stm32_rcc.h
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/*
ChibiOS/RT - Copyright (C) 2006,2007,2008,2009,2010,
2011,2012 Giovanni Di Sirio.
This file is part of ChibiOS/RT.
ChibiOS/RT is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 3 of the License, or
(at your option) any later version.
ChibiOS/RT is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
---
A special exception to the GPL can be applied should you wish to distribute
a combined work that includes ChibiOS/RT, without being obliged to provide
the source code for any proprietary components. See the file exception.txt
for full details of how and when the exception can be applied.
*/
/**
* @file STM32L1xx/stm32_rcc.h
* @brief RCC helper driver header.
* @note This file requires definitions from the ST header file
* @p stm32l1xx.h.
*
* @addtogroup STM32L1xx_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.
*
* @param[in] mask APB1 peripherals mask
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableAPB1(mask, lp) { \
RCC->APB1ENR |= (mask); \
if (lp) \
RCC->APB1LPENR |= (mask); \
}
/**
* @brief Disables the clock of one or more peripheral on the APB1 bus.
*
* @param[in] mask APB1 peripherals mask
* @param[in] lp low power enable flag
*
* @api
*/
#define rccDisableAPB1(mask, lp) { \
RCC->APB1ENR &= ~(mask); \
if (lp) \
RCC->APB1LPENR &= ~(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.
*
* @param[in] mask APB2 peripherals mask
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableAPB2(mask, lp) { \
RCC->APB2ENR |= (mask); \
if (lp) \
RCC->APB2LPENR |= (mask); \
}
/**
* @brief Disables the clock of one or more peripheral on the APB2 bus.
*
* @param[in] mask APB2 peripherals mask
* @param[in] lp low power enable flag
*
* @api
*/
#define rccDisableAPB2(mask, lp) { \
RCC->APB2ENR &= ~(mask); \
if (lp) \
RCC->APB2LPENR &= ~(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.
*
* @param[in] mask AHB peripherals mask
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableAHB(mask, lp) { \
RCC->AHBENR |= (mask); \
if (lp) \
RCC->AHBLPENR |= (mask); \
}
/**
* @brief Disables the clock of one or more peripheral on the AHB bus.
*
* @param[in] mask AHB peripherals mask
* @param[in] lp low power enable flag
*
* @api
*/
#define rccDisableAHB(mask, lp) { \
RCC->AHBENR &= ~(mask); \
if (lp) \
RCC->AHBLPENR &= ~(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.
*
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableADC1(lp) rccEnableAPB2(RCC_APB2ENR_ADC1EN, lp)
/**
* @brief Disables the ADC1 peripheral clock.
*
* @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 DMA peripheral specific RCC operations
* @{
*/
/**
* @brief Enables the DMA1 peripheral clock.
*
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableDMA1(lp) rccEnableAHB(RCC_AHBENR_DMA1EN, lp)
/**
* @brief Disables the DMA1 peripheral clock.
*
* @param[in] lp low power enable flag
*
* @api
*/
#define rccDisableDMA1(lp) rccDisableAHB(RCC_AHBENR_DMA1EN, lp)
/**
* @brief Resets the DMA1 peripheral.
*
* @api
*/
#define rccResetDMA1() rccResetAHB(RCC_AHBRSTR_DMA1RST)
/** @} */
/**
* @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 I2C peripherals specific RCC operations
* @{
*/
/**
* @brief Enables the I2C1 peripheral clock.
*
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableI2C1(lp) rccEnableAPB1(RCC_APB1ENR_I2C1EN, lp)
/**
* @brief Disables the I2C1 peripheral clock.
*
* @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.
*
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableI2C2(lp) rccEnableAPB1(RCC_APB1ENR_I2C2EN, lp)
/**
* @brief Disables the I2C2 peripheral clock.
*
* @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 SPI peripherals specific RCC operations
* @{
*/
/**
* @brief Enables the SPI1 peripheral clock.
*
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableSPI1(lp) rccEnableAPB2(RCC_APB2ENR_SPI1EN, lp)
/**
* @brief Disables the SPI1 peripheral clock.
*
* @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.
*
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableSPI2(lp) rccEnableAPB1(RCC_APB1ENR_SPI2EN, lp)
/**
* @brief Disables the SPI2 peripheral clock.
*
* @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)
/** @} */
/**
* @name TIM peripherals specific RCC operations
* @{
*/
/**
* @brief Enables the TIM2 peripheral clock.
*
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableTIM2(lp) rccEnableAPB1(RCC_APB1ENR_TIM2EN, lp)
/**
* @brief Disables the TIM2 peripheral clock.
*
* @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.
*
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableTIM3(lp) rccEnableAPB1(RCC_APB1ENR_TIM3EN, lp)
/**
* @brief Disables the TIM3 peripheral clock.
*
* @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.
*
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableTIM4(lp) rccEnableAPB1(RCC_APB1ENR_TIM4EN, lp)
/**
* @brief Disables the TIM4 peripheral clock.
*
* @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)
/** @} */
/**
* @name USART/UART peripherals specific RCC operations
* @{
*/
/**
* @brief Enables the USART1 peripheral clock.
*
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableUSART1(lp) rccEnableAPB2(RCC_APB2ENR_USART1EN, lp)
/**
* @brief Disables the USART1 peripheral clock.
*
* @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.
*
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableUSART2(lp) rccEnableAPB1(RCC_APB1ENR_USART2EN, lp)
/**
* @brief Disables the USART2 peripheral clock.
*
* @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.
*
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableUSART3(lp) rccEnableAPB1(RCC_APB1ENR_USART3EN, lp)
/**
* @brief Disables the USART3 peripheral clock.
*
* @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)
/** @} */
/**
* @name USB peripheral specific RCC operations
* @{
*/
/**
* @brief Enables the USB peripheral clock.
*
* @param[in] lp low power enable flag
*
* @api
*/
#define rccEnableUSB(lp) rccEnableAPB1(RCC_APB1ENR_USBEN, lp)
/**
* @brief Disables the USB peripheral clock.
*
* @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_ */
/** @} */