Macros | Functions | Variables
stm32f469/stm32f469i-disco/Src/system_stm32f4xx.c File Reference

CMSIS Cortex-M4 Device Peripheral Access Layer System Source File. More...

#include "stm32f4xx.h"
Include dependency graph for stm32f469/stm32f469i-disco/Src/system_stm32f4xx.c:

Go to the source code of this file.

Macros

#define HSE_VALUE   ((uint32_t)8000000)
 
#define HSI_VALUE   ((uint32_t)16000000)
 
#define VECT_TAB_OFFSET   0x00
 

Functions

void SystemCoreClockUpdate (void)
 Update SystemCoreClock variable according to Clock Register Values. The SystemCoreClock variable contains the core clock (HCLK), it can be used by the user application to setup the SysTick timer or configure other parameters. More...
 
void SystemInit (void)
 Setup the microcontroller system Initialize the FPU setting, vector table location and External memory configuration. More...
 

Variables

const uint8_t AHBPrescTable [16] = {0, 0, 0, 0, 0, 0, 0, 0, 1, 2, 3, 4, 6, 7, 8, 9}
 
const uint8_t APBPrescTable [8] = {0, 0, 0, 0, 1, 2, 3, 4}
 
uint32_t SystemCoreClock = 16000000
 System clock frequency (core clock) More...
 

Detailed Description

CMSIS Cortex-M4 Device Peripheral Access Layer System Source File.

Author
MCD Application Team This file provides two functions and one global variable to be called from user application:
  • SystemInit(): This function is called at startup just after reset and before branch to main program. This call is made inside the "startup_stm32f4xx.s" file.
  • SystemCoreClock variable: Contains the core clock (HCLK), it can be used by the user application to setup the SysTick timer or configure other parameters.
  • SystemCoreClockUpdate(): Updates the variable SystemCoreClock and must be called whenever the core clock is changed during program execution.
Attention

© COPYRIGHT 2017 STMicroelectronics

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

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  3. Neither the name of STMicroelectronics nor the names of its contributors may be used to endorse or promote products derived from this software without specific prior written permission.

THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

Definition in file stm32f469/stm32f469i-disco/Src/system_stm32f4xx.c.



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autogenerated on Fri Apr 1 2022 02:15:03