基础的直流电机按键调速,需要L298N电机驱动,勿喷
单片机源程序如下:
- #include "led.h"
- #include "delay.h"
- #include "key.h"
- #include "sys.h"
- #include "usart.h"
- #include "timer.h"
-
- //运用L298N电机驱动模块及pwm,按键来调节直流电机转速
-
- int main(void)
- {
- vu8 key=0;
- u16 led0pwmval=500;
- delay_init(); //延时函数初始化
- NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2); //设置NVIC中断分组2:2位抢占优先级,2位响应优先级
- uart_init(115200); //串口初始化为115200
- LED_Init(); //LED端口初始化
- KEY_Init(); //初始化与按键连接的硬件接口
- TIM3_PWM_Init(899,0); //不分频。PWM频率=72000000/900=80Khz
- while(1)
- {
-
- delay_ms(5);
-
- key=KEY_Scan(1); //得到键值
-
- if(key)
- {
- switch(key)
- {
- case WKUP_PRES: //按上键加速
- led0pwmval++;
- break;
-
- case KEY1_PRES: //按下键减速
- led0pwmval--;
- break;
- }
- }
-
- TIM_SetCompare2(TIM3,led0pwmval);
- }
- }
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直流电机按键调速.rar
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