SYSCLK系统时钟可选择为PLL输出、HSI或者HSE，系统时钟最大频率为72MHz，它通过AHB分频器分频后送给各模...
Once the boot mode is selected, the application software can modify the memory accessible in the code area.This modification is performed by programming the MEM_MODE bits in the SYSCFG configuration register 1 (SYSCFG_CFGR1). Unlike Cortex® M3 and M4, the M0 CPU does not support the vec...
(2)main.c #include"gpio_utils.h"#include"stm32f10x.h"#include"sys_tick_utils.h"#include"led_utils.h"#include"usart_utils.h"#include"stdio.h"#include"exti_utils.h"// 主函数intmain(void){GPIO_Configuration();// 调用GPIO配置函数// tick 初始化sys_tick_init(72);led_all_off();NVIC...
3.5、SetSysClock( )函数 在SetSysClock函数中,配置了系统时钟,PLL倍频以及分频系数: /** * @brief Configures the System clock source, PLL Multiplier and Divider factors, * AHB/APBx prescalers and Flash settings * @Note This function should be called only once the RCC clock configuration * is ...
p_info("enter LP_SHUTDOWN mode!\r\n"); HAL_PWREx_EnterSHUTDOWNMode();break; } ExitLowPowerMode(); }/* 程序以WFI指令进入睡眠模式,所以只要产生任意中断都会退出睡眠模式。所以进入睡眠模式前先调? 肏AL_SuspendTick()函数挂起系统滴答定时器,否则将会被系统滴答定时器(SysTick ...
LCKR- Port Configuration Lock Register With all registers exceptCRLandCRH, each bit corresponds to a microcontroller pin. GPIO配置 (1)GPIO_Mode_AIN 模拟输入 (2)GPIO_Mode_IN_FLOATING 浮空输入 (3)GPIO_Mode_IPD 下拉输入 (4)GPIO_Mode_IPU 上拉输入 ...
组件的模式和配置在图3-15的组件列表中单击一个组件后,就会在其右侧显示模式与配置(ModeandConfiguration)界面。这个界面分为上下两个部分,上方是模式设置界面,下方是参数配置界面,这两个界面的显示内容与选择的具体组件有关。例如,图3-15显示的是SystemCore分组里RCC组件的模式和配置界面。RCC用于设置MCU的两个外部...
Here is the SYS debug settings Here is what CubeMX did. My questions is: It's necessary to do those job in main() ? I think the right way is to set up configuration before the program is running. and I right ? Note: this post was migrated and contained many threaded conversations...
②配置System Core选项中的SYS和RCC 在Pinout & Configuration 一栏下展开System Core,分别配置SYS和RCC。 ③Clock Configuration时钟树配置 时钟配置完成后,回到Pinout & Configuration一栏配置其他MCU外设。 ④MCU的串口配置 选择USART1,配置USART1参数。 开启USART1全局中断。
; <h> Stack Configuration ; <o> Stack Size (in Bytes) <0x0-0xFFFFFFFF:8> ; </h> Stack_Size EQU 0x00000400 AREA STACK, NOINIT, READWRITE, ALIGN=3 Stack_Mem SPACE Stack_Size __initial_sp 这段代码的目的是初始化栈空间:开辟一段大小为 0x0000 0400(1KB)的栈空间,其中 ALIGN=3,表示按...