Resets the TIM7 peripheral. * * @api */ #define rccResetTIM7() rccResetAPB1(RCC_APB1RSTR_TIM7RST) /** * @brief Enables the TIM8 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableTIM8(lp) rccEnableAPB2(RCC_APB2ENR_TIM8EN, lp) /** * @brief Disables the TIM8 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableTIM8(lp) rccDisableAPB2(RCC_APB2ENR_TIM8EN, lp) /** * @brief Resets the TIM8 peripheral. * * @api */ #define rccResetTIM8() rccResetAPB2(RCC_APB2RSTR_TIM8RST) /** @} */ /** * @name USART/UART peripherals specific RCC operations * @{ */ /** * @brief Enables the USART1 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableUSART1(lp) rccEnableAPB2(RCC_APB2ENR_USART1EN, lp) /** * @brief Disables the USART1 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableUSART1(lp) rccDisableAPB2(RCC_APB2ENR_USART1EN, lp) /** * @brief Resets the USART1 peripheral. * * @api */ #define rccResetUSART1() rccResetAPB2(RCC_APB2RSTR_USART1RST) /** * @brief Enables the USART2 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableUSART2(lp) rccEnableAPB1(RCC_APB1ENR_USART2EN, lp) /** * @brief Disables the USART2 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableUSART2(lp) rccDisableAPB1(RCC_APB1ENR_USART2EN, lp) /** * @brief Resets the USART2 peripheral. * * @api */ #define rccResetUSART2() rccResetAPB1(RCC_APB1RSTR_USART2RST) /** * @brief Enables the USART3 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableUSART3(lp) rccEnableAPB1(RCC_APB1ENR_USART3EN, lp) /** * @brief Disables the USART3 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableUSART3(lp) rccDisableAPB1(RCC_APB1ENR_USART3EN, lp) /** * @brief Resets the USART3 peripheral. * * @api */ #define rccResetUSART3() rccResetAPB1(RCC_APB1RSTR_USART3RST) /** * @brief Enables the UART4 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableUART4(lp) rccEnableAPB1(RCC_APB1ENR_UART4EN, lp) /** * @brief Disables the UART4 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableUART4(lp) rccDisableAPB1(RCC_APB1ENR_UART4EN, lp) /** * @brief Resets the UART4 peripheral. * * @api */ #define rccResetUART4() rccResetAPB1(RCC_APB1RSTR_UART4RST) /** * @brief Enables the UART5 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableUART5(lp) rccEnableAPB1(RCC_APB1ENR_UART5EN, lp) /** * @brief Disables the UART5 peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableUART5(lp) rccDisableAPB1(RCC_APB1ENR_UART5EN, lp) /** * @brief Resets the UART5 peripheral. * * @api */ #define rccResetUART5() rccResetAPB1(RCC_APB1RSTR_UART5RST) /** @} */ /** * @name USB peripheral specific RCC operations * @{ */ /** * @brief Enables the USB peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccEnableUSB(lp) rccEnableAPB1(RCC_APB1ENR_USBEN, lp) /** * @brief Disables the USB peripheral clock. * @note The @p lp parameter is ignored in this family. * * @param[in] lp low power enable flag * * @api */ #define rccDisableUSB(lp) rccDisableAPB1(RCC_APB1ENR_USBEN, lp) /** * @brief Resets the USB peripheral. * * @api */ #define rccResetUSB() rccResetAPB1(RCC_APB1RSTR_USBRST) /** @} */ /*===========================================================================*/ /* External declarations. */ /*===========================================================================*/ #ifdef __cplusplus extern "C" { #endif #ifdef __cplusplus } #endif #endif /* _STM32_RCC_ */ /** @} */