用STC8G单片机实现用一个按钮控制LED灯的亮度和开关需要有电路图和程序
时间: 2024-05-27 22:14:57 浏览: 23
电路图:
![电路图](https://i.imgur.com/2BwR8Yc.png)
程序:
```c
#include "STC8G.h"
#define LED P3_5
#define BUTTON P3_2
sbit PWMOUT=P3^3;
void Timer0Init()
{
AUXR |= 0x80;
TMOD &= 0xF0;
TL0 = 0x00;
TH0 = 0x4c;
TF0 = 0;
TR0 = 1;
ET0 = 1;
EA = 1;
}
void Timer0Interrupt() interrupt 1
{
static uint16_t pwmCount = 0;
static uint16_t pwmValue = 0;
static uint8_t buttonState = 0;
static uint16_t debounceCount = 0;
pwmCount++;
if (pwmCount == 1000) {
pwmCount = 0;
PWMOUT = (pwmValue > 0);
if (PWMOUT) {
LED = 1;
} else {
LED = 0;
}
}
if (!BUTTON) {
debounceCount++;
if (debounceCount == 500) {
debounceCount = 0;
buttonState = 1;
}
} else {
debounceCount = 0;
if (buttonState) {
buttonState = 0;
pwmValue += 50;
if (pwmValue > 1000) {
pwmValue = 0;
}
}
}
}
void main()
{
PWMOUT = 0;
LED = 0;
BUTTON = 1;
Timer0Init();
while (1) {}
}
```
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