/* 修改后的MatrixLED.h */ #ifndef __MATRIX_LED_H__ #define __MATRIX_LED_H__ #include <REGX52.H> void MatrixLED_Init(); void MatrixLED_SC(unsigned char lie, unsigned char hang); void Timer0_Init(); extern volatile unsigned char Offset; // 声明全局变量 extern volatile unsigned char speed_threshold; #endif /* 修改后的MatrixLED.c */ #include "MatrixLED.h" #include "Delay.h" sbit SER = P3^4; sbit RCK = P3^5; sbit SCK = P3^6; #define MATRIX_LED_PORT P0 volatile unsigned char Offset = 0; volatile unsigned char speed_threshold = 10; void _74595_WByte(unsigned char Byte) { /* 原有实现不变 */ } void MatrixLED_Init() { SCK = 0; RCK = 0; Timer0_Init(); // 新增定时器初始化 } void Timer0_Init() { TMOD &= 0xF0; TMOD |= 0x01; TH0 = 0xFC; TL0 = 0x66; // 1ms定时 ET0 = 1; EA = 1; TR0 = 1; } void MatrixLED_SC(unsigned char lie, unsigned char Data) { _74595_WByte(Data); MATRIX_LED_PORT = ~(0x80 >> lie); Delay(1); MATRIX_LED_PORT = 0xFF; } /* 新增定时器中断服务函数 */ void Timer0_ISR() interrupt 1 { static unsigned int count = 0; TH0 = 0xFC; // 重装初值 TL0 = 0x66; if(++count >= speed_threshold) { count = 0; Offset++; if(Offset > 40) Offset = 0; } } /* 修改后的main.c */ #include <REGX52.H> #include "Delay.h" #include "MatrixLED.h" unsigned char code Animation[] = {/* 原有动画数据不变 */}; void main() { unsigned char i; unsigned char key_state = 1; MatrixLED_Init(); while(1) { // 按键检测（假设接在P3.2） if(P3_2 != key_state) { Delay(20); // 消抖 if(P3_2 != key_state) { key_state = P3_2; speed_threshold = (key_state == 0) ? 5 : 10; } } // 刷新显示 for(i=0; i<8; i++) { MatrixLED_SC(i, Animation[i + Offset]); } } } 把这里面的初始速度和加速后的速度改小一些