79 lines
2.9 KiB
C++
79 lines
2.9 KiB
C++
/*
|
|
ChibiOS - Copyright (C) 2006..2021 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 RCCv1/stm32_lsi.inc
|
|
* @brief Shared LSI clock handler.
|
|
*
|
|
* @addtogroup STM32_LSI_HANDLER
|
|
* @{
|
|
*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local definitions. */
|
|
/*===========================================================================*/
|
|
|
|
/**
|
|
* @brief LSI clock frequency.
|
|
*/
|
|
#define STM32_LSICLK 32000U
|
|
|
|
/*===========================================================================*/
|
|
/* Derived constants and error checks. */
|
|
/*===========================================================================*/
|
|
|
|
/* Registry checks for robustness.*/
|
|
#if !defined(STM32_RCC_HAS_LSI)
|
|
#error "STM32_RCC_HAS_LSI not defined in stm32_registry.h"
|
|
#endif
|
|
|
|
/* Checks on configurations.*/
|
|
#if !defined(STM32_LSI_ENABLED)
|
|
#error "STM32_LSI_ENABLED not defined in mcuconf.h"
|
|
#endif
|
|
|
|
/*===========================================================================*/
|
|
/* Driver exported variables. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local variables. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver local functions. */
|
|
/*===========================================================================*/
|
|
|
|
__STATIC_FORCEINLINE void lsi_init(void) {
|
|
|
|
#if STM32_LSI_ENABLED
|
|
/* LSI activation.*/
|
|
RCC->RDLSICR |= RCC_RDLSICR_LSION;
|
|
while ((RCC->RDLSICR & RCC_RDLSICR_LSIRDY) == 0U) {
|
|
}
|
|
#endif
|
|
}
|
|
|
|
/*===========================================================================*/
|
|
/* Driver interrupt handlers. */
|
|
/*===========================================================================*/
|
|
|
|
/*===========================================================================*/
|
|
/* Driver exported functions. */
|
|
/*===========================================================================*/
|
|
|
|
/** @} */
|