74hc595驱动八位数码管程序
单片机源程序如下:
- #include "sys.h"
- #include "delay.h"
- #include "SMG.h"
- #include "usart.h"
- #include "timer.h"
- #include "led.h"
- #include "beep.h"
- int main(void)
- {
- u32 counter_number=99999999;
- u16 i=0;
- HAL_Init(); //初始化HAL库
- Stm32_Clock_Init(336,8,2,7); //设置时钟,168Mhz
- delay_init(168); //初始化延时函数
- SMG_Init(); //初始化数码管函数
- uart_init(115200); //初始化USART
- TIM3_Init(10000-1,8400-1); //定时器3初始化,定时器时钟为84M,分频系数为8400-1,
- LED_Init(); //所以定时器3的频率为84M/8400=10K,自动重装载为10000-1,那么定时器周期就是1s
- BEEP_Init();
-
- while(1)
- {
- DIV_number(counter_number);
- SMG_Disp(Disp_Code);
- i++;
- if(i==10)
- {
- counter_number--;
- i=0;
- if(counter_number==-1)
- {
- counter_number=999999999;
- }
- }
- //SMG_Disp(Disp_Code);
- }
-
- }
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数码管实验(动态显示).7z
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