view Small_CPU/Inc/system_stm32f4xx.h @ 623:ba83a8ef9bad

Improvment frame Handling: In previous version, especially during fast menu operations, from time to time a flicker (in case of cyclic updated views) or corrupted menus appeared. Possible root cause is a interferance in the chain: refresh display (~100ms) => release frame (in parallel to) provide frame (~45ms) => clear frame (~45ms). to improve the behaviour the clear frame loop is not iterated until all bufferes are cleared (before one buffer every~45ms). getFrame() does now iterate through all frame buffers instead reusing the first possible (to avoid ghoust views and to provide more time to housekeeping function for cleanup)
author Ideenmodellierer
date Sun, 07 Feb 2021 22:04:43 +0100
parents 5f11787b4f42
children
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/**
  ******************************************************************************
  * @file    system_stm32f4xx.h
  * @author  MCD Application Team
  * @version V1.0.0
  * @date    30-September-2011
  * @brief   CMSIS Cortex-M4 Device System Source File for STM32F4xx devices.  
  ******************************************************************************  
  * @attention
  *
  * THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
  * WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE
  * TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY
  * DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING
  * FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE
  * CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
  *
  * <h2><center>&copy; COPYRIGHT 2011 STMicroelectronics</center></h2>
  ******************************************************************************  
  */ 

/** @addtogroup CMSIS
  * @{
  */

/** @addtogroup stm32f4xx_system
  * @{
  */  
  
/**
  * @brief Define to prevent recursive inclusion
  */
#ifndef SYSTEM_STM32F4XX_H
#define SYSTEM_STM32F4XX_H

#ifdef __cplusplus
 extern "C" {
#endif 

/** @addtogroup STM32F4xx_System_Includes
  * @{
  */

/**
  * @}
  */


/** @addtogroup STM32F4xx_System_Exported_types
  * @{
  */

extern uint32_t SystemCoreClock;          /*!< System Clock Frequency (Core Clock) */


/**
  * @}
  */

/** @addtogroup STM32F4xx_System_Exported_Constants
  * @{
  */

/**
  * @}
  */

/** @addtogroup STM32F4xx_System_Exported_Macros
  * @{
  */

/**
  * @}
  */

/** @addtogroup STM32F4xx_System_Exported_Functions
  * @{
  */
  
extern void SystemInit(void);
extern void SystemCoreClockUpdate(void);
/**
  * @}
  */

#ifdef __cplusplus
}
#endif

#endif /* SYSTEM_STM32F4XX_H */

/**
  * @}
  */
  
/**
  * @}
  */  
/******************* (C) COPYRIGHT 2011 STMicroelectronics *****END OF FILE****/