基础版本

2026-04-27 16:55:02 +08:00
commit 64b3e488da
269 changed files with 383851 additions and 0 deletions
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+#include "config.h"	 	//全局声明
+ 
+void delay_init(void) 
+{
+  SysTick_CLKSourceConfig(SysTick_CLKSource_HCLK_Div8);//用于配置延时函数
+}
+//延时函数：毫秒级别
+void delay_ms(uint32_t nms)
+{
+	uint32_t tmp;
+	while(nms--)
+	{
+		SysTick->LOAD = 168000000/8/1000;	//计数初值，延时1ms
+		SysTick->VAL = 0;					//清空当前值
+		SysTick->CTRL |= 0x1;				//开始计数
+		while ((SysTick->CTRL & 0x00010000)==0);
+ 
+		SysTick->VAL = 0;					//清空当前值
+		SysTick->CTRL &= 0;					//关闭计数
+	}
+}
+ 
+//延时函数：微秒级别
+void delay_us(uint32_t nus)
+{
+	uint32_t tmp;
+	while(nus--)
+	{
+		SysTick->LOAD = 168000000/8/1000000;	//计数初值，延时1us
+		SysTick->VAL = 0;					//清空当前值
+		SysTick->CTRL |= 0x1;				//开始计数
+	  while ((SysTick->CTRL & 0x00010000)==0);
+		SysTick->VAL = 0;					//清空当前值
+		SysTick->CTRL &= 0;					//关闭计数
+	}
+ 
+}
+ 
+