The running water lamp has realized the left, right, left and right, and pause functions. It still lacks the fast and low speed functions. I don’t know how to add them.

单片机小白啊

The running water lamp has realized the left, right, left and right, and pause functions. It still lacks the fast and low speed functions. I don’t know how to add them. [Copy link]

#include<reg51.h>
sbit key1=P3^0;
sbit key2=P3^1;
unsigned char dat1[8]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f};
unsigned char dat2[ 8]={0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe};
unsigned char dat3[15]={0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f,0xbf,0xdf,0xef ,0xf7,0xfb,0xfd,0xfe};
unsigned char MODE=0,stu=0,num;
void delay(unsigned int x);
void keyscan(void);
void main(void)
{
while(1)
{
keyscan() ;
switch(MODE)
{
case 0:if(stu) {P0=dat1[num];num++;num%=8;}break;
case 1:if(stu) {P0=dat2[num];num++;num% =8;}break;
case 2:if(stu) {P0=dat3[num];num++;num%=15;}break;
}
delay(100);
}
}
void delay(unsigned int x)
{
unsigned int i ,j;
for(i=0;i<x;i++)
{
for(j=0;j<333;j++);
}
}
void keyscan(void)
{
if(key1==0)
{
delay(10);
if(key1==0)
{
MODE++;
MODE%=3;
num=0;
while(key1==0);
}
}
if(key2==0)
{
delay(10);
if(key2==0)
{
stu++;
stu%=2;
while(key2==0);
}
}
}

单片机小白啊

And it can only be controlled with two buttons. I hope you can help me modify it.

爱玛电动车

Isn’t it possible to directly change the delay size to achieve low-speed and fast functions?

Jacktang

If PWM is not used to implement pipelining

If you want to make the running water lamp slower, increase the delay.

vice versa

okhxyyo

You can modify the lighting frequency. From your code, it would be more convenient to adjust the delay directly.

1nnocent

Microcontroller Xiaobai published on 2021-5-18 12:16 and can only be controlled with two buttons. I hope you can help me modify it.

The key point here is that you need to use two buttons to control more than two functions, right?

You can consider long-pressing the buttons to achieve fast and low-speed functions. For example, the right button is fast when long-pressed, and the left button is low-speed when long-pressed. It may be more labor-intensive hahaha

1nnocent

[url=forum.php?mod=redirect&goto=findpost&pid=3063316&ptid=1165931]MCU Xiaobai published on 2021-5-18 12:16[ /url] And it can only be controlled with two buttons. I hope you can help me modify it

You can set a threshold, for example, if the button is not released after one second,

It enters an infinite loop, and the acceleration function is executed in this infinite loop.

The condition for jumping out of this loop is to release the button.

If you press it briefly, it will not enter this cycle and will have no effect on your original functions.